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View Full Version : Mechanical Fan to Electric Fan Swap (Automatic's) doityourself



WOLFN8TR
09-29-2011, 08:03 PM
.....This Fan Mod is NOT recommended for the M3 cars!.....


- Mechanical Fan to Electric Fan DIY - (http://forum.e46fanatics.com/showthread.php?t=744994)
http://forum.e46fanatics.com/showthread.php?t=744994

I have an auto, and our cars come with a Mechanical Fan (engine driven) as well as an Auxiliary Fan to help with A/C and extra cooling power. I found a couple threads, but no real answers. I finally decided to PM the almighty and infinitely knowledgeable Mr. Nick G @ Technique Tuning, who informed me that it is a direct swap, and he performs this swap on his steptronic cars with no problems. The Mechanical Fan and the Auxiliary Fan have both been removed on my car, and replaced with a single OEM Electric Fan. So far so good. No wiring, no fitment issues, nada. Plops right in, plugs right in, and works.

The electric cooling fan is controlled by the ECM. The ECM uses a remote power output
final stage (mounted on the fan housing). The power output stage receives power from a
50 amp fuse (E46 - located in glove box above the fuse bracket). The electric fan is controlled
by a pulse width modulated signal from the ECM.

The fan is activated based on the ECM calculation (sensing ratio) of:
• Coolant outlet temperature
• Calculated (by the ECM) catalyst temperature
• Vehicle speed
• Battery voltage
• Air Conditioning pressure (calculated by IHKA and sent via the K-Bus to the ECM)

After the initial test has been performed, the fan is brought up to the specified operating
speed. At 10% (sensing ratio) the fan runs at 1/3 speed. At a sensing ratio of between 90-
95% the fan is running at maximum speed. Below 10% or above 95% the fan is stationary.
The sensing ratio is suppressed by a hysteresis function, this prevents speed fluctuation.
When the A/C is switched on, the electric fan is not immediately activated.

It is run from 10 HZ to 100HZ a scope is the best way to see the signal. You can command the fan by creating a signal or using the RIGHT scan tool you can tell what speed you want it to run at and measure the HZ with a scope therfore checking you DME output.

- Direct Link to E46fanatics DIY - (http://e46fanatics.com/forum/showthread.php?t=849735&highlight=)
http://e46fanatics.com/forum/showthread.php?t=849735&highlight


All you need is is this:
Floor jack and one jack stand
Philips screwdriver
Torx E12
8" extension
Ratchet
8mm socket or 8mm wrench
9mm socket
13mm socket
Fan clutch tools
OEM electric fan: 17117561757 & 351038391
Expanding rivets:
51718229003 (4)
51118174185 (as many as your break)
51471919209 (as many as your break)


- Front Bumper Removal DIY - (http://www.e46fanatics.com/howto/howtodetail.php?howto_id=41)
http://www.e46fanatics.com/howto/howtodetail.php?howto_id=41

Car up on ramps is recommended.
- Remove the 8mm bolts holding bumper to the fender liners.
- Take out the reinforcement bolts with 9mm socket/ratchet/extension.
- Unclip wiring for fogs and horn, slide bumper out.
- Take out the top air intake.
- The center duct is held by four pop in screws (these 4 will likely break and need replaced).
- Aux fan is held by four 13mm nuts, take them out.
- Disconnect the aux fan by the fan shroud in the engine bay.
- Slide the fan out
- Put the center duct back in and top air intake.
- Put the front bumper back on in reverse order (slide in, put in the two reinforcement bar bolts and the assorted bolts to the liners).
- Next you have to take the mechanical fan out.
- Pop out the fan control unit on the shroud and the other wiring and put them to the side.
- Take out the 1 torx screw on the passenger side top and loosen up the fan shroud.
- Use the fan clutch tool to loosen the bolt and take out the assembly.
- Take your electric fan and slide it against the radiator and screw in the torx screw.
- Plug the electric fan to the connector where the aux fan was plugged into.
- Place back the control unit and the other wiring to the electric fan shroud.


- E46 Cooling Fans Explained - (http://forum.e46fanatics.com/showthread.php?t=884299)
http://forum.e46fanatics.com/showthread.php?t=884299

A. The MECHANICAL FAN sits naked inside the engine bay and hangs off the engine block. It is always on from the minute you turn the key to start the engine. It stays on all the time until the engine is turned off. It always spin at the same speed coinciding with the belt drive system. It is attached to engine via the water pump and is also connected with the belt drive system. This fan directly cools the engine and is usually quiet. This is the fan that tends to explode from a bad water pump bearing (i.e infamous water pump wobble) or cracked blades. This fan is driven by the belts in the belt drive system which means that this fan will NOT work if the belt drive system pulley components seize up, engine belts break or alternator seizes.

http://i1227.photobucket.com/albums/ee438/WOLFN8TR/BMW/m54_832_zps3454799e.jpg (http://s1227.photobucket.com/user/WOLFN8TR/media/BMW/m54_832_zps3454799e.jpg.html)

The belt drive system also includes as shown in the picture Below the power steering pump (D), idler and tension pulleys (respectively C and B), alternator (I) water pump pulley (A) and AC compressor (F).

http://i1227.photobucket.com/albums/ee438/WOLFN8TR/BMW/BMW_330i_M54-1_zps1edf27bd.jpg (http://s1227.photobucket.com/user/WOLFN8TR/media/BMW/BMW_330i_M54-1_zps1edf27bd.jpg.html)

Although the Mechanical Fan is connected to the same belt drive system that the AC Compressor is connected to the Mechanical Fan has nothing to do with AC coldness or strength. However the reverse is sort of true. When the AC is turned on in the cabin the effect of the AC compressor turning on is rippled thru the belt drive system and will be demonstrated as a momentary roughness in the engine rpm (i.e the rpm needle on the odometer jumps).

B. The AUXILIARY FAN sits in a plastic enclosure outside the engine bay. It is located in front of the radiator right behind the nose panel's kidney grills where it can be seen thru from the outside whiles looking thru the grills at the front of the car.

This fan is usually off for the most part and only turns on for brief intervals at a time to assist in extra cooling during times of high engine load and hot weather engine idle especially during congested summer traffic.

This fan primarily enhances cooling to the radiator zone by pushing cool air into the engine from outside the kidney grills.

http://i1227.photobucket.com/albums/ee438/WOLFN8TR/BMW/IMG_7545-vi-1_zps834d18e8.jpg (http://s1227.photobucket.com/user/WOLFN8TR/media/BMW/IMG_7545-vi-1_zps834d18e8.jpg.html)

Because of its location the Auxiliary Fan does not directly cool the engine block the way the Mechanical Fan does.

The Auxiliary fan when it comes on can be super loud (ie. the infamous UPS/FedEx Truck sound) and annoying.

This fan is not attached to belt drive system and can still work if the belt drive system fails. However, it is an electrical powered fan and depends on the alternator and battery for power.

The Auxiliary fan has absolutely nothing to do with enhancing the AC Compressor or AC coldness/strength as felt inside the cabin. However the reverse is true as when the AC Compressor/AC is on during engine idling this fan will come on only to assist in extra cooling to the radiator and engine bay.

Because the steptronic transmission's cooling lines run to the radiator this fan is thought of to also enhance transmission cooling on steptronic/automatic cars.

http://i1227.photobucket.com/albums/ee438/WOLFN8TR/BMW/IMG_7550-vi-1_zps80528d0c.jpg (http://s1227.photobucket.com/user/WOLFN8TR/media/BMW/IMG_7550-vi-1_zps80528d0c.jpg.html)

C. The ELECTRIC FAN as it relates to the E46 originates ONLY in manual transmission cars (except M3) from 1998 to 2006. The Electric Fan has now also permanently replaced the Mechanical Fan as the sole main engine cooling fan on all modern era BMW cars from 2005/2006 to present.

http://i1227.photobucket.com/albums/ee438/WOLFN8TR/BMW/IMG_7530-vi-1_zpsbb9740be.jpg (http://s1227.photobucket.com/user/WOLFN8TR/media/BMW/IMG_7530-vi-1_zpsbb9740be.jpg.html)

On the E46 this fan sits in a plastic enclosure inside the engine bay between the back of the radiator and empty space in front of the engine. It cannot be seen from outside the car thru the kidney grills and it works to "pull in" cool air from the front of the car into the engine bay. This fan is usually always quiet and on.

The ELECTRICAL FAN, on the manual cars, can be said to replace both the MECHANICAL FAN and AUXILIARY FAN by directly cooling both the radiator and engine bay zones. So one electrical fan in theory will provide the same cooling performance as the Mechanical Fan and Auxiliary Fan.This fan is not attached to belt drive system and can still work if the belt drive system fails. However, it is an electrical powered fan and depends on the alternator and battery for power.

http://i1227.photobucket.com/albums/ee438/WOLFN8TR/BMW/IMG_7556-vi-1_zps60405424.jpg (http://s1227.photobucket.com/user/WOLFN8TR/media/BMW/IMG_7556-vi-1_zps60405424.jpg.html)

NOTE ABOUT THE FAN DELETE MOD: This should really be called the "One for Two Fan replacement mod" because at the end of the mod your steptronic/automatic E46 car will have the exact one Electric Fan set up that the manual cars all have.

