OBC 19.7.00 - Watcha' go? doityourself

[Oli77]

96 is my answer. What's yours once plateaued?

[Hornung418]

What?

[Oli77]

Let's see if anybody gets it.

Pulling a Dane on you!

[danewilson77]

97 is my answer.

[edlvrt]

95-96, then the blades kick on. OH YEAH!!!

[Oli77]

I've not seen 97. Wonder if its seen often.

Any more entries?

[Johnmadd]

103

[spencers]

I'll try tomorrow.

[Oli77]

Was thinking to make a histogram with everybody's data but with 4 entries so far this won't be very representative.

Once you car is at operating temperature (driving if you are going straight):

Push the knob on the left in the gauge cluster (keep pushed, if you let go too soon, you will reset the trip odometer).

With finger still pushed, the display will change and say :Test. Let go of the knob for a second and then transiently, repeatedly and slowly, push on it and let go and push and let go. To the right, numbers will change, 01, 02 appears, then 03... push 17 more times until you get to 19.

Once you see 19 displayed and you have removed your finger, wait for " 1 off" to display and transiently push on the left knob once, twice,...7 times.

You are now looking at 19.7.00 which indicates operating engine coolant temperature in Celsius.

If you transiently push again (19.9.01) you get outside temperature, and then other data like RMP, speed in KMPH etc..

Just give me the temp, and we can get the distribution of operating engine temperature for the Mafiosi club.

[Johnmadd]

Disregard mine, was guessing.

[Oli77]

No guessing allowed!

Real hardcore data only.

[telijah]

Using a Bluetooth OBD reader, mine is consistently at 190F, so thats roughly 87-88C... mind you, my t-stat is stuck open, but thats my reading at full operating temp.

[edlvrt]

Once you car is at operating temperature (driving if you are going straight):

Push the knob on the left in the gauge cluster (keep pushed, if you let go too soon, you will reset the trip odometer).......

Can you do this while the car is running? I thought you had to press the knob with the car off, hold the knob in, then turn the key to the 2nd stop to turn the ignition on to start the process.

[Oli77]

Yes you can.

[Oli77]

Oli: 96
Dane: 97
Telijah: 88

Small sample so far.

[danewilson77]

Yeah....my 97 means squat, as I have no friggen idea what you're talking about.

[johnrando]

Yeah....my 97 means squat, as I have no friggen idea what you're talking about.

:rofl

[Kudos]

i'm at between 94-97. before my coolant was replaced it would sit at 99 to 101

[Oli77]

Yeah....my 97 means squat, as I have no friggen idea what you're talking about.

Whatca talkin' bout, Willis?

[edlvrt]

Oli: 96
Dane: 97
Telijah: 88

Small sample so far.

My 96* don't count?

[Oli77]

Sure does! (my bad).

Oli: 96
Dane: 97 (give us the real one)
Telijah: 88
edlvrt: 96

How many members on the forum again?

[Hornung418]

Can someone please tell me what this means?

[Oli77]

You know, the On Board Computer values when you push on the reset knob on your cluster, the "Easter Eggs" some people call them.

You get your live, second-by-second engine temperature from the sensor. try it.

[Hornung418]

Ah okay, engine temp. I knew this was on the cluster, but I didn't know what exactly we were looking for.

[Oli77]

Yeah, thats the code for engine temp 19.7.00

[MrMaico]

96 to 97C......or 205 to 207F on my Garmin EcoRoute temp gauge. I had been meaning to check this to see how accurate the Garmin is, thanks for the reminder. Tried out the cluster check too, looks cool!

Something I've noticed......when I run up through the gears my temp will briefly drop from 205 to around 190 (87C) or so. I notice it if I accelerate from 1st or 2nd gear up to 5th or 6th and running it up to 5000 to 6000 rpm in each gear. Temp will gradually drop just after hitting the top gear and come back up to normal within a minute or so. Can someone try this and see if yours does it?

Thanks.....Barry

[Oli77]

Oli: 96
Dane: 97 (give us the real one; whenever you're ready:talktome )
Telijah: 88
edlvrt: 96
MrMaico: 97

About your comment, I too notice a drop when (I think) you accelerate and push more air onto the radiator, then when you slow down or come to a stop, temp rises.

Still small turnout can we get more values?

[spencers]

Okay. Finally got around to this today

90

[Oli77]

Oli77: 96
Dane: 97 (give us the real one; whenever you're ready )
Telijah: 88
edlvrt: 96
MrMaico: 97
Spencers: 90 (you and Telijah are "in-a club")

[LivesNearCostco]

I *think* mine peaked around 95C, but don't remember for sure. Right after I replaced my thermostat last year the car overheated so I was using this OBC function a lot to monitor coolant temps, but I didn't know I could trigger it after the car was running. I think driving easy downhill on a cool day with the heater off it was down to 91 or 92C, and idling it would rise to between 93 and 95 before the fan kicked in. Will try this later so you can have another data point instead of my fuzzy recollection.

[derbo]

Mine read 95C on the freeway tonight with ambient temp at 48F


Sent from my iPhone using Tapatalk

[Oli77]

Oli77: 96
Dane: 97 (give us the real one; whenever you're ready )
Telijah: 88
edlvrt: 96
MrMaico: 97
Spencers: 90
Livesnearcoscto: 95 (will check).
derbo: 95

[MrMaico]

About your comment, I too notice a drop when (I think) you accelerate and push more air onto the radiator, then when you slow down or come to a stop, temp rises.

I would think the thermostat would react faster than that, that's a pretty big temp drop. I really have no good idea what it might be though.


Okay. Finally got around to this today

90

I wonder if it's the fact that your car is a 2001 that would explain the cooler temp. I've always heard that newer cars are designed to run hotter to help meet emission and fuel economy regulations.

[spencers]

I wonder if it's the fact that your car is a 2001 that would explain the cooler temp. I've always heard that newer cars are designed to run hotter to help meet emission and fuel economy regulations.

Hmmm... Good point. I'll have to test this again sometime soon.

The car was fully heated up and the reading was taken/monitored during city driving. Maybe it would be different highway driving.

[MrMaico]

Hmmm... Good point. I'll have to test this again sometime soon.

The car was fully heated up and the reading was taken/monitored during city driving. Maybe it would be different highway driving.

I've been monitoring mine for over a year now and I don't see any real difference between city and highway. I see 205 (96.1) most of the time but have seen it vary from 188 (86.6) up to 212 (100). 205 seems to be the average though.

[Oli77]

I wonder if it's the fact that your car is a 2001 that would explain the cooler temp. I've always heard that newer cars are designed to run hotter to help meet emission and fuel economy regulations.


Good point. Need more data...

[LivesNearCostco]

I monitored mine today on a drive, maybe 14 miles round trip. I never saw it go above 92C, which is weird, as I was sure it went higher than that last summer when I first discovered how to monitor it with the OBC. Weather was 55F and as I drove to then on the freeway, it never got higher than 72C. Once I exited the freeway and stopped at a light, it climbed into the low 80's and after some parking lot action it got all the way up to 90C. I stepped (motor running) to unload something and when I got back in the fan had come on and it was back down to 88C so am not sure how high it got.

Going back to the freeway ranged from 86C to 91C, then on the freeway dropped into the 70's (71-77C). Exited freeway and it went into the 80's. Finally I stopped in front of my garage and sat with the motor running. It climbed slowly up to 91 then dropped to 88, back up to 91, dropped to 88. My theory is my fan is turning on at 91C and turning off at 88C.

This all seems kind of low. Maybe my thermostat is stuck open? It has ~85,000 miles on it. But the buffered temp needle stays in the middle. Mods include EMP Stewart pump (more flow) and underdrive pulleys (less flow). I will try to monitor again on a hotter day.