When done correctly the Electric Fan has been successfully transplanted to replace both the original Mechanical & Auxiliary Fans on steptronic/automatic E46 vehicles.

It is important to understand that for the Electrical Fan to work properly both the original Mechanical & Auxiliary Fans MUST first be removed, or deleted, from the car.

When said and done the newly installed Electrical Fan will use the same connector that the Auxiliary Fan uses and, because it is mounted on the inside of radiator support frame, the Electrical Fan will sit in the same engine bay space that the Mechanical Fan occupied before the modification.

Although disputable, the swap is said to alleviate the weight burden and parasitic drag* that the Mechanical Fan puts on the the belt drive system and water pump. This lack of weight is said to improve MPGs and add performance in HP. Removal of the Auxiliary Fan is said to make the car run quieter and smoother.

Engine cooling/performance, transmission cooling/performance as well as in cabin AC cooling is not affected in anyway by the removal of the two fans and the swapping in of the one Electrical Fan. *

Said and done, the hard fact remains that the one Electrical Fan actually can replace both the Mechanical Fan and Auxiliary Fan on the steptronic automatic e46 cars.


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Cooling System Maintenance

http://www.e46fanatics.com/forum/showthread.php?t=914109 (http://www.e46fanatics.com/forum/showthread.php?t=914109)

http://forum.e46fanatics.com/showthread.php?t=781087&highlight=digital+temp+gauge (http://forum.e46fanatics.com/showthread.php?t=781087&highlight=digital+temp+gauge)

http://web.archive.org/web/20090417073950/http://www.bmw325i.net/maint_coolant_change.shtml (http://web.archive.org/web/20090417073950/http://www.bmw325i.net/maint_coolant_change.shtml)

http://www.pelicanparts.com/bmw/techarticles/E36-Coolant_Flush/E36-Coolant-Flush.htm (http://www.pelicanparts.com/bmw/techarticles/E36-Coolant_Flush/E36-Coolant-Flush.htm)


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http://img.tapatalk.com/d/13/04/05/4a3yru4e.jpg

BEHR/BOSCH Fan #17-11-7-561-757-M14 and #351038391

- Click on the Vendors below for direct link to order! -

Amazon (http://www.amazon.com/Behr-Service-351038391-Radiator-Condenser/dp/B003NWSNJ2)
Price: $194.00
New-Part.com (http://www.new-part.com/product/bmw-e46-auxiliary-cooling-fan-assembly-suction-oem-behr-17-11-7-561-757)
Price: $204.00
ECSTuning.com (http://www.ecstuning.com/BMW-E46-325Ci-M54_2.5L/Engine/Cooling/ES2568885/)
Price: $242.00
Pelican Parts.com (http://www.pelicanparts.com/cgi-bin/smart/more_info.cgi?pn=17-11-7-561-757-M14&catalog_description=BMW%20OEM%20Part)
Price: $261.00

Water Pump Thread Cap/Nut (http://www.understeer.com/onlinestore-engine.shtml)
Price: $10.00

http://img.tapatalk.com/d/13/03/19/se4yqa6e.jpg
http://img.tapatalk.com/d/13/03/19/2yrydugu.jpg

MECHANICAL vs. ELECTRICAL FAN

http://img.tapatalk.com/d/13/04/05/za5ysu6a.jpg

http://img.tapatalk.com/d/13/04/05/2e5ybyby.jpg

http://img.tapatalk.com/d/13/04/05/ry3arevy.jpg

AUXILLARY FAN INSTALLED
http://img.tapatalk.com/d/13/04/08/heny7uge.jpg

AUXILLARY FAN REMOVED
http://img.tapatalk.com/d/13/04/08/6uqaqa4y.jpg

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- OBDII Digital Engine Temp Gauge with Alarm -

http://forum.e46fanatics.com/showthread.php?t=964491

Doing this Mechanical Fan to Electric Fan swap was worth it in many ways. But I would really like to know exactly what my engine temp is just incase. The question is then what temperature should my engine run at? My temps seem to run consistently between 88-96C (190-205 ) starting to think 95C/203F is really the magic baseline after a bit more research. Around town my car seems to really like 92-95C lately. Currently trying to also figure out what a upper temperature threshold or baseline may be during the Summer outside temps pushing 100F. Have not confirmed upper temps yet, however, 100-105C may be not unusual for the peak Summer temperature? Driving on the freeway in 100 degree weather my car temp is consistently at 192 degrees (89C).

There many options to choose from ranging from $50-$500 depending what you are looking for. I wanted a OBDII Gauge that monitors the cooling temp and sets off a alarm if it gets too high. I liked the Coolant Snitch but it doesn't give a temp reading. Below are a few OBDII gauge monitors ranging in price starting with the lowest. I have the Edge CTS Insight in my Chevy Silverado 2500HD and love it, but it is kinda large for the BMW. So I decided on the UltraGauge which costs approx $70 shipped. So far I really love this little gauge! Here is a link to my review.

http://www.zhpmafia.com/forums/showthread.php?9606-UltraGauge-OBDII-Gauges (http://www.zhpmafia.com/forums/showthread.php?9606-UltraGauge-OBDII-Gauges)



- Ultra Gauge - $70

http://www.ultra-gauge.com/ultragauge/index.htm

http://www.youtube.com/watch?v=Z2b_uvkeLn8&feature=share&list=FLjHGZ0Eo7D 7fYbaP2SssbDg


http://www.youtube.com/watch?v=Z2b_uvkeLn8&list=FLjHGZ0Eo7D7fYbaP2SssbDg& feature=mh_lolz

http://youtu.be/Mo9naImUBmE

http://www.youtube.com/watch?v=Mo9naImUBmE

UltraGauge Features

* Supports all 1996 and newer OBD II compliant gas vehicles***
* Up to 75 selectable Gauges*
* Real time and long term mileage gauges
* Distance-To-Empty Gauge
* Displays 6 selectable gauges at once
* Displays 3 pages of gauges for a total of 18 quickly accessible gauges
* Auto-Page advance, cycles through gauge pages
* Configurable low and high alarms for every gauge
* Audible and Visual Alarms
* Alarms may be individually suspended.
* Displays both current and pending trouble codes
* Clear Check Engine Light and Trouble Codes
* Current and pending Trouble Code Alarms
* Automatic fuel fill-up detection **
* Oil change and Service Gauges
* Trip Gauges
* Health indicator
* Internal temperature sensor that can be monitored and alarmed
* Closed and open loop indicator.
* Large LCD Display
* Display Brightness adjusts automatically to ambient light
* Lightweight easy to route OBD II cable
* Compact and easily mounted with Velcro or optional windshield mount
* Low power
* Retains configuration and accumulated data across power cycles
* Automatically detects and turns off display when vehicle is off
* Comprehensive menu system
* Comprehensive detailed 43 page user manual


http://img.tapatalk.com/d/13/04/16/are5e4e4.jpg

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- CoolantSnitch - $90

http://www.zhpregistry.net/Tech/CoolantSnitch.aspx

http://img.tapatalk.com/d/13/04/16/a7uqyqur.jpg

http://youtu.be/mn6nYTNCuGI


http://www.youtube.com/watch?v=mn6nYTNCuGI&feature=player_embedded
In the video below, the OBC function 7 is unlocked with the coolant temperature readout displayed in degrees C (the digital output just above the ambient temperature display on the dashboard). The electric fan on the car has been disabled, allowing the temperature to rise above normal. At 2:40 the temperature reaches the triggering point of the device.

Background
It is a well documented fact that the E46 generation of BMW 3-series vehicles is prone to a variety of cooling related issues. The frequent occurrence of these issues has forced many enthusiasts to preventively replace nearly all cooling related components at ~60K mile intervals. The true severity of the problem lies in the fact that the engine may overheat without any obvious signals, which ultimately leads to costly repairs.

The E46 Thermostat
Conventional thermostats are very basic devices. They are built to mechanically alter the path of coolant traveling through them depending on the temperature of the coolant. The E46 thermostat, however, is a bit more sophisticated. For the E46 models, BMW uses what is known as a “Characteristic Map Thermostat”. This means that the thermostat is built to allow, to some extent, the DME to alter the open/close temperature range. This approach is used mainly to conserve fuel efficiency. Under partial loads, better fuel economy may be achieved if the coolant temperature is raised up to 110 degrees C. Under heavy loads, this temperature may cause engine knock and, as a result, the DME lowers the opening temperature of the thermostat via an electrical connection, allowing cooler running temperatures. By BMW's specifications, the normal operating range for the engines fitted on the E46 is between 75 - 113 degrees C.

The E46 Temperature Gauge
Ever wonder how is it that the coolant temperature on the E46 dashboard manages to stay at the same mark no matter how hot or cold the ambient temperature is, or how hard you may have been driving the car? This is because the temperature reference on the E46 models is "fake"... well, to some degree (no pun intended!). Because BMW utilizes the Characteristic Map Thermostat described above, the actual coolant temperature may vary by as much as 40 degrees under normal driving conditions. As a result, a true gauge would look somewhat sporadic, which could cause an excessive number of calls to the service department. To eliminate this problem, the gauges on the E46 dashboard have been given some "intelligence". For temperatures up to 75 degrees C, the gauge displays the "real" temperature. When it displays the actual read out, the 1st notch after the blue bar indicates roughly 65 degrees C. When the coolant temperature reaches 75 degrees C, the needle is moves to the upright 12 o'clock position. The needle will remain at this position until the coolant reaches a temrperature of 113 degrees C . At this point the needle will start to move upwards, reaching the 3/4 notch at ~120 degrees C.

While this may seem like a reasonable approach, it has one major downside. If the coolant temperature in the car is rising due to an actual malfunction, the driver has absolutely no indication of this until 113 degrees C is reached. Furthermore, subtle movements of the needle are hard to notice, so if the temperature is climbing quickly, it doesn’t take much time at all to reach the red zone.
CoolantSnitch(tm)

We have been working on a solution to help E46 enthusiasts to save their engines by providing a preemptive warning before the temperatures are too high. Meet project CoolantSnitch(tm). This simple device is built to operate with the existing BMW coolant temperature sensor and provides constant monitoring of the input signal. When the coolant temperature reaches a critical mark of ~117 degress C, CoolantSnitch(tm) will sound an alarm to help the driver identify the problem while the temperature is still within a non-critical range.

CoolantSnitch(tm) is connected to the DME using 3 T-Tap connectors. The 2 connectors supply +12V and Ground, while the 3rd one is connected to the coolant signal line. The device has very high impedance (~1.5 TOhms) which makes is invisible to the DME and causes no interfiereince with the operation of the stock subsystem.

CoolantSnitch has been tested and approved for the following BMW models.
DME VersionModelProduction date.

MS45.1E46 330i/Ci/Cic03/2003 and up
E46 325i/Ci/Cic03/2003 and up
MS43E46 330i/Ci/Cicbefore 03/2003
E46 325i/Ci/Cicbefore 03/2003
E46 330XiAll
E46 325XiAll
MS42E46 323i/Ci/CicAll
E46 328i/CiAll


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- ScanGauge - $170

http://www.scangauge.com/products/scangaugeii/

Advanced, Ultra-compact Vehicle Monitor
ScanGaugeII can help you monitor your vehicle’s most vital systems and provide the kind of real-time information you’ve been missing. Features include more than 15 built-in digital gauges, 5 sets of trip data and an easy-to-use ScanTool that shows both set and pending trouble codes — All in an ultra compact design that installs in minutes.

Exclusive Programmable Gauge System
The ScanGaugeII features the exclusive X-GAUGE™ programmable gauge system; you can monitor parameters such as transmission temperatures†, trip data and fuel economy information. X-Gauge™ gives you the ability to customize your ScanGaugeII by adding additional vehicle specific digital gauges.

All New Performance Monitor
The ScanGaugeII features the all new Performance Monitor™ for real-time performance measurements. The Performance Monitor gives your the ability to track your vehicles performance over short periods of time, distance and acceleration.

Learn to Improve Your Gas Mileage
The US government has put out a report that says driving habits can change fuel-economy by up to 33%. ScanGaugeII provides real-time data about your vehicle’s instant and average fuel economy, fuel used, cost of fuel used for each trip, cost per mile, gallons per hour and more!

Trouble-shoot Your Vehicle
ScanGaugeII can help you diagnose and trouble-shoot problems by providing real-time data about your vehicle’s performance. In addition, ScanGaugeII will display captured trouble codes and conditions when the problem occurred. With the ScanGaugeII you can “pull the codes”, make your own repairs and turn off warning lamps just like the Pros.

Catch Problems Early
ScanGaugeII provides real-time gauges to show you what is going on “under the hood” so you can catch issues early before they become more expensive problems.

Clear Trouble Codes
Data captured when the Trouble Code was set can be recalled to help troubleshoot the problems (was the temperature hot or cold, speed high or low, etc.). The ScanGauge II can be used to clear the trouble codes and data which will turn off the warning lamp.

The ScanGaugeII can check for Diagnostic Trouble Codes (DTCs) and if found, can display how many there are and the Trouble Codes themselves. Using the internet or repair manuals, these can be translated to the failed component and repairs can be made.

Is Your Vehicle Ready for Emissions Testing?
Some states now require that vehicle self tests have been completed since the codes were last cleared, before running emissions checks. The ScanGauge reports this “Readiness”.

Read & Clear Pending Trouble Codes
If no codes where found and your Check Engine light is still on, your vehicle may be storing pending codes. ScanGauge provides a method to force clear any detected or undetected Trouble Codes.


http://img.tapatalk.com/d/13/04/16/u5ujuty7.jpg

http://img.tapatalk.com/d/13/04/16/a4ymapas.jpg

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- Edge Insight CS & CTS - $300 & 400

http://www.edgeproducts.com/products.php?car_motor_key=222&category_key=all

http://youtu.be/SeOsARB3hQo


http://www.youtube.com/watch?v=SeOsARB3hQo&feature=player_embedded

Edge Products presents the new Insight CTS. With unmatched control and style, the all-new Insight CTS offers the most advanced technology in engine monitoring available today. The Insight CTS is compatible with any OBDII-enabled vehicle 1996 and newer.

The Insight CTS offer many of the same great features and benefits users have come to expect from Edge Products, along with a whole host of exciting additional features.

FEATURES
•Available for 1996 and newer vehicles equipped with an OBDII (diagnostic)port
•Full-color, high-resolution, 4.3 inch touch screen
•Displays available SAE data from your vehicle’s computer*
•Data parameters (PIDs) on CTS products will vary by vehicle year, make, and model.
•View parameters in numeric or analog style gauge display
•Digital gauge display/scan tool (does not reprogram/tune the vehicle or add power)
•Compatible with optional EGT pyrometer for engine protection ( view accessories by clicking here)
•Compatible with optional Edge Accessory System (EAS).
•Includes light sensitivity meter to dim screen as ambient light decreases
•Internet updateable (cable included)
•Digital gauge display/scan tool (does not reprogram/tune the vehicle or add power)
•Can be used in conjunction with Edge or other performance products to read vital engine data
•Great Value because it monitors much more than just a typical 3-guage cluster
•Displays and clears Diagnostic Trouble Codes
•Displays Alerts and Records such as RPM, MPH and EGT
•Ships with a universal suction cup mount from Arkon, the leader in device-mounting

Scan Tool
Capture and record even more information about the vehicle’s performance with the Insight’s scan tool feature.
•Displays and clears diagnostic trouble codes with full text description*
•Displays peak values such as speed and RPM*
•Performance testing: 0-60 and quarter-mile times

Bonus Features
•Adjust EFILive™ Tuned PCMS on-the-fly
On 2001-2005 LB7 and LLY Duramax engines you can now change the power levels on-the-fly created by your EFILive™ custom tuning software with your Edge Insight CTS! Simply use your EFILive™ software to change your DSP5 Switch Type from “hard wire” to “serial”. Once you are set up to support “serial” communication, simply use the up and down arrow buttons on your Insight to adjust EFILive™ tunes on-the-fly.
•Displays Fuel Rail Pressure on Duramax Engines
•Displays Diesel Particulate Filter (DPF) Regeneration Status on new diesels with DPF traps

Expandable (items sold separately)
•Compatible with optional Edge Accessory System (EAS) to allow users to connect multiple, additional accessories
•Compatible with optional EGT pyrometer for engine protection

MILEAGE COACH SOFTWARE
The Mileage Coach was designed with fuel economy in mind and features tools to help drivers gauge, monitor, and conserve fuel consumption and MPG.

Features Include:
•Mileage Average, Mileage Instantaneous, and Mileage Coach PIDs*
•Trip Monitor (Monitors fuel cost on trips)
•MPG Calculator
•Fuel Saving Driving Tips including:
oIdling
oWeather
oCruise Control
oCargo/Towing
oExcessive Speed
oETC.

MAINTENANCE MANAGER FEATURES
• Customize a comprehensive list of maintenance items to monitor
• Set up and monitor each selected maintenance item based on user-defined parameters
• Set alerts for advance notification of services that are coming due
• Once it has been indicated that a service has been performed, the Maintenance Manager will automatically reset the next service value.