[derbo]

my bone stock car on the freeway is around 95. During traffic (40mph) on the freeway the car dropped down to 90-92. But overally stock new composite waterpump and stock pulleys for me was done 20k ago.

[MrMaico]

I monitored mine today on a drive, maybe 14 miles round trip. I never saw it go above 92C, which is weird, as I was sure it went higher than that last summer when I first discovered how to monitor it with the OBC. Weather was 55F and as I drove to then on the freeway, it never got higher than 72C. Once I exited the freeway and stopped at a light, it climbed into the low 80's and after some parking lot action it got all the way up to 90C. I stepped (motor running) to unload something and when I got back in the fan had come on and it was back down to 88C so am not sure how high it got.

Going back to the freeway ranged from 86C to 91C, then on the freeway dropped into the 70's (71-77C). Exited freeway and it went into the 80's. Finally I stopped in front of my garage and sat with the motor running. It climbed slowly up to 91 then dropped to 88, back up to 91, dropped to 88. My theory is my fan is turning on at 91C and turning off at 88C.

This all seems kind of low. Maybe my thermostat is stuck open? It has ~85,000 miles on it. But the buffered temp needle stays in the middle. Mods include EMP Stewart pump (more flow) and underdrive pulleys (less flow). I will try to monitor again on a hotter day.

How old is your thermostat? In your other post you mention you changed it last year.

What year is your car? M54? At any rate, that's way too cold. Do you have any hidden codes? At those temps I would think it would light a CEL though. I would have to think it's the thermostat.

[LivesNearCostco]

My car is a 2003 (August 2003 build) and if we believe the indie shop that once serviced my car two owners ago, my thermostat has 85,000 miles on it and was changed around 2008. I did put in a new aluminum bodied one 10 months ago but it stuck shut, throwing a code and overheating my car, so I put the old one back on.

This morning I drove the ZHP to work (instead of the beater car) and conveniently got stuck in street traffic. Air temps 45-48F. OBC coolant temps cycled same as yesterday... rose to high 70's while driving, 80's at stoplights. When I got stuck in slow traffic, it cycled as follows
88 to 90 to 88 to 90 to 88 to 91 to 88 to 92 to 88 to 91 to 88 to 92.
On the freeway it went back down to the high 70's, and when coasting down a long off-ramp with zero throttle went as low as 73C. When parking got back into the high 80's.

Maybe my thermostat is stuck open. I have a new Wahler thermostat leftover from the warranty replacement of the aluminum one. Maybe I should put that in.

When my coolant temp cycles between 88C and 92C does anyone know if that is the thermostat opening and closing or the fan turning on and off? Are these thermostats set to open at 90C? 95C?

[MrMaico]

My car is a 2003 (August 2003 build) and if we believe the indie shop that once serviced my car two owners ago, my thermostat has 85,000 miles on it and was changed around 2008. I did put in a new aluminum bodied one 10 months ago but it stuck shut, throwing a code and overheating my car, so I put the old one back on.

This morning I drove the ZHP to work (instead of the beater car) and conveniently got stuck in street traffic. Air temps 45-48F. OBC coolant temps cycled same as yesterday... rose to high 70's while driving, 80's at stoplights. When I got stuck in slow traffic, it cycled as follows
88 to 90 to 88 to 90 to 88 to 91 to 88 to 92 to 88 to 91 to 88 to 92.
On the freeway it went back down to the high 70's, and when coasting down a long off-ramp with zero throttle went as low as 73C. When parking got back into the high 80's.

Maybe my thermostat is stuck open. I have a new Wahler thermostat leftover from the warranty replacement of the aluminum one. Maybe I should put that in.

When my coolant temp cycles between 88C and 92C does anyone know if that is the thermostat opening and closing or the fan turning on and off? Are these thermostats set to open at 90C? 95C?

Just a guess on my part but I would think it is the fan kicking in at 92. Since mine seems to run at 205F I would think we have a 95C stat. I heard my fan kick in while I was idling the other day but my temp was at 210F iirc. Not sure why yours is kicking it at 92. Faulty temp sensor?

[Oli77]

It would be nice to know at what temp our T-stat opens up.

So we have the following.

Oli77: 96
Dane: 97 (Won't give us the real number! )
Telijah: 88
edlvrt: 96
MrMaico: 97
Spencers: 90
Livesnearcoscto: 90 (Sounds about right?).
derbo: 95

More data would be great.

[MrMaico]

I got to wondering today about the stat and why and how it is electrically controlled. According to Bentley.....

The electrically heated thermostat allows the engine to be operated at higher temps at idle and part throttle. Having the ability to control the engine coolant temperature electronically results in improved emissions and fuel economy.

I had wondered if the drop in temp when I run through the gears harder than normal was just to make it easier on the engine during "spirited" driving.....cooler oil temps, less chance of detonation/pinging etc. Maybe that might actually be the case? :dunno

Comments anyone?

[LivesNearCostco]

The Rock Auto parts catalog says OEM opening temp for our thermostats is 97C (206F). It's lower for my old Saturn (188/195F) and my minivan (170/180F). A 2010 Saturn Aura is spec'd at 180F. A 2011 Mustang V8 (or Focus 2.0L) is at 190F. 2011 BMW 328i (and the 1M turbo 6) also uses 97C. The 1998 BMW M3 calls for a 176F (80C) or 190F thermostat.

So newer BMWs like to run it hot and I'm guessing the others don't have a heater circuit so the computer can open it early. If we assume the DME can open a closed thermostat using the heater circuit but cannot close an open thermostat, then probably BMW spec'd a thermostat that opens at a higher temp than normal (maybe normal is 90C?) to give the DME more control.

If my thermostat is stuck open, will it hurt anything other than my gas mileage? Does running the engine at the proper temp more of the time mean better fuel economy and lower smog emissions without any tradeoffs? Or does higher coolant temp also mean less power?

[Oli77]

Last winter I drove around with a T-stat stuck open and my gas mileage dropped significantly. I did not feel a loss of power (but mine is smaller than yours :))

That "heating the thermostat" business seems counter intuitive. But perhaps it allows for a smoother temperature control depending on how hard you pull on it and on exterior temp as well.

[shanneba]

My last trip where I recorded data showed an engine coolant temp max of 192F ~ 89C. (March 15th 2012)

Here is some BMW info on the thermostat MAP:

http://wds.spaghetticoder.org/en/zinfo/HEL0498FB1214_M0KFK.htm

Here is some data recorded with AutoEnginuity software from my 2003 330Ci that shows the operation of the MAP thermostat.
Blue is the oil temp
green is the coolant temp in the engine
orange is the coolant temp at the radiator outlet
red is the engine rpms

You can see when the load/rpms increase, the thermostat opens to cool the engine. The coolant temp at the radiator outlet increases with the higher flow.
I see this start normally around 3000 rpms under load.

I have the stewart water pump, original thermostat, original pulleys and I run Red Line Water Wetter.
I see about a 5-8 F degree drop in my coolant temps when running the water wetter. Not much.

http://forum.e46fanatics.com/attachment.php?attachmentid=392815&d=1297364917

[GT172I]

96 max, mostly around 94 with 80*F ambient

[MrMaico]

My last trip where I recorded data showed an engine coolant temp max of 192F ~ 89C. (March 15th 2012)

Here is some BMW info on the thermostat MAP:

http://wds.spaghetticoder.org/en/zinfo/HEL0498FB1214_M0KFK.htm

Here is some data recorded with AutoEnginuity software from my 2003 330Ci that shows the operation of the MAP thermostat.
Blue is the oil temp
green is the coolant temp in the engine
orange is the coolant temp at the radiator outlet
red is the engine rpms

You can see when the load/rpms increase, the thermostat opens to cool the engine. The coolant temp at the radiator outlet increases with the higher flow.
I see this start normally around 3000 rpms under load.

I have the stewart water pump, original thermostat, original pulleys and I run Red Line Water Wetter.
I see about a 5-8 F degree drop in my coolant temps when running the water wetter. Not much.

http://forum.e46fanatics.com/attachment.php?attachmentid=392815&d=1297364917

Great info! Thanks! So this confirms what I was thinking, running the engine harder opens the stat fully via the heater circuit.

I had been thinking of trying some water wetter, I think I'll have to get some. I'd much rather see 192 than the 205 I normally run. Maybe should have went with a Stewart when I did my cooling system overhaul.

Interesting to find out the temp range before the gauge actually moves....167 to 235F or 75 to 113C.

Thanks again.....Barry

[Oli77]

Man, this is not your run-of-the-mill thermostat!

That would explain why when you pull on it, temperature drops a bit and seems to have nothing to do with air flow. Instead, it is the internal thermostat control that allows for dynamic control of engine temperature at different RMPs! Not a simple closed-open T-stat, more like 2 t-stat 2 different set points and a heating element on top of it! I'm amazed. Thanks for the info Shanneba.

Back to our regular schedule programing...

Oli77: 96
Dane: 97 (Won't give us the real number! )
Telijah: 88
edlvrt: 96
MrMaico: 97
Spencers: 90
Livesnearcoscto: 90 (Sounds about right?).
derbo: 95
GT172I: 96
shanneba: 89

[telijah]

I'll check mine again this afternoon, as I am now thinking I am closer to the lower 90s. I'll update later. I'll post both was OBC shows and what OBD shows, which hopefully reads from the same place.

Apparently, according to the last recorded run (http://i.imgur.com/l2TUK.png), even at 116 (km/h!), mine was running at 84 degrees...

[LivesNearCostco]

Changed mine... 90-92C is my peak temp when idling. I'm really thinking of replacing the thermostat. I have an unused Wahler sitting at home, just feeling too lazy to jack up the front, remove the undertray and belt, drain some of the coolant, loosen the engine hoist hook, rebleed, etc. What happened to me? But I am expecting new rear coilover springs today. To install front springs I have to jack up the front anyway, so maybe I'll replace the thermostat then.


Back to our regular schedule programing...

Oli77: 96
Dane: 97 (Won't give us the real number! )
Telijah: 88
edlvrt: 96
MrMaico: 97
Spencers: 90
Livesnearcoscto: 91 (peak--as low as 77C when cruising)
derbo: 95
GT172I: 96
shanneba: 89

[MrMaico]

I left that hoist hook off when I did my cooling system. Looks better without it sitcking out there and I don't have any plans of pulling my engine any time soon....I hope. :-)

[Oli77]

hmmmm, the cooling surface area provided by that hook is now gone which may raise your engine temperature.

Oli77: 96
Dane: 97 (Won't give us the real number! )
Telijah: 88
edlvrt: 96
MrMaico: 97
Spencers: 90
Livesnearcostco: 91.
derbo: 95
GT172I: 96
shanneba: 89

[MrMaico]

hmmmm, the cooling surface area provided by that hook is now gone which may raise your engine temperature.



Possibly, but that should be more than offset by the smoother airflow over the engine. :biggrin

[Oli77]

True ;)

Why aren't more mafiosos pushing the knobs on their cluster to answer my little friendly gentle question?

[LivesNearCostco]

Little tip, don't reach through the steering wheel to push the knob 27 times if you're at an intersection waiting to make a turn. Unless you have very fast hands or can stretch like Mr. Fantastic.

[Hochspannung]

87 ... Then I turned on the heat and it started dropping all the way down to 81 then I reached my destination. Mixed city drive with brief highway short cut

[Oli77]

Thank you sir.

Oli77: 96
Dane: 97 (Won't give us the real number! )
Telijah: 88
edlvrt: 96
MrMaico: 97
Spencers: 90
Livesnearcostco: 91.
derbo: 95
GT172I: 96
shanneba: 89
Hochspannung: 87

[Hochspannung]

does this mean I'm in the lead so far since i have the lowest score haha?

[RITmusic2k]

Okay guys,

My numbers are super low. I peaked at around 76. I'm going to try to confirm my readings with my Scangauge, but at the moment it looks like I may be the victim of a stuck-open thermostat.

[Oli77]

Yup. Your temp needle doesn't reach the middle?

[RVAzhp]

i'll try tomorrow...but, honestly, my luck pressing that little knob has been rather hit/miss. it takes me forever to reset my oil/inspection shit.

[LivesNearCostco]

That's like what I got if I stay on the freeway with outside temps in the 45F-55F range, peaked around 77C until I got to surface streets and stoplights.
For you other mafioso who were higher than 90C... did your coolant temps stay above 90C even on the freeway?


Okay guys,

My numbers are super low. I peaked at around 76. I'm going to try to confirm my readings with my Scangauge, but at the moment it looks like I may be the victim of a stuck-open thermostat.

[kayger12]

95

Sent from my outdated Droid X

[Oli77]

Yes

[MrMaico]

That's like what I got if I stay on the freeway with outside temps in the 45F-55F range, peaked around 77C until I got to surface streets and stoplights.
For you other mafioso who were higher than 90C... did your coolant temps stay above 90C even on the freeway?

Mine stays for the most part at 96. City or highway driving or outside air temp don't and shouldn't, make any difference. That's what your thermostat is supposed to do....maintain a constant temp. Or, if you're running the car harder, it should drop the temp a ways. I played around with that a bit last night and saw it drop down to as low as 87.

Also, of course, running the a/c with high ambient temps in the city or slow speed twisties will raise the temp some. I've seen mine as high as 100C in those conditions because at that point the cooling system has a hard time keeping up.

If you're running temps below the mid 90's, I'd have to wonder how well your stat is working.

[Oli77]

i'll try tomorrow...but, honestly, my luck pressing that little knob has been rather hit/miss. it takes me forever to reset my oil/inspection shit.

I suspect this is Dane's problem as well. Unable-to-push-button-in-with-left-hand-itis.

[Oli77]

95

Sent from my outdated Droid X

Thanks Boss.


If you're running temps below the mid 90's, I'd have to wonder how well your stat is working.

Perhaps yes, I would say the higher temperatures are present at a rate 3 times the lower temps.

[Oli77]

Oli77: 96
Dane: 97 (Won't give us the real number!:scratchinghead )
Telijah: 88
edlvrt: 96
MrMaico: 97
Spencers: 90
Livesnearcostco: 91.
derbo: 95
GT172I: 96
shanneba: 89
Hochspannung: 87
Kayger12: 95

[danewilson77]

I suspect this is Dane's problem as well. Unable-to-push-button-in-with-left-hand-itis.

Car has been kind of up and down with the rim issues I am having. Asking for grace here. I will get it done my friend. I will get it done.

I am been informed and will complete the task that's been assigned.

[Oli77]

link me to your rim issue (i have missed it obviously).

[danewilson77]

link me to your rim issue (i have missed it obviously).

Starts around post 2501.

http://www.zhpmafia.com/forums/showthread.php?698-***-GENERAL-CHAT-THREAD-***/page251

Original damage is below. They ran into is with another vehicle.

http://i1015.photobucket.com/albums/af278/nicee46/IMAG1258.jpg

[Oli77]

SheiBe

[danewilson77]

SheiBe

+1

HTC Thunderbolt+TT

[danewilson77]

95...all the way home from Norfolk.


HTC Thunderbolt+TT

[LivesNearCostco]

You guys convinced me to replace my thermostat. If it makes me run a steady 95-96C on the freeway, maybe that will improve my gas mileage.