DATA LOGGING SOFTWARE
Fine tune your runs on the track, or prolong the life of your tow vehicle by identifying out of range parameters. The CS/CTS Data Logging feature can show you crucial data to help you identify the “sweet spots” as well as potential problems on your driving experience. Shaving a few tenths of a second off your race time, or running a few degrees cooler make all the difference. The data logging feature allows for a comprehensive, accurate picture of the vehicle’s condition, such as temperatures, pressures, speed, and more!
• Log and store up to 10 unique logs at a time
• Log hours of data
• View and graph logs on your PC using the new MyStyle Software
• View all parameters or pick which ones you want to view

BACK-UP CAMERA (sold separately)
The Insight CTS features a built-in video port that allows users to connect the state-of-the-art Edge back-up camera, or other compatible video source directly to the CTS unit.

PERFORMANCE TESTING, ALERTS & RECORDS
Performance and records 0-60 and quarter-mile times; quarter-mile MPH; peak engine temperature, RPM, speed and transmission temperature values. Sounds audible alerts when user-defined values are reached and automatically records the highest value of key parameters.

EXPANDABLE (items sold separately)
Compatible with optional Edge Accessory System (EAS) to allow users to connect multiple, additional accessories. View more information on EAS accessories click here.

MYSTYLE™ SOFTWARE (included)
MyStyle™ software that allows users to choose from a variety of Edge custom backgrounds or simply upload an image of your choice. Size, crop and save to your CS or CTS unit for the ultimate in customizability.

kayger12
09-30-2011, 03:44 AM
Interesting.

So my question would be- why would BMW use an engine driven fan and auxiliary fan on autos, if they could have just streamlined it and used the same electric fan in both cars?

Droid X. Forum Runner. Use it.

Hornung418
09-30-2011, 06:32 AM
Transmission related. Some people don't feel it necessary, but the Automatic trans can overheat if not properly cooled. It's really up to you. It will free up a lot of power to the wheels, tho...

johnrando
09-30-2011, 06:49 AM
Awesome Gary, thanks. I'll have to add this to my list.

Hermes
09-30-2011, 01:03 PM
when i REALLY push my car (like when we ran Palomar Mtn a few weeks back), then park and turn it off the aux fan will stay on to cool my tranny for a few minutes. although this is a cool idea I would have to do a 6mt/SMG swap first before I consider it, but i dont know how likely that really is

kayger12
09-30-2011, 01:31 PM
Transmission related. Some people don't feel it necessary, but the Automatic trans can overheat if not properly cooled. It's really up to you. It will free up a lot of power to the wheels, tho...

Makes sense. Thanks Justin.

Droid X. Tapatalk. Use it.

WOLFN8TR
09-30-2011, 09:36 PM
Transmission related. Some people don't feel it necessary, but the Automatic trans can overheat if not properly cooled. It's really up to you. It will free up a lot of power to the wheels, tho...

Exactly...
I did this mod to my 1997 Chevy 4x4. Removed the mechanical POS fan and installed dual 15" Flex A Lite electric fans. It was the best mod I ever did to the truck. I live in the desert and before the truck would overheat at stop lights with the AC on in the summer, afterward I could leave the truck idling all day in the heat and the AC would still blow nice and cool. My gas mileage went up 1.5 mpg also.


Awesome Gary, thanks. I'll have to add this to my list.

Sure thing.
Beings your in Cali I bet this mod would work great, you don't get temps over 105 degrees like we do up here in Vegas.

WOLFN8TR
05-25-2012, 09:43 AM
Bump

johnrando
05-25-2012, 10:00 AM
Thanks for the bump. Was thinking of doing this when I did my VANOS. Hmmm, I see you've done both. We need you here in SoCal wrenching with me. When you coming out next? :)

WOLFN8TR
05-25-2012, 10:07 AM
No Prob...

Bumped for a fellow member who is having issues with his fan. I still need to do this swap. It is on my "To Do List".
I did the Besian Vanos rebuild. Wasn't very hard at all just time consuming. I might be down in SoCal in June, my wife is running the San Diego Rock-N-Roll Marathon. Where do you live?

johnrando
05-25-2012, 10:11 AM
Cool. I thought you already had. I'm up in the South Bay, about 90 minutes north of SD. Casey/Mark/JP Hermes/Bimmeryota (Joe), and others are down in SD.

WOLFN8TR
05-25-2012, 10:16 AM
Hmmm....

Might have to figure something out. I'm coming from Vegas so it's doable. My wife loves California so a trip down is always easy to do. Maybe a mini SIGFest?

johnrando
05-25-2012, 10:21 AM
Always up for that. We have a spare room. Kids bunk up and you can have my oldest's... small, but a queen size bed. We can wrench for a day, then head down to SD for a day. I'd prolly head back up and guessing you'd stay for you wife's event. (or do it some other time).

WOLFN8TR
05-25-2012, 10:28 AM
Sounds Good...
PM Inbound.

johnrando
05-25-2012, 10:33 AM
Charlie (cakm3) is coming here in the June timeframe, as well as Cody (metasin -sp?).

WOLFN8TR
05-25-2012, 10:41 AM
Nice! More the Better.

jayjay_dee
07-12-2012, 12:25 PM
Anybody from the Mafia ever did this(steptronics) ?

I will be refreshing/overhauling my cooling system and Ive been planning this switch for the longest...

I just thought it will be a good combo (cooling refresh + electric fan)...

Anyway, just in case you havent used BMAParts.com, try them, they have the best prices and lightning fast shipping...

Can anybody please confirm if im looking at the correct electric fan from BMAParts.com (http://www.bmaparts.com/item.wws?clientid=bmaparts.com&Sku=902 06034 101&mfr=BOSCH&sup=IMC&)?

Smilez
07-12-2012, 12:28 PM
i'm planning on doing so because my AUX fan is out. :(

WOLFN8TR
07-12-2012, 04:29 PM
It looks the same but not positive. Basically do a search for 2000-2005 with a manual tranny. Here are a few links I have bookmarked.

http://www.pelicanparts.com/cgi-bin/smart/more_info.cgi?pn=17-11-7-561-757-M14&catalog_description=BMW%20OEM%20Part

http://www.ebay.com/itm/130712398258?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1438.l2649#ht_3723wt_948

jayjay_dee
08-03-2012, 01:19 PM
Finally done with this conversion...

My initial impression is my car's a tad peppier now, im actually surprised the first time i stepped on the gas (i havent driven it for almost 3 weeks)

I wrapped up everything 3am this morning (Installed Enco B146, OFHG, Cooling system refresh, and this) so i havent really
driven my car again that much...

If you are in the fence on this one, i would say go ahead and do it, its not too expensive anyway, ~$185 at BMAParts.com

Installation is very easy.

WOLFN8TR
08-06-2012, 05:49 AM
Awesome! Ya it's on my "to do list". Makes sense you would notice a bit more pep. Less drag on the engine. I did the same mod on my old Chevy 4x4 and noticed it right away also. My fuel mileage went up about 1 mpg also.

jayjay_dee
08-06-2012, 12:51 PM
Do it...

Im not expecting my mileage to go up as im driving her harder since the conversion, never fails to put a smile on my face...

gawd, i love my zhp... lol...

WOLFN8TR
11-10-2012, 12:58 PM
Bump. Anyone else do this mod?

Hermes
11-10-2012, 01:59 PM
planning on doing this to all 3 cars, but still have more important projects on deck

WOLFN8TR
01-09-2013, 07:48 PM
BUMP

WOLFN8TR
03-13-2013, 09:02 AM
Anyone else do this yet? I'm gonna pull the trigger and get it done before it gets too hot here.

Here is a link for the fan for $192 and FREE Shipping.
http://www.new-part.com/product/bmw-e46-auxiliary-cooling-fan-assembly-suction-oem-behr-17-11-7-561-757

johnrando
03-13-2013, 09:36 AM
IDK Gary. As hot as things get there, wouldn't 2 fans be better? I once thought I'd do this, but I'm not positive I've heard anything that say absolutely this is a better thing. Until I hear more, I'll likely pass on this. I hope it goes well for you though.

WOLFN8TR
03-13-2013, 11:21 AM
From what I read all the Manuals have the single Electric Cooling Fans. BMW did away with the Mechanical fan in the E46 in 2006. Several guys on E46Fanatics have done this Mod and live in Hot & Humid climates such as Arizona, Texas and Florida. There is a guy that just posted photos of what his mechanical fan did when it came loose on his E46 just before doing this Mod. Ouch...

johnrando
03-13-2013, 01:55 PM
Cool. Let us know how it goes.

Sent from my DROID4 using Tapatalk 2

WOLFN8TR
03-13-2013, 07:23 PM
Found This...

The only big black question mark that was never understood was:

Why did the BMW Steptronic Automatic cars all come with two fans up until around 2006?

The possible answer or best anyone could come up with was the Steptronic Automatic transmission required some extra cooling hence the extra fan.
But the question still begs is why did BMW abandon the fan in 2006 with the advent of the E90 and the E60 M54 engine facelift? Did they realize the extra fan was not required?