[MrMaico]

95...all the way home from Norfolk.


HTC Thunderbolt+TT

Right on the money! The weekend I checked mine via the dash it was reading 97C or 207F on the Garmin gauges rather than the usual 205 (96C) average reading. Since then it's been back to 205 that I normally see.....weird that it was reading those 2 degrees higher for a couple days.

[Oli77]

Thanks Boss.

Oli77: 96
Dane: 95
Telijah: 88
edlvrt: 96
MrMaico: 97
Spencers: 90
Livesnearcostco: 91.
derbo: 95
GT172I: 96
shanneba: 89
Hochspannung: 87
Kayger12: 95

Must....get.... more . . . . data

[johnrando]

I'll try to remember to chip in tomorrow.

[RITmusic2k]

Update to my situation:

My car's not as misbehaved as I thought last time around; I must've just been getting some good cold air from somewhere. My temperature gauge does rise to its vertical position during normal driving -- I tried running the car hard and hot recently, and while idling / creeping in slow traffic, I got the reading up to 88°C, though it would quickly drop to the low 80s once I got to traffic speed. My scangauge confirmed 189°F coolant temperature. Close enough.

[LivesNearCostco]

sounds like my car... high 80's to low 90's (Celsius) when stuck in traffic, high 70's to low 80's on the freeway.

[Oli77]

Oli77: 96
Dane: 95
Telijah: 88
edlvrt: 96
MrMaico: 97
Spencers: 90
Livesnearcostco: 91
derbo: 95
GT172I: 96
shanneba: 89
Hochspannung: 87
Kayger12: 95
RITmusic2k: 83 (?)

[MrMaico]

I'd say you can change mine to 96C Oli. It's been that temp (205F) about 75 or 80% of the time since I got my Garmin EcoRoute OBDII Bluetooth setup about a year ago. Not sure why it was reading 97C that weekend I posted mine. Low outside air temps, down to upper 20's F anyway, don't drop the coolant temp at all. Never had it out in any colder weather. The only time it changes is if I'm running harder than normal and it drops 10 to 15 degrees F or if it's hot out (upper 80's or so OAT) with the a/c on. Then I've seen a max of 212F (100C).

Good idea starting the thread Oli. It's been both interesting and educational.

Barry

[Oli77]

Thanks bud, I've been playing around with that thing for a while too. It's pretty dynamic and fun +, as you say, I learned a lot of stuff.

Just wish we had more input, we could get some cool graphics on the population of Mafiosis driving E46s. We could also find out about when or if the T-stats, water pumps, were changed etc...

Numbers are in Celsius once reached a plateau.

Oli77: 96
Dane: 95
Telijah: 88
edlvrt: 96
MrMaico: 96
Spencers: 90
Livesnearcostco: 91
derbo: 95
GT172I: 96
shanneba: 89
Hochspannung: 87
Kayger12: 95
RITmusic2k: 83 (sounds about right boss?)

Four out of 14 are below 90, the rest are above.

[Hornung418]

I feel that the DME such as MS43 vs. MS45.1 should be noted along with operating temp.

For example Spencer is running MS43 on Euro3 specs and Travis is running Stock MS43 both early models.

I know for a fact that MS45.1 was introduced to reduce emissions so the operating temp could be higher just for that fact in all DMEs produced after 09/2003.

[Oli77]

I agree but are their numbers much different? Sorry don't know Travis' username (my bad).

For a valid comparison of values, though, we should all be reading the same way, through OBC. The DME that you speak of resides in the OBC?

[Hornung418]

Travis is Telijah.

The DME is the engine management system, and it varied throughout e46 production.

99-00 323/328 run Siemens MS42 DME

01-03 325/330 excl. ZHP run Siemens MS43 DME

03-06 325/330 incl. ZHP run Siemens MS45.1 DME.

I'm running Euro2 on MS42 so I'm interested to see what my OpTemp is.

[RITmusic2k]

RITmusic2k: 83 (sounds about right boss?). Yep, 'bout right. I hate being an outlier.

[LivesNearCostco]

Just started thermostat replacement process. Hopefully have updated OBC temps in a few hours.

[terraphantm]

Usually 82 (M3)

My old ZHP ran at 95

[Oli77]

Numbers are in Celsius once reached a plateau.

Oli77: 96
Dane: 95
Telijah: 88
edlvrt: 96
MrMaico: 96
Spencers: 90
Livesnearcostco: 91
derbo: 95
GT172I: 96
shanneba: 89
Hochspannung: 87
Kayger12: 95
RITmusic2k: 83
terraphantm: 95

I am still scratching my head about noting the DME version for each user. Can I just assume the version based on the date of the car ?

[MrMaico]

I am still scratching my head about noting the DME version for each user. Can I just assume the version based on the date of the car ?

That's what I was thinking.....maybe just year and engine size/type?

2004 3.0L M54 ZHP

Not everyone is going to know which DME they even have.

[terraphantm]

In general, with the E46:

M52s use MS42
US M54s before 03/2003 and Euro M54s use the MS43
US M54s 03/2003 and later use the MS45.1 (therefore all ZHPs use the MS45.1)
M56s (325 SULEVs) use the MS45.1 (regardless of build date).

[Oli77]

OK I'll edit based on the entries we have...

[LivesNearCostco]

Put in new T-stat, drove to recycling center to dispose of old coolant then drove to work in ambient temps of 65-68F. Now OBC displays 95C when moving (occasional 96C) and moves between 96-99C when stopped or in traffic. My old T-stat was either stuck open or opening too soon. Old T-stat was BMW brand with 85,000 miles on it. New T-stat is Wahler with 10 miles on it. In 4-6 weeks I should know if this improves my gas mileage. Edited table below.

Numbers are in Celsius once reached a plateau.
Oli77: 96
Dane: 95
Telijah: 88
edlvrt: 96
MrMaico: 96
Spencers: 90
LivesNearCostco old T-stat: 91 (77-91 while moving)
LivesNearCostco new T-stat: 95 (95-96 while moving)
derbo: 95
GT172I: 96
shanneba: 89
Hochspannung: 87
Kayger12: 95
RITmusic2k: 83
terraphantm: 95

[Hermes]

Oli77: 96
Dane: 95
Telijah: 88
edlvrt: 96
MrMaico: 96
Spencers: 90
LivesNearCostco old T-stat: 91
LivesNearCostco new T-stat: 95
derbo: 95
GT172I: 96
shanneba: 89
Hochspannung: 87
Kayger12: 95
RITmusic2k: 83
terraphantm: 95
Hermes: 95

[Oli77]

Put in new T-stat, drove to recycling center to dispose of old coolant then drove to work in ambient temps of 65-68F. Now OBC displays 95C when moving (occasional 96C) and moves between 96-99C when stopped or in traffic. My old T-stat was either stuck open or opening too soon. Old T-stat was BMW brand with 85,000 miles on it. New T-stat is Wahler with 10 miles on it. In 4-6 weeks I should know if this improves my gas mileage. Edited table below.

Win! Low reading = failed T-stat?

[terraphantm]

Win! Low reading = failed T-stat?

Probably - I'm pretty sure the only reason my M3 runs at 83 is because the T-stat is designed to open up at 82. In the non-Ms, I believe it opens up at 95. However, the DME can open the T-stat at lower temperatures if it wants to. I'm not sure what conditions makes it do so though

[Oli77]

Take a look at this, I think 89 is the number where that sucker opens:


My last trip where I recorded data showed an engine coolant temp max of 192F ~ 89C. (March 15th 2012)

Here is some BMW info on the thermostat MAP:

http://wds.spaghetticoder.org/en/zinfo/HEL0498FB1214_M0KFK.htm

Here is some data recorded with AutoEnginuity software from my 2003 330Ci that shows the operation of the MAP thermostat.
Blue is the oil temp
green is the coolant temp in the engine
orange is the coolant temp at the radiator outlet
red is the engine rpms

You can see when the load/rpms increase, the thermostat opens to cool the engine. The coolant temp at the radiator outlet increases with the higher flow.
I see this start normally around 3000 rpms under load.

I have the stewart water pump, original thermostat, original pulleys and I run Red Line Water Wetter.
I see about a 5-8 F degree drop in my coolant temps when running the water wetter. Not much.

http://forum.e46fanatics.com/attachment.php?attachmentid=392815&d=1297364917

[Oli77]

Numbers are in Celsius, once plateau is reached.

Oli77 [2005 2.5L M54 DME-MS45.1] : 96
Danewilson77 [2004 3.0L M54 DME-MS45.1] : 95
Telijah [2001 3.0L M54 DME-MS43] : 88 (suspects open T-stat)
edlvrt [2004 3.0L M54 DME-MS45.1] : 96
MrMaico [2004 3.0L M54 DME-MS45.1]: 96
Spencers [2001 2.5L M54 DME-MS43] : 90
LivesNearCostco [2003 3.0L M54 DME-MS45.1] : 91 (old T-stat)
LivesNearCostco [2003 3.0L M54 DME-MS45.1] : 95 (new T-stat)
derbo [2004 3.0L M54 DME-MS45.1] : 95
GT172I [2004 3.0L M54 DME-MS45.1] : 96
shanneba [2003 3.0L M54 DME-MS43] : 89 (when in 2003?)
Hochspannung [2005 3.0L M54 DME-MS45.1] : 87 that's the outlier, unless these are the M car values.
Kayger12 [2005 3.0L M54 DME-MS45.1] : 95
RITmusic2k [2004 3.0L M54 DME-MS45.1] : 83 T-stat work ongoing
terraphantm [xxxx 3.0L M54 DME-MS45.1] : 95 provide year on non-M
Hermes: [xxxx 3.0L M54 DME-MS45.1] = 95 provide year please

Please check if I got these right.

[shanneba]

Here is a similar graph from data taken in July of 2010.
It looks like the thermostst starts to open at about 180F ~ 82C A little easier to see in this graph.

Red is coolant temp in engine
orange is oil temp
blue is coolant temp at the radiator outlet
green is engine speed

[shanneba]

My 2003 is 02/2003 production with the MS43 DME.
Original thermostat.
Stewart pump, standard pullies.
Red Line water wetter / 50/50 BMW coolant.
Dinan Stage 2 software
Auto trans

[Oli77]

Actually, I don't see what you mean, when the red line reaches ~150F, there is a slow down in the rate temperature rise (opened t-stat?), and then the rate is faster and then it plateaus at ~190.

I don't see anything pointing to 180F.

[shanneba]

The blue line, radiator outlet temp, doesn't start to rise until the engine temp hits 180F indicating coolant is flowing through the radiator to the lower hose.
It could be opening a little before 180F, and it takes until 180F for the pump to circulate coolant equal to the volume in the radiator.

[terraphantm]

Numbers are in Celsius, once plateau is reached.

Oli77 [2005 2.5L M54 DME-MS45.1] : 96
Danewilson77 [2004 3.0L M54 DME-MS45.1] : 95
Telijah [2001 3.0L M54 DME-MS43] : 88 (suspects open T-stat)
edlvrt [2004 3.0L M54 DME-MS45.1] : 96
MrMaico [2004 3.0L M54 DME-MS45.1]: 96
Spencers [2001 2.5L M54 DME-MS43] : 90
LivesNearCostco [2003 3.0L M54 DME-MS45.1] : 91 (old T-stat)
LivesNearCostco [2003 3.0L M54 DME-MS45.1] : 95 (new T-stat)
derbo [2004 3.0L M54 DME-MS45.1] : 95
GT172I [2004 3.0L M54 DME-MS45.1] : 96
shanneba [2003 3.0L M54 DME-MS43] : 89 (when in 2003?)
Hochspannung [2005 3.0L M54 DME-MS45.1] : 87 that's the outlier, unless these are the M car values.
Kayger12 [2005 3.0L M54 DME-MS45.1] : 95
RITmusic2k [2004 3.0L M54 DME-MS45.1] : 83 T-stat work ongoing
terraphantm [xxxx 3.0L M54 DME-MS45.1] : 95 provide year on non-M
Hermes: [xxxx 3.0L M54 DME-MS45.1] = 95 provide year please

Please check if I got these right.

Mine was a 2003 ZHP

[Oli77]

Numbers are in Celsius, once plateau is reached.

Oli77 [2005 2.5L M54 DME-MS45.1] : 96
Danewilson77 [2004 3.0L M54 DME-MS45.1] : 95
Telijah [2001 3.0L M54 DME-MS43] : 88 (suspects open T-stat)
edlvrt [2004 3.0L M54 DME-MS45.1] : 96
MrMaico [2004 3.0L M54 DME-MS45.1]: 96
Spencers [2001 2.5L M54 DME-MS43] : 90
LivesNearCostco [2003 3.0L M54 DME-MS45.1] : 91 (old T-stat)
LivesNearCostco [2003 3.0L M54 DME-MS45.1] : 95 (new T-stat)
derbo [2004 3.0L M54 DME-MS45.1] : 95
GT172I [2004 3.0L M54 DME-MS45.1] : 96
shanneba [2003 3.0L M54 DME-MS43] : 89 (running water wetter and stewart pump)
Hochspannung [2005 3.0L M54 DME-MS45.1] : 87 that's the outlier, unless these are the M car values.
Kayger12 [2005 3.0L M54 DME-MS45.1] : 95
RITmusic2k [2004 3.0L M54 DME-MS45.1] : 83 T-stat work ongoing
terraphantm [2003 3.0L M54 DME-MS45.1] : 95
Hermes: [xxxx 3.0L M54 DME-MS45.1] = 95 provide year please

[Oli77]

The blue line, radiator outlet temp, doesn't start to rise until the engine temp hits 180F indicating coolant is flowing through the radiator to the lower hose.
It could be opening a little before 180F, and it takes until 180F for the pump to circulate coolant equal to the volume in the radiator.


OK totally see that now. Thanks, clear as a bell. ~180 F

[Hermes]

Numbers are in Celsius, once plateau is reached.

Oli77 [2005 2.5L M54 DME-MS45.1] : 96
Danewilson77 [2004 3.0L M54 DME-MS45.1] : 95
Telijah [2001 3.0L M54 DME-MS43] : 88 (suspects open T-stat)
edlvrt [2004 3.0L M54 DME-MS45.1] : 96
MrMaico [2004 3.0L M54 DME-MS45.1]: 96
Spencers [2001 2.5L M54 DME-MS43] : 90
LivesNearCostco [2003 3.0L M54 DME-MS45.1] : 91 (old T-stat)
LivesNearCostco [2003 3.0L M54 DME-MS45.1] : 95 (new T-stat)
derbo [2004 3.0L M54 DME-MS45.1] : 95
GT172I [2004 3.0L M54 DME-MS45.1] : 96
shanneba [2003 3.0L M54 DME-MS43] : 89 (running water wetter and stewart pump)
Hochspannung [2005 3.0L M54 DME-MS45.1] : 87 that's the outlier, unless these are the M car values.
Kayger12 [2005 3.0L M54 DME-MS45.1] : 95
RITmusic2k [2004 3.0L M54 DME-MS45.1] : 83 T-stat work ongoing
terraphantm [2003 3.0L M54 DME-MS45.1] : 95
Hermes: [2005 3.0L M54 DME-MS45.1] = 95

[MrMaico]

OK totally see that now. Thanks, clear as a bell. ~180 F


But that's an MS43 DME. The post 3/2003 MS45.1 (ZHP etc.) opens at 95 or 96 degrees.