Terraphantm a while back found some pertinent information relating the relevance of having a second fan to regulate transmission temperature since M3 cars all have the two fans.

But that discussion was not followed up because candidates doing the swap are not doing it on an M3.

As for M54 engine transmission cooling and long term effects I can't say.

Kpeng is the only member I know whom has driven with this mod in his car the longest and he has driven his car daily for a number of years in the hottest/most humid place in the USA (Florida). Another member has driven for over a year in Phoenix Arizona, the hottest/driest place in the USA, with this mod and had no issues.

Both claim that they had no issue with engine temp or tranny temp in all that time so based on their experiences I don't think it will be an issue for anyone living and driving in cooler regions.

The AC compressor is not driven by the fan but it is driven by the fan belts. In theory the AC compressor should perform slightly better because we are removing about 5+ lbs out of the belt drive system when we remove the mechanical fan.

Said and done the entire DIY is 1000000% reversible if after a couple of days you find your car is going bananas. Even if you can't return/refund your electric fan after changing your mind you can sure sell it on eBay for easily what you paid for it.

Also the DIY pays for itself when you sell your old mechanical fan and aux fan assembly. Both on their own each are easily worth $75 to $100 and carry a high demand.
__________________

johnrando
03-13-2013, 07:27 PM
Yup, that's what I recall reading now. So, not strong evidence that it's a big impact, but every little bit helps. Let us know how it goes.

WOLFN8TR
03-13-2013, 07:31 PM
Will do...

terraphantm
03-16-2013, 02:01 AM
Found This...

The only big black question mark that was never understood was:

Why did the BMW Steptronic Automatic cars all come with two fans up until around 2006?

The possible answer or best anyone could come up with was the Steptronic Automatic transmission required some extra cooling hence the extra fan.
But the question still begs is why did BMW abandon the fan in 2006 with the advent of the E90 and the E60 M54 engine facelift? Did they realize the extra fan was not required?

Terraphantm a while back found some pertinent information relating the relevance of having a second fan to regulate transmission temperature since M3 cars all have the two fans.

But that discussion was not followed up because candidates doing the swap are not doing it on an M3.

As for M54 engine transmission cooling and long term effects I can't say.

Kpeng is the only member I know whom has driven with this mod in his car the longest and he has driven his car daily for a number of years in the hottest/most humid place in the USA (Florida). Another member has driven for over a year in Phoenix Arizona, the hottest/driest place in the USA, with this mod and had no issues.

Both claim that they had no issue with engine temp or tranny temp in all that time so based on their experiences I don't think it will be an issue for anyone living and driving in cooler regions.

The AC compressor is not driven by the fan but it is driven by the fan belts. In theory the AC compressor should perform slightly better because we are removing about 5+ lbs out of the belt drive system when we remove the mechanical fan.

Said and done the entire DIY is 1000000% reversible if after a couple of days you find your car is going bananas. Even if you can't return/refund your electric fan after changing your mind you can sure sell it on eBay for easily what you paid for it.

Also the DIY pays for itself when you sell your old mechanical fan and aux fan assembly. Both on their own each are easily worth $75 to $100 and carry a high demand.
__________________

Newer cars have more powerful fans.

Z4 automatics and Z4Ms have 600W fans. Z4 manuals and E46 non-M manuals have 400W fans. The even newer cars like E90s and E60s have 800W and 1000W fans. Maybe more for some models. Presumably that extra 200W+ eliminates the need for the aux + mechanical fan combo. BMW probably felt the automatics needed the extra capacity because of the transmission cooler.

Realistically, as long as you don't live in an area that reaches extreme temperatures (Saudi, Arizona summers, etc...) you're probably okay with the 400W fan.

Some E83 X3s also had a 600W fan available and its shape is closer to the stock E46 fan. Might be a good alternative for automatic cars (and even S54 cars)

johnrando
03-16-2013, 06:47 AM
That's good info. How many watts are the 2 fans on our cars now? Also, you're saying you can get a mechanical fan from an E83 instead of the one Gary's talking about and it's a direct replace?

WOLFN8TR
03-16-2013, 08:45 AM
Good info...

The one disadvantage of a Mechanical fan is at idle. It only spins as fast as the RPM's of the engine. That's why you always hear the Aux fan kick in. I did this Mod on my old Chevy truck and it was the best upgrade I ever did. One of the biggest reasons I believe this is a good mod is the fact that when the Mechanical fan decides to grenade on you it takes out alot of things with it. I've seen several guys post photos of holes in their hoods, trans coolers, radiators, expansion tanks all destroyed.

I'm shopping around right now for a good price on a quality fan. Once I get one ordered I'm going for it.

BTW- If you read the DIY links for E46 Fanatics several guys that live in Arizona, Florida and Texas have done this Mod years ago with No overheating or tranny issues.

terraphantm
03-16-2013, 09:55 AM
That's good info. How many watts are the 2 fans on our cars now? Also, you're saying you can get a mechanical fan from an E83 instead of the one Gary's talking about and it's a direct replace?

Well watts in this case is referring to power consumption (electricity), so the mech fan isn't assigned such a value. X3 fan is electric. It looks like it would fit physically, but the connector is slightly different. Seems like the connector can be transplanted from the old fan though.

Again, unless you live in an extremely hot climate, it's unnecessary I think.

johnrando
03-16-2013, 10:14 AM
Makes sense, thanks.

Dave1027
03-17-2013, 08:38 AM
Found This...

The only big black question mark that was never understood was:

Why did the BMW Steptronic Automatic cars all come with two fans up until around 2006?

The possible answer or best anyone could come up with was the Steptronic Automatic transmission required some extra cooling hence the extra fan.
But the question still begs is why did BMW abandon the fan in 2006 with the advent of the E90 and the E60 M54 engine facelift? Did they realize the extra fan was not required?
My guess would be that the automatic transmissions add more heat to the radiator so additional cooling is necessary. The E90 probably has a different radiator and enough cooling capacity as is.

WOLFN8TR
03-17-2013, 04:23 PM
7485

WOLFN8TR
04-02-2013, 04:28 AM
Just ordered the BEHR Fan off Amazon, $194 with Free Shipping. Plan on doing it this weekend!

7671
7672

jayjay_dee
04-02-2013, 10:32 AM
Finally, lol...

WOLFN8TR
04-02-2013, 01:01 PM
No Doubt...

Got some Tax money back this year. :thumbup
I should of bought it months ago, the fan prices all went up $10-15 bucks.

UPDATE: First Page Modified!

WOLFN8TR
04-04-2013, 02:29 PM
FedEx just dropped off a box!
Guess what's inside!
http://img.tapatalk.com/d/13/04/05/y6e3y2as.jpg

BEHR Fan!
http://img.tapatalk.com/d/13/04/05/qe7y9yva.jpg

danewilson77
04-04-2013, 03:14 PM
Get to work!

WOLFN8TR
04-04-2013, 05:18 PM
All Done! Just swapped the Mechanical fan with the new BEHR Electric fan. Super easy! I will remove the bumper this weekend and take out the Auxillary fan. The weather is only in the 80's so I should be ok. The car is so quite without that dam Mechanical fan!

7726

7727

7728

jayjay_dee
04-05-2013, 07:44 AM
All Done! Just swapped the Mechanical fan with the new BEHR Electric fan. Super easy! I will remove the bumper this weekend and take out the Auxillary fan. The weather is only in the 80's so I should be ok. The car is so quite without that dam Mechanical fan!


Did you feel any difference in your car?

Also, while your bumper is off, this is the best time to spray paint the lower grills with black if needed...

Dave1027
04-05-2013, 07:45 AM
I wonder if there is a way to leave the front pusher fan in and wire them both in?

WOLFN8TR
04-05-2013, 08:15 AM
Did you feel any difference in your car?

Also, while your bumper is off, this is the best time to spray paint the lower grills with black if needed...


I wonder if there is a way to leave the front pusher fan in and wire them both in?

It's funny you say that. I actually noticed it right away, it felt like when I installed the Sprint Booster.
Thanks for the heads up on the Painting, will do.

I was thinking about wiring up the Aux fan on a switch. The only concern is the load running both at the same time. Thought about wiring it for a backup (just in case) but without it running it is a huge restriction in air flow.

The BEHR fan works really good, I was suprised how much air it moves.

Dave1027
04-05-2013, 08:28 AM
I see you are in Vegas where it gets extremely hot. Please post back how you are doing after the ambiant temp goes over 100. My only concern about this (which I'd like to do) is how well it handles those extreme situations like sitting idling at a stop light on a really hot day.

jayjay_dee
04-05-2013, 08:32 AM
Guys from e46F who originally did this conversion all have positive feedback even during summer season, I read somebody from Arizona and went thru the whole summer fine running just one fan on his e46.... I believe KPeng is from Florida and never reported any issue as well...

WOLFN8TR
04-05-2013, 11:38 AM
Correct. There are several guys in Hot/Humid climates that have done this in Florida, Arizona and Texas. I will keep everyone posted as its starting to get warmer here already.

Also several have seen a increase in gas mileage, anywhere from 1-2 mpg more. I will keep an eye on that as well.

CURRENT
7731

WOLFN8TR
04-06-2013, 11:59 AM
Guy on E46Fanatics just posted this: :facepalm
http://forum.e46fanatics.com/showthread.php?t=744994&page=18

IF YOU HAVE NOT COMPLETED THIS MOD AND STILL HAVE A MECH FAN ON YOUR CAR, SWITCH IT NOW! I PUT THE MOD OFF, NOW THAT MY FAN EXPLOEDED, HERE'S WHAT I AM HAVING TO REPLACE:
1) fan - obvious
2) shroud
3) airbox and snorkel
4) power steering pump pulley
5) radiator
6) exp tank
7) serp belt
8) headlamp washer pump

This does not take into account the dent in the hood and subsequent body work and paint. The engine splash guard had a blade go through it but I think I can reuse this part. I wish I had done this mod before the explosion!

johnrando
04-08-2013, 07:55 AM
Good info Gary. Congrats on the swap. Hmmm, I'm tempted. The thing that's slowing me down is the fact that that noisy fan does indeed turn on, so to me, it's doing something for cooling. Regardless, glad it's working out for you. I'll keep mulling it over.

WOLFN8TR
04-08-2013, 09:27 AM
Do it John it's worth it! The car runs better, kinda like adding the Sprint Booster.
You can hear the electric fan running. Others have stated the car is quieter after the swap and I figured it was because No Mechanical Fan. I drove the car after just swapping fans and yes it's quieter without the Mechanical Fan but once I removed the Aux Fan it made a big difference. Not sure why but very noticeable. Maybe the way the airflow was being channeled thru the Aux Fan?

terraphantm
04-08-2013, 01:10 PM
7485

On the E46, at least the M3, the aux/electric fan is controlled by the DME.

I am seriously tempted to try the non-M fan in my M3.

WOLFN8TR
04-12-2013, 05:10 PM
Mileage is getting better! Can't complain about that.
7855

johnrando
04-12-2013, 05:11 PM
You've just about talked me into it! :)

WOLFN8TR
04-12-2013, 05:24 PM
You've just about talked me into it! :)

Ha Ha! Did I tell ya how much better it runs too?
My wife's talking about running another half marathon in June I could come down then and chill will you. Do your Fan Mod, VANOS and Gold DISA!

Wait until you see my coolant temp monitor/gauge! That will convince you to do the Fan!

johnrando
04-12-2013, 05:47 PM
LOL. Sounds good!

terraphantm
04-13-2013, 03:35 AM
Mileage is getting better! Can't complain about that.
7855

That's it. I'm doing mine. I'm sure the extra capacity won't be needed unless I'm driving on the track in Arizona during a heat wave.

Pip
04-13-2013, 07:46 AM
Just spent 30min lining up the damn wrenches to get the auto fan off...electric fan next on my list of things I want so I never have to deal with the auto can ever again.

WOLFN8TR
04-13-2013, 05:53 PM
Just spent 30min lining up the damn wrenches to get the auto fan off...electric fan next on my list of things I want so I never have to deal with the auto can ever again.

That is another reason to do it!

WOLFN8TR
04-15-2013, 07:55 PM
Added OBDII Coolant Temp Gauge Info to the first post!

:jump

WOLFN8TR
04-20-2013, 09:06 PM
http://www.ultra-gauge.com/ultragauge/index.htm

I just purchased a UltraGauge for the ZHP. I was looking to add a Digital Coolant Temp gauge that would give a more accurate reading. When I found the UltraGauge I knew it exactly what I was looking for. This thing reads and clears engine codes, resets the "Check Engine" light, can monitor several parameters via the OBDII port. You can set alarms for the parameters being monitored which is really nice! If the engine coolant temp gets too high a beep sounds and the screen flashes. Very impressed with the quality and features with a unit that costs $70.

OBDII Info:
J1850 VPM Early GM & Chrysler
Ford Early Ford
9141-Early Chrysler / Foreign
KWP 2000 Rare, various
11-bit CAN Most 2008 and newer
29-bit CAN Most 2008 and newer Honda & Volvo
(9141 was found when plugged in to my car, 48 out of the 76 gauges available.)


http://img.tapatalk.com/d/13/04/21/u9upajeb.jpg


http://www.youtube.com/results?search_query=ultragauge+review&oq=Ultra&gs _l=youtube.1.0.35i39j0l9.391353.392753.0.395279. 5.5.0.0.0.0.409.727.4j4-1.5.0...0.0...1ac.1.3KpMBtVbKhI

http://youtu.be/Mo9naImUBmE

http://www.youtube.com/watch?v=Mo9naImUBmE

http://img.tapatalk.com/d/13/04/21/segy8esy.jpg

http://img.tapatalk.com/d/13/04/21/9aqava7e.jpg

http://img.tapatalk.com/d/13/04/21/y4eju8uz.jpg

danewilson77
04-21-2013, 05:07 AM
Can led color be changed?

Nice find.

Sent from my HTC6435LVW using Tapatalk 2

WOLFN8TR
04-21-2013, 08:45 AM
No it can't. That is the one thing I don't like. On the first page I posted 4 units and the ScanGauge II you can change the colors but it doesn't have alarm option.

jayjay_dee
04-22-2013, 09:25 AM
You've just about talked me into it! :)

John, if you havent done it yet, I will let you drive my car at the meet, and then you can compare how your auto-vert drives against my auto-sedan, both with Sprintbooster...

johnrando
04-22-2013, 11:10 AM
Thanks Jay Jay! I would like to try it. Gary said he'd help me do mine along with a list of other things so I am going to move forward.

WOLFN8TR
04-22-2013, 06:10 PM
Can led color be changed?

Nice find.

I mean YES! Introducing the WOLFN8TR Special Edition!

8038

8039

8040

Dave1027
04-25-2013, 11:05 AM
Can it go red? Will it show tranny temps?

WOLFN8TR
04-25-2013, 11:17 AM
Can it go red? Will it show tranny temps?

On the 2008 and newer Yes. Our years do not support it unfortunately. Here is my review and how I changed the color, red is doable.

http://www.zhpmafia.com/forums/showthread.php?t=9606

WOLFN8TR
04-25-2013, 05:35 PM
Dave I swapped out the 2 orange ones I had for a Red one. It actually matches perfect now, thanks!

8110

8111

8112

Dave1027
04-25-2013, 06:29 PM
Looking good in red !

WOLFN8TR
04-25-2013, 07:02 PM
Looking good in red !

Thanks for the idea Dave!

WOLFN8TR
04-27-2013, 06:25 PM
I hit 26.3 today! Gas mileage up 1.2 mpg since the fan swap!

8136

WOLFN8TR
05-21-2013, 08:43 PM
ECSTUNING Digital Vent Gauge for E46, But it's $450!

http://www.ecstuning.com/BMW-E46-330Ci-M54_3.0l/News/BMW_Bimmer_E46_3series_P3cars_Vent_Integrated_Digi tal_Interface_Boost_Coolant_Intake_Air_Exhaust_Gas _Temperature_Ignition_Timing_Throttle_Position_RPM _Shift_Light_Vehicle_Speed_0to60_Count_Battery_Vol tage_Gauge_1999_2000_2001_2002_2003_2004_2005_2006/?utm_source=emailcampaign&utm_medium=marketing&utm _content=retail&utm_campaign=BMW_E46_P3Cars_VIDI

rguti153
05-21-2013, 09:09 PM
Just seen it to

Sent from my DROID RAZR using Tapatalk 2

WOLFN8TR
06-28-2013, 06:36 PM
The Ultra Gauge readings when I got home today and pulled into the garage! It was 110 outside today. This weather is testing my "Mechanical Fan Delete Mod"! So far she is handling it. All the way home the engine temp was 192.2.

http://img.tapatalk.com/d/13/06/29/3u2atyve.jpg

http://img.tapatalk.com/d/13/06/29/syzyqesy.jpg

9281

http://img.tapatalk.com/d/13/06/29/age3unab.jpg

Fan to help cool her down!
http://img.tapatalk.com/d/13/06/29/ydyjehe7.jpg

Dave1027
07-03-2013, 09:36 PM
How is the mod doing in this heat wave we are having? How about idling in traffic with the AC on?

WOLFN8TR
07-04-2013, 08:29 AM
All is good! When I seen the upcoming temps for last weekend of 117 I was a bit nervous. My coolant temps stayed in range the entire time! AC worked great and not once started blowing warm. Sitting at Stop lights the coolant temp went from 192.2 (which seems to be the operating temp while moving) to 195.5 and the AIT went from 128 to 160. Working on the car is so much easier now. Really like this mod!