[MrMaico]

I'm not sure what conditions makes it do so though

During harder running, higher revs, the DME turns on the stat heater to open it at lower temps. I see my temp drop 10 to 15 degrees F every time I run through a few gears at revs above 5000 or so.

[shanneba]

I believe the actual thermostat part number is the same for all the M54 engines. So they should have the exact same opening temp without the ECM influence since they are physically the same. The "opening" would be controlled by the actual thermostat same as any other normal thermostat.

There may be a difference in the programmed "additional" opening of the thermostat by the DME between the ECMs. This is controlled primarily by engine load and speed. I think of our thermostat as being two stage, one normal operation and the second stage with the "heating" from the application of +12 volts to the thermostat.

I might be interesting if someone has a thermostat, to do a video of it opening when +12 volts is applied.

[shanneba]

During harder running, higher revs, the DME turns on the stat heater to open it at lower temps. I see my temp drop 10 to 15 degrees F every time I run through a few gears at revs above 5000 or so.

http://wds.spaghetticoder.org/en/zinfo/HEL0498FB1214_M0KFK.htm

This characteristic map thermostat is controlled by the engine control unit dependent on a characteristic map.
This characteristic map is determined by the following factors:
Engine load
Engine speed
Vehicle speed
Intake temperature
Coolant temperature

[MrMaico]

I might be interesting if someone has a thermostat, to do a video of it opening when +12 volts is applied.

I have my old one and I also have a battery sitting around. Might have to give that a try and see what happens.

[RITmusic2k]

... OBC displays 95C when moving (occasional 96C) and moves between 96-99C when stopped or in traffic... New T-stat is Wahler with 10 miles on it

Hmm. So, I went to my favorite parts supply website and I looked up the Wahler replacement for our cars. They returned part number 11 53 7 509 227 and there was a product note "79 degrees Celcius". I wonder if my car was accidentally fitted with an incorrect unit.

Costco, can you check on what the part number was for the Wahler unit you ordered?

Also, how bad of a job was it to do the swap? I'm thinking I'll be doing mine sooner than later...

[danewilson77]

T-Stat swap is simple.

[LivesNearCostco]

It was indeed simple; was my 3rd swap. Have to remove fan but don't have to remove the belts, though I did to try to reduce how much spilled coolant got on them. Removed plastic undertray to drain the ET, and spilled some coolant from the lower radiator hose. I partially drained the ET and upper radiator hose was fairly empty but maybe I didn't drain it enough.

I got the Wahler from ECS Tuning almost a year ago, which today calls it part #11537509227, but that's the same part # for BMW, Behr, and Wahler T-stats. ECS catalog ES#:10944. AutoZone web site says their DuraLast t-stat for our cars opens at 206F. O'reilly sells a Murray at 206F or a Beck-Arnley at 97C. Pretty sure all the Rock Auto T-stats for the E46 non-M were for 97C, 80C for the M3.

[Oli77]

Numbers are in Celsius, once plateau is reached.

Oli77 [2005 2.5L M54 DME-MS45.1] : 96
Danewilson77 [2004 3.0L M54 DME-MS45.1] : 95
Telijah [2001 3.0L M54 DME-MS43] : 88 (suspects open T-stat)
edlvrt [2004 3.0L M54 DME-MS45.1] : 96
MrMaico [2004 3.0L M54 DME-MS45.1]: 96
Spencers [2001 2.5L M54 DME-MS43] : 90
LivesNearCostco [2003 3.0L M54 DME-MS45.1] : 91 (old T-stat)
LivesNearCostco [2003 3.0L M54 DME-MS45.1] : 95 (new T-stat)
derbo [2004 3.0L M54 DME-MS45.1] : 95
GT172I [2004 3.0L M54 DME-MS45.1] : 96
shanneba [2003 3.0L M54 DME-MS43] : 89 (running water wetter and stewart pump)
Hochspannung [2005 3.0L M54 DME-MS45.1] : 87 that's the outlier, unless these are the M car values.
Kayger12 [2005 3.0L M54 DME-MS45.1] : 95
RITmusic2k [2004 3.0L M54 DME-MS45.1] : 83 T-stat work ongoing
terraphantm [2003 3.0L M54 DME-MS45.1] : 95
Hermes: [2005 3.0L M54 DME-MS45.1] = 95
328ioc: [2005 3.0L M54 DME-MS45.1] = 95

[LivesNearCostco]

Since changing out my thermostat, I think my gas mileage has improved between 0.5 and 1 mpg. I'm guessing it provides a bigger benefit in freeway driving when my temps formerly hovered in the 70's (Celsius).

Is there a hidden OBC function to show oil temps? I'd like to monitor those sometime.

[danewilson77]

All the codes are toward the end of the initial post. I didn't see oil temp.

http://www.zhpmafia.com/forums/showthread.php?1830-BMW-E46-ZHP-DIY-and-Preventative-maintenance

[LivesNearCostco]

Hmmm... I could have sworn there is an oil temp sender plugged into the oil filter housing along with an oil pressure sender. Thought I read somewhere that some devices can read oil temp and pressure via the OBDII port.

[danewilson77]

Maybe via OBD, but not on OBC.

[WOLFN8TR]

My 2003 is 02/2003 production with the MS43 DME.
Original thermostat.
Stewart pump, standard pullies.
Red Line water wetter / 50/50 BMW coolant.
Dinan Stage 2 software
Auto trans

Oli- Good idea by the way.

I think we should list important info like shanneba did above. There are several factors that could affect the temp reading. Such as:

-Water wetter
-Ambient air temp
-Radiator-Stock or aftermarket
-Water pump- Stock or Stewart etc.
-Pulleys- Stock or Under driven
-Electric fan- Manual
-Manual fan- Auto
-Tstat- OEM or Alum etc.

I will test mine later and post the info.




Sent from my 1982 Commodore 64.

[terraphantm]

They can - all E46s have the same oil temp sensor as the e46 m3. But the cluster doesn't report it in the non-M cars. You can read it through the OBD2 port though.

I don't think oil pressure can be read

[SoCalZman]

so what is the ideal operating temp for the ZHP? 95 degrees C?

[WOLFN8TR]

WOLFN8TR: 90

Stock everything except ESC Aluminum water pump pulley. Outside air temp 84.


Sent from my 1982 Commodore 64.

[Oli77]

Numbers are in Celsius, once plateau is reached.

Oli77 [2005 2.5L M54 DME-MS45.1] : 96
Danewilson77 [2004 3.0L M54 DME-MS45.1] : 95
Telijah [2001 3.0L M54 DME-MS43] : 88 (suspects open T-stat)
edlvrt [2004 3.0L M54 DME-MS45.1] : 96
MrMaico [2004 3.0L M54 DME-MS45.1]: 96
Spencers [2001 2.5L M54 DME-MS43] : 90
LivesNearCostco [2003 3.0L M54 DME-MS45.1] : 91 (old T-stat)
LivesNearCostco [2003 3.0L M54 DME-MS45.1] : 95 (new T-stat)
derbo [2004 3.0L M54 DME-MS45.1] : 95
GT172I [2004 3.0L M54 DME-MS45.1] : 96
shanneba [2003 3.0L M54 DME-MS43] : 89 (running water wetter and stewart pump)
Hochspannung [2005 3.0L M54 DME-MS45.1] : 87 that's the outlier, unless these are the M car values.
Kayger12 [2005 3.0L M54 DME-MS45.1] : 95
RITmusic2k [2004 3.0L M54 DME-MS45.1] : 83 T-stat work ongoing
terraphantm [2003 3.0L M54 DME-MS45.1] : 95
Hermes: [2005 3.0L M54 DME-MS45.1] = 95
328ioc: [2005 3.0L M54 DME-MS45.1] = 95
WOLFN8TR:[2005 3.0L M54 DME-MS45.1] = 90

Thanks for the data point Woln8tr.