Dave1027
07-04-2013, 09:42 AM
This really makes me wonder why BMW engineers decided the AT cars needed a mechanical fan and an electric pusher fan when only a standard electric puller fan is more than enough?

johnrando
08-21-2013, 08:24 PM
I guess I realized that I should actually post in this thread that I finally did the swap. SO FA SO GOOD.

WOLFN8TR
08-22-2013, 08:58 AM
Welcome to the Club!

Lanister
12-25-2013, 11:51 AM
This is really messed up. Why would ECS list the OEM for $421 while other brands goe on Amazon for under $200? :scratchinghead

http://www.ecstuning.com/ES38183/

http://www.amazon.com/gp/product/B00B1FW1KU/ref=s9_simh_se_p263_d0_i5?pf_rd_m=ATVPDKIKX0DER&pf_rd_s=auto-no-results-center-1&pf_rd_r=07YFKTRR8HA9VE2CFFAT&pf_rd_t=301&pf_rd_p=1263465782&pf_rd_i=351038391

It seems there are different make brands out there. Considering how critical this part is, I wonder which brand to favor more without getting robbed.

alexandre
12-25-2013, 12:06 PM
This is really messed up. Why would ECS list the OEM for $421 while other brands goe on Amazon for under $200? :scratchinghead

http://www.ecstuning.com/ES38183/

http://www.amazon.com/gp/product/B00B1FW1KU/ref=s9_simh_se_p263_d0_i5?pf_rd_m=ATVPDKIKX0DER&pf_rd_s=auto-no-results-center-1&pf_rd_r=07YFKTRR8HA9VE2CFFAT&pf_rd_t=301&pf_rd_p=1263465782&pf_rd_i=351038391

It seems there are different make brands out there. Considering how critical this part is, I wonder which brand to favor more without getting robbed.

It's like that for the fuel pump too - $135 for the OEM, $300 for BMW. Pelican Parts lists the fan for $520, even more ridiculous.

Get Behr, they're the OEM I think (or at least they manufacture half the E46's cooling equipment - ET, rad, etc). ~$225.

Lanister
12-25-2013, 12:18 PM
Good call. I'm leaning toward Behr.

WOLFN8TR
12-25-2013, 05:28 PM
Good call. I'm leaning toward Behr.

Get the Behr fan and save yourself some money. I bought my Behr fan from Amazon, $197 shipped. Works great and one of the best mods I've done next to the Sprint Booster.

Lanister
12-25-2013, 06:22 PM
Ordering the fan shortly.

Sent from outer space...

Lanister
12-25-2013, 11:20 PM
Gary, can you clarify whether the expanding rivets you're listing are needed or they're just in case you break them?

51718229003 (4)
51118174185 (as many as your break)
51471919209 (as many as your break)

WOLFN8TR
12-25-2013, 11:35 PM
Those plastic rivets are just in case you break the existing ones. There are 4 plastic screw type rivets holding the fan shroud in place. I broke 1 of mine at first, then sprayed the other 3 with WD40 and they came right out. Those just hold the plastic shroud in place so you can use just about anything to attach it if you do break one.

Lanister
12-26-2013, 12:11 AM
Gotcha. I had my mechanical fan out once before and I didn't break any of the rivets. So I should be set.

WOLFN8TR
12-26-2013, 08:51 AM
Yep. The fan shroud rivets are the only ones that might break.

ELCID86
12-26-2013, 08:52 AM
I'm confused as to if the bumper needs to be removed in order to do this. ??

WOLFN8TR
12-26-2013, 09:08 AM
You can do it without completely removing the bumper but it's way easier to just remove the entire bumper. Removing the bumper is pretty easy anyway, especially if you have someone to help.

Delmarco posted a few videos over on E46Fanatics showing how he removed his Aux fan without completely taking the bumper off.

http://forum.e46fanatics.com/showthread.php?t=849735&page=20

ELCID86
12-26-2013, 09:29 AM
Thanks.

Lanister
12-26-2013, 10:09 AM
I'm going to take mine out completely so I can clean behind it and paint the grill black :D

Dave1027
12-26-2013, 10:15 AM
Would there be any benefit to leaving the front fan in place and somehow wiring it in like to come on whenever the AC is on? Or maybe come on at some higher temp threshold above the main puller fan just for extra protection.

Avetiso
12-26-2013, 10:17 AM
I'm going to take mine out completely so I can clean behind it and paint the grill black :D
What's this, I hear? A post-Christmas miracle? Giya is finally painting his lower grill?

Lanister
12-26-2013, 10:23 AM
Dave,

I think it's been discussed earlier in this thread. There seems to be no benefit to having both fans. One, it blocks air flow and two, it will double the draw on the electricity, which could mess with the new electrical fan.

Dario,

I can't wait to do it. It's such an eye sore! I was going to do it this weekend but rather not take the bumper off twice so I'll wait for the electric fan to come in next week and knock them all out in one go. The suspense is killing me :)

Lanister
12-26-2013, 10:41 AM
Fan ordered. It looks like the vendors have picked up on the popularity of this mod so the price has gone up a bit. Best deal I could find on a Behr OEM is $209 with free shipping from eEuroparts.com. Next best deal was on eBay for $229 + free shipping.

johnrando
12-26-2013, 10:59 AM
:like

Sent from my DROID4 using Tapatalk 2

ELCID86
12-30-2013, 06:30 PM
I'm working on my VCG/VANOS and need to get my fan/shroud out of the way. Do I have to have the Mechanical fan removal tool? Does Advance Auto lend them? (sorry, if not the best place to post this)

ELCID86
12-30-2013, 06:35 PM
I think I found the answer. I need the 32mm. http://www.beisansystems.com/procedures/e46_mechanical_fan_procedure.htm

kayger12
12-30-2013, 06:38 PM
I think I found the answer. I need the 32mm. http://www.beisansystems.com/procedures/e46_mechanical_fan_procedure.htm

PMd you.

Sent from my Nexus 7 using Tapatalk 4

danewilson77
12-30-2013, 06:59 PM
I think I found the answer. I need the 32mm. http://www.beisansystems.com/procedures/e46_mechanical_fan_procedure.htm

Yep.... And a swift quick whack towards the drivers side.

Sent from my SCH-I545 using Tapatalk

ELCID86
12-30-2013, 08:03 PM
Thanks. Bruce is going to hook me up.

Lanister
12-30-2013, 08:28 PM
I used a Mexican (adjustable) wrench and very long (1ft long) flat head screw driver to wedge it to prevent it from turning. No whacking was needed, it came off very easy.

JKO_ZHP
12-30-2013, 09:59 PM
:like
This will be the first thing I will do in 2014.

TigerTater
01-02-2014, 02:14 PM
Did anyone determine if a higher wattage fan leads to more airflow, or is everyone using the standard fan used by the manual cars? One other thing I'm not quite sure about, is how is the new fan controlled? Is it simply a connection swap and the DME then senses the new fan and activates it when necessary, or does it require a new relay or switch? Also is the fan nut a necessity, or just for a clean look? I figure I might as well do this while I'm in there changing some power steering hoses/ reservoir.

jakksfor20
01-02-2014, 02:18 PM
The new fan uses the controls of the fan that was in front of the radiator. You'll have to fish it through behind the passenger side headlight. Fan nut isn't necessary. I've got 3 cars and not a one has the nut on the pulley with no negative effects. It would look cleaner with it, but not necessary.

WOLFN8TR
01-02-2014, 02:27 PM
Did anyone determine if a higher wattage fan leads to more airflow, or is everyone using the standard fan used by the manual cars? One other thing I'm not quite sure about, is how is the new fan controlled? Is it simply a connection swap and the DME then senses the new fan and activates it when necessary, or does it require a new relay or switch? Also is the fan nut a necessity, or just for a clean look? I figure I might as well do this while I'm in there changing some power steering hoses/ reservoir.

All the info is in the very first post. Stock replacement fan is adequate, I live in the hot ass desert and it works perfect. But you just remove the Aux fan to get proper airflow. I constantly monitor the cooling temps with my UltraGauge and it's always between 192-197 degrees. Yes this is a simple swap fans and plug it in. The biggest part of it is removing the Aux fan as the front bumper has to come off to get it out. It's pretty easy with two people. Fan nut is just for bling factor.

Here is how the fan is controlled:

The electric cooling fan is controlled by the ECM. The ECM uses a remote power output
final stage (mounted on the fan housing). The power output stage receives power from a
50 amp fuse (E46 - located in glove box above the fuse bracket). The electric fan is controlled
by a pulse width modulated signal from the ECM.