Looks like you and Hochspannung are on the low side (for 3 L engine running mostly stock).

Thanks BTW.

Now we need ritmusik2K and telijah to report updates.

More people answer this, moar data...

[Pip]

3940
Moar data.


Sent from my iPhone using Tapatalk

[Oli77]

Numbers are in Celsius, once plateau is reached.

Oli77 [2005 2.5L M54 DME-MS45.1] : 96
Danewilson77 [2004 3.0L M54 DME-MS45.1] : 95
Telijah [2001 3.0L M54 DME-MS43] : 88 (suspects open T-stat)
edlvrt [2004 3.0L M54 DME-MS45.1] : 96
MrMaico [2004 3.0L M54 DME-MS45.1]: 96
Spencers [2001 2.5L M54 DME-MS43] : 90
LivesNearCostco [2003 3.0L M54 DME-MS45.1] : 91 (old T-stat)
LivesNearCostco [2003 3.0L M54 DME-MS45.1] : 95 (new T-stat)
derbo [2004 3.0L M54 DME-MS45.1] : 95
GT172I [2004 3.0L M54 DME-MS45.1] : 96
shanneba [2003 3.0L M54 DME-MS43] : 89 (running water wetter and stewart pump)
Hochspannung [2005 3.0L M54 DME-MS45.1] : 87 that's the outlier, unless these are the M car values.
Kayger12 [2005 3.0L M54 DME-MS45.1] : 95
RITmusic2k [2004 3.0L M54 DME-MS45.1] : 83 T-stat work ongoing
terraphantm [2003 3.0L M54 DME-MS45.1] : 95
Hermes: [2005 3.0L M54 DME-MS45.1] = 95
328ioc: [2005 3.0L M54 DME-MS45.1] = 95
WOLFN8TR:[2005 3.0L M54 DME-MS45.1] = 90
pip: [2005 3.0L M54 DME-MS45.1] = 97

Thanks Pip, Keep'em comin'

[danewilson77]

That's a high!

Sent from SIGFest USA

[Pip]

That's a high!

Sent from SIGFest USA

I agree :( Stock everything, but I'm thinking of doing a drain/fill of the coolant since it most likely hasn't been done in a long while. Think it'll help??

[danewilson77]

I think a new T-Stat would help.

[johnrando]

Numbers are in Celsius, once plateau is reached.

Oli77 [2005 2.5L M54 DME-MS45.1] : 96
Danewilson77 [2004 3.0L M54 DME-MS45.1] : 95
Telijah [2001 3.0L M54 DME-MS43] : 88 (suspects open T-stat)
edlvrt [2004 3.0L M54 DME-MS45.1] : 96
MrMaico [2004 3.0L M54 DME-MS45.1]: 96
Spencers [2001 2.5L M54 DME-MS43] : 90
LivesNearCostco [2003 3.0L M54 DME-MS45.1] : 91 (old T-stat)
LivesNearCostco [2003 3.0L M54 DME-MS45.1] : 95 (new T-stat)
derbo [2004 3.0L M54 DME-MS45.1] : 95
GT172I [2004 3.0L M54 DME-MS45.1] : 96
shanneba [2003 3.0L M54 DME-MS43] : 89 (running water wetter and stewart pump)
Hochspannung [2005 3.0L M54 DME-MS45.1] : 87 that's the outlier, unless these are the M car values.
Kayger12 [2005 3.0L M54 DME-MS45.1] : 95
RITmusic2k [2004 3.0L M54 DME-MS45.1] : 83 T-stat work ongoing
terraphantm [2003 3.0L M54 DME-MS45.1] : 95
Hermes: [2005 3.0L M54 DME-MS45.1] = 95
328ioc: [2005 3.0L M54 DME-MS45.1] = 95
WOLFN8TR:[2005 3.0L M54 DME-MS45.1] = 90
pip: [2005 3.0L M54 DME-MS45.1] = 97
johnrando: [2006 3.0L M54 DME-MS45.1] = 94

Thanks Pip, Keep'em comin'

added mine

[Oli77]

Numbers are in Celsius, once plateau is reached.

Oli77 [2005 2.5L M54 DME-MS45.1] : 96
Danewilson77 [2004 3.0L M54 DME-MS45.1] : 95
Telijah [2001 3.0L M54 DME-MS43] : 88 (suspects open T-stat)
edlvrt [2004 3.0L M54 DME-MS45.1] : 96
MrMaico [2004 3.0L M54 DME-MS45.1]: 96
Spencers [2001 2.5L M54 DME-MS43] : 90
LivesNearCostco [2003 3.0L M54 DME-MS45.1] : 91 (old T-stat)
LivesNearCostco [2003 3.0L M54 DME-MS45.1] : 95 (new T-stat)
derbo [2004 3.0L M54 DME-MS45.1] : 95
GT172I [2004 3.0L M54 DME-MS45.1] : 96
shanneba [2003 3.0L M54 DME-MS43] : 89 (running water wetter and stewart pump)
Hochspannung [2005 3.0L M54 DME-MS45.1] : 87 that's the outlier, unless these are the M car values.
Kayger12 [2005 3.0L M54 DME-MS45.1] : 95
RITmusic2k [2004 3.0L M54 DME-MS45.1] : 83 T-stat work ongoing
terraphantm [2003 3.0L M54 DME-MS45.1] : 95
Hermes: [2005 3.0L M54 DME-MS45.1] = 95
328ioc: [2005 3.0L M54 DME-MS45.1] = 95
WOLFN8TR:[2005 3.0L M54 DME-MS45.1] = 90
pip: [2005 3.0L M54 DME-MS45.1] = 97
Johnrando: [2006 3.0L M54 DME-MS45.1] = 94


Not so sure Pip is that far off the norm.

[danewilson77]

Not so sure Pip is that far off the norm.

Yeah. You're right. I was comparing him to the 90 above.

Sent from SIGFest USA

[MrMaico]

Ya, I wouldn't be at all concerned about 97 degrees PIP.

[RITmusic2k]

I still haven't had the opportunity to do any work - honestly I don't expect to have the chance any time soon. But I do have updated numbers to provide - checked again yesterday on a whim. It was a colder day than the first time I tested, and I wasn't driving quite as spiritedly as I was before, but my temp got up to 87°C at a stop light. As soon as I started moving again it dropped back to 85 or so, but it's still marginally better than it was last time.

[Meric]

98 still with coolant leak.

[Nivo]

Mine is at 95, 65mph on highway in 6th gear is goes to 93. 2004 6MT

[WOLFN8TR]

Ok here is something weird, since doing this my gas door will not stay shut. WTF!

3998

Apparently when I got to 19.0 I hit the "Unlock" functions in range 3-8 but can't get it to go back.

HELP......


Hold Trip Reset while turning ignition key to on position
OBC should show "Test"
Use Trip Reset to select function 19.0 that unlocks all the features
Wait for display to show "Off"
Depress Trip Reset for 1/4 second and release it
With no delay press Trip Reset several times to select one of the following function s
BMW E46 On-Board Computer (OBC) Hidden Codes
nr example description
1 Car Engine and cluster data
1.0 46nnn Chassis nr/VIN serial number (last 5 digits)
1.1 4nnn K-number
1.2 690236 Cluster Part #
1.3 045210 Coding (04)/diagnosis (52)/bus index (10)
1.4 1200 Week (12)/year of manufacture (2000)
1.5 09_160 Hardware (09) and software # (16.0) of cluster
1.6 Not used
1.7 04__44 CAN-version (04) KI-revision index (44)
2 (test) Cluster System Test - Activates the gauge drivers,
indicators and LEDs to confirm function
3 SI Data
3.0 1098 Used fuel in liters since last SI (Service Inspection)
3.1 0231 Periodic inspection days; elapsed days (since last SI)
4 Momentary Consumption
4.0 0145+ Instant fuel consumption - 0145=14.5 liters/100km
4.1 0018 Instant fuel consumption - 0018=1.8 l/Hour
5 Distance Gone Consumption
5.0 082 Average mileage; 082=8.2 liters/100km
5.1 0536 Calc. km to refuel (momentary distance to go)
6 Fuel Level sensor inputs in liters
6.0 109330+ Fuel level averaged; Left half sensor input=10.9 liters; Right sensor input=33.0 liters
6.1 0439+ Total tank level averaged; vlgs 6.0: 10.9+33.0=43.9 liters
6.2 0442+ Indicated value (44.2) and tank phase
7 Temperature and Speed
7.0 021+ Coolant/Engine temperature (2.1C)
7.1 130 Ambient/Outside temperature - chg met 5 pts. 125/130/135
7.2 + Engine speed / Current RPMs 1/min
7.3 + Vehicle speed / Current Speed in km/hour
8 Input value in HEX form
8.0 1d0+ System voltage ADC-Value Hex code
8.1 26C33C+ ADC Values HG left/HG right
8.2 0000 ADC Value brake degradation sensor (000=o.k.)
8.3 18C ADC Value outside temperature
9 Battery
9.0 140 Battery Voltage - 140 = UB 14.0v
9.1 242013+?
9.2 074_78+?
9.3 0011+?
10 Not used
11 Not used
12 Not used
13 GonG Gong Test
14 Not used
15 Status cluster I/O-ports (bit codes) 0=low; 1=high
1st-belt contact, seat belt fastened=0; 2) ignition lock contact, key inserted=0; 3) door contact, door open=0; 4) clock button pressed=0; 5) SI reset=0, for reset=0; 6) EGS transmission failure=0
Status Digital Outputs (bits) 0=inactive, 1=active
1) Gong output; 2) Brake warning lamp; 3) Low fuel warning lamp; 4) EGA lamp; 5) seat belt lamp; 6) manipulation dot
16 Not used
17 Not used
18 Not used
19 Lock Status; unlocks functions in range 3-18
19.0 L-On/L-Off Unlock: press button when "L-Off"
20 Not used
21 Software Reset; reset OBC settings
00 End of test!

[Oli77]

^ + 1, New mod! Causes a nice rooster tail when going >500 mph!

[Oli77]

Numbers are in Celsius, once plateau is reached.

Oli77 [2005 2.5L M54 DME-MS45.1] : 96
Danewilson77 [2004 3.0L M54 DME-MS45.1] : 95
Telijah [2001 3.0L M54 DME-MS43] : 88 (suspects open T-stat)
edlvrt [2004 3.0L M54 DME-MS45.1] : 96
MrMaico [2004 3.0L M54 DME-MS45.1]: 96
Spencers [2001 2.5L M54 DME-MS43] : 90
LivesNearCostco [2003 3.0L M54 DME-MS45.1] : 91 (old T-stat)
LivesNearCostco [2003 3.0L M54 DME-MS45.1] : 95 (new T-stat)
derbo [2004 3.0L M54 DME-MS45.1] : 95
GT172I [2004 3.0L M54 DME-MS45.1] : 96
shanneba [2003 3.0L M54 DME-MS43] : 89 (running water wetter and stewart pump)
Hochspannung [2005 3.0L M54 DME-MS45.1] : 87 that's the outlier, unless these are the M car values.
Kayger12 [2005 3.0L M54 DME-MS45.1] : 95
RITmusic2k [2004 3.0L M54 DME-MS45.1] : 83 T-stat work ongoing
terraphantm [2003 3.0L M54 DME-MS45.1] : 95
Hermes: [2005 3.0L M54 DME-MS45.1] = 95
328ioc: [2005 3.0L M54 DME-MS45.1] = 95
WOLFN8TR:[2005 3.0L M54 DME-MS45.1] = 90
pip: [2005 3.0L M54 DME-MS45.1] = 97
Johnrando: [2006 3.0L M54 DME-MS45.1] = 94
Meric: [2004 3.0L M54 DME-MS45.1] = 98
Nivo: [2004 3.0L M54 DME-MS45.1] = 95

[Oli77]

Bump for newcomers.

Wolf, did you gas door start to behave eventually?

[WOLFN8TR]

Bump for newcomers.

Wolf, did you gas door start to behave eventually?

Ya it's all good now. Just needed lubed was all.

[SoCalZman]

High of 95 cel. At 65mph on a 98 degree (f) day. Would drop down to 93 or 92 sometimes but seemed to really like 94 the most.

[Oli77]

Numbers are in Celsius, once plateau is reached.

Oli77 [2005 2.5L M54 DME-MS45.1] : 96
Danewilson77 [2004 3.0L M54 DME-MS45.1] : 95
Telijah [2001 3.0L M54 DME-MS43] : 88 (suspects open T-stat)
edlvrt [2004 3.0L M54 DME-MS45.1] : 96
MrMaico [2004 3.0L M54 DME-MS45.1]: 96
Spencers [2001 2.5L M54 DME-MS43] : 90
LivesNearCostco [2003 3.0L M54 DME-MS45.1] : 91 (old T-stat)
LivesNearCostco [2003 3.0L M54 DME-MS45.1] : 95 (new T-stat)
derbo [2004 3.0L M54 DME-MS45.1] : 95
GT172I [2004 3.0L M54 DME-MS45.1] : 96
shanneba [2003 3.0L M54 DME-MS43] : 89 (running water wetter and stewart pump)
Hochspannung [2005 3.0L M54 DME-MS45.1] : 87 that's the outlier, unless these are the M car values.
Kayger12 [2005 3.0L M54 DME-MS45.1] : 95
RITmusic2k [2004 3.0L M54 DME-MS45.1] : 83 T-stat work ongoing
terraphantm [2003 3.0L M54 DME-MS45.1] : 95
Hermes: [2005 3.0L M54 DME-MS45.1] = 95
328ioc: [2005 3.0L M54 DME-MS45.1] = 95
WOLFN8TR:[2005 3.0L M54 DME-MS45.1] = 90
pip: [2005 3.0L M54 DME-MS45.1] = 97
Johnrando: [2006 3.0L M54 DME-MS45.1] = 94
Meric: [2004 3.0L M54 DME-MS45.1] = 98
Nivo: [2004 3.0L M54 DME-MS45.1] = 95
NorCalZman: [2005 3.0L M54 DME-MS45.1] = 94

[Blaster3500]

Just checked mine tonight almost ran a stop sign and managed to reset my odometer but then got it figured out. It fluctuates a little but 95 most of the time

[danewilson77]

Bump

[Oli77]

Feel like a bump.

[SoCalZman]

I had some odd behavior recently. I was stuck in stop and go 5mph traffic for over and hour last weekend. Also, It was really hot outside. Randomly my temp dropped down to the low to mid 80s and stayed there until I sped up. Then when I hit stop and go again for awhile it dropped down again. I have not ever been in traffic like this before so I wonder if this is programmed behavior if some part of the engine is getting too hot? My entire cooling system is brand new (except the sensor in the lower hose. I reused that).

[hgrunt]

I had some odd behavior recently. I was stuck in stop and go 5mph traffic for over and hour last weekend. Also, It was really hot outside. Randomly