The fan is activated based on the ECM calculation (sensing ratio) of:
• Coolant outlet temperature
• Calculated (by the ECM) catalyst temperature
• Vehicle speed
• Battery voltage
• Air Conditioning pressure (calculated by IHKA and sent via the K-Bus to the ECM)

After the initial test has been performed, the fan is brought up to the specified operating
speed. At 10% (sensing ratio) the fan runs at 1/3 speed. At a sensing ratio of between 90-
95% the fan is running at maximum speed. Below 10% or above 95% the fan is stationary.
The sensing ratio is suppressed by a hysteresis function, this prevents speed fluctuation.
When the A/C is switched on, the electric fan is not immediately activated.

It is run from 10 HZ to 100HZ a scope is the best way to see the signal. You can command the fan by creating a signal or using the RIGHT scan tool you can tell what speed you want it to run at and measure the HZ with a scope therfore checking you DME output.

Lanister
01-05-2014, 08:07 PM
Just did the mechanical fan delete. Super easy and loving the results. :thumbsup

johnrando
01-05-2014, 08:38 PM
Just did the mechanical fan delete. Super easy and loving the results. :thumbsup

:thumbup

WOLFN8TR
01-05-2014, 09:24 PM
Just did the mechanical fan delete. Super easy and loving the results. :thumbsup

Nice! Still lovin' mine.

ELCID86
01-05-2014, 09:53 PM
Just did the mechanical fan delete. Super easy and loving the results. :thumbsup

Nice. Where did you source the electric one?


Thumbs, iPhone, Tapatalk (http://tapatalk.com/m?id=1).

WOLFN8TR
07-25-2014, 04:15 PM
Bump for Auto ZHP's!

Dave1027
07-25-2014, 04:21 PM
I call us "Step brothers".

WOLFN8TR
07-25-2014, 04:45 PM
I call us "Step brothers".

:thumbup

johnrando
07-25-2014, 09:49 PM
+1

CarbonZHP
07-31-2014, 08:53 AM
Found this
http://www.amazon.com/Autoltc-Cooling-Fits-Series-17117561757/dp/B00GU152JW/ref=pd_sim_sbs_auto_5?ie=UTF8&refRID=1EEBEF5TAQSHQESEECRH

WOLFN8TR
07-31-2014, 09:06 AM
That's a good price but I'm not sure if I would go the cheap route on something so important. I would go with a Behr or Bosch for $200.

CarbonZHP
07-31-2014, 09:08 AM
Correct. Right now im just digging for manual part-outs

Vas
02-16-2016, 04:55 PM
I will be doing this conversion soon. The factory fan decided to explode and took out the belt.

So I ordered this fan https://www.fcpeuro.com/products/bmw-auxiliary-fan-assembly-e46-17117561757-17117561758. Also new pulleys and belts.

CarbonZHP
02-16-2016, 04:57 PM
My 100$ fan is still going strong after about 2 years

johnrando
02-16-2016, 07:58 PM
Sorry to hear Vas. I did the fan delete and no issues.

Sent from my SM-G900V using Tapatalk

SaltyNC
12-29-2017, 06:40 AM
Bumping an old thread. For those that have done this mod, is everything still working fine? No issues? As some of you know, I just purchased a 155K mile step auto, and I did a good bit of quick cosmetic refreshing, and now I'm starting in on the mechanical (pulleys, cooling, fan, etc). I'd rather go this route than replacing the mechanical fan parts.

Thanks!

Salty

Reasoned1
12-29-2017, 08:39 AM
I did this over a year ago on a 2004 330xi with a Behr fan. Works fine, but I live in the Northeast without any traffic to speak of.

Overboost
12-29-2017, 01:59 PM
There are a lot of opinions on this in an automatic but I subscribe to the fact that the factory put it there for a reason so I just replaced my fan clutch and fan blade and never looked back. Many members have done it and had no issues but the steptronic is a fragile piece if you overheat it...

johnrando
12-29-2017, 07:09 PM
No issues whatsoever for over 12 months for me. What sold me was Gary's old ZHP had no issues with this mod in the heat of Vegas.

Sent from my SM-G955U using Tapatalk

SaltyNC
12-29-2017, 07:50 PM
Thanks for the feedback, fellas. I ordered the fan. I'm going to give it a shot. It sure won't have any trouble keeping cool this week. Brr.

Salty

Smolck
01-08-2018, 03:02 PM
Absolutely zero to worry about with this mod. I bought an 02 330 steptronic car in October 2016. Put a manual fan from a junkyard car in it and removed the aux fan. The car runs a few degrees cooler and so does the trans (my scanner gives me real time data for trans and engine temp). Keep in mind, in central Alabama where I live we see HOT and HUMID weather from April till November. I also spend a lot of time idling while making calls, even in the heat of summer a I never got above 204 F.

Think of it this way, in 2004 the BMW X3 auto came with an electric fan from the factory. Same m54 engine we have, no mechanical fan. Same story on my friends 2004 530i, it's an E60, but has the m54 engine and an electric fan and auto trans. Shoot, my 5.7 Hemi Grand Cherokee has an electric fan, it's just fine to run your e46 this way. Enjoy!

johnrando
01-09-2018, 07:24 AM
Absolutely zero to worry about with this mod. I bought an 02 330 steptronic car in October 2016. Put a manual fan from a junkyard car in it and removed the aux fan. The car runs a few degrees cooler and so does the trans (my scanner gives me real time data for trans and engine temp). Keep in mind, in central Alabama where I live we see HOT and HUMID weather from April till November. I also spend a lot of time idling while making calls, even in the heat of summer a I never got above 204 F.

Think of it this way, in 2004 the BMW X3 auto came with an electric fan from the factory. Same m54 engine we have, no mechanical fan. Same story on my friends 2004 530i, it's an E60, but has the m54 engine and an electric fan and auto trans. Shoot, my 5.7 Hemi Grand Cherokee has an electric fan, it's just fine to run your e46 this way. Enjoy!

Hey. Long time! Welcome back. Congrats on the W.

Smolck
01-09-2018, 03:09 PM
Hey. Long time! Welcome back. Congrats on the W.

Hey Thanks! Good to be remembered! You still have the cleanest looking Vert I've ever seen!

danewilson77
01-09-2018, 03:59 PM
Hey Thanks! Good to be remembered! You still have the cleanest looking Vert I've ever seen!Welcome back Smolck. You were never forgotten.

Sent from my SM-G955U using Tapatalk

danewilson77
01-09-2018, 04:12 PM
Hey Thanks! Good to be remembered! You still have the cleanest looking Vert I've ever seen!Welcome back Smolck. You were never forgotten.

Sent from my SM-G955U using Tapatalk

anandoc
01-09-2018, 06:26 PM
Bumping an old thread. For those that have done this mod, is everything still working fine? No issues? As some of you know, I just purchased a 155K mile step auto, and I did a good bit of quick cosmetic refreshing, and now I'm starting in on the mechanical (pulleys, cooling, fan, etc). I'd rather go this route than replacing the mechanical fan parts.

Thanks!

Salty

I have had this mod since April 2017 and no issues. I have driven in bumper-bumper traffic over the summers with no issues whatsoever.

SaltyNC
01-09-2018, 06:48 PM
Thank you all for the additional input. It sounds like it is safe, especially if it can survive Alabama. We share that same hot and humid weather in NC. Besides, I already have the fan leaning against the wall and an anodized fan nut, so I have to do it, now. :)

Salty

johnrando
01-10-2018, 08:59 AM
Hey Thanks! Good to be remembered! You still have the cleanest looking Vert I've ever seen!

Thanks!

Smolck
01-11-2018, 08:33 PM
Welcome back Smolck. You were never forgotten.

Sent from my SM-G955U using Tapatalk

Group Hug! Thanks Dane!

yj4x4
03-03-2019, 06:20 PM
So finally getting around to doing this mod. I want to remove the aux pusher fan, however is there an easy way to pull the connector plug wiring without pulling the radiator/condenser? (and without cutting it)
34816

trancenation
05-24-2020, 12:55 PM
How is everyone's electrical fan swaps doing?

Also, i'm looking at brands and it looks like most places are stocking Coolxpert, though I do see some Behr units on ebay.

Thoughts on brand preference?

Thanks.

johnrando
05-24-2020, 08:44 PM
Still working great. Think I went with Behr.

Sent from my SM-G988U using Tapatalk

Will
05-25-2020, 02:30 PM
Working great for me as well (~11k miles). No brand preference, I got a deal on a Coolxpert when I bought my engine and went with it.

Chaplian
06-02-2020, 08:46 AM
Mine's working great at about a year old and 4-5k miles. Also a Coolxpert. Need to get in there one of these days and take the front bumper off to get rid of the aux fan, but has not been an issue even on days of around 100f yet.

@nextlvel
08-15-2020, 02:13 AM
Mine's working great at about a year old and 4-5k miles. Also a Coolxpert. Need to get in there one of these days and take the front bumper off to get rid of the aux fan, but has not been an issue even on days of around 100f yet.

Thanks for the reply, my ZHP mechanical fan just exploded, I’m in GA and we get 90 degree days consistently so to know yours has held up is great news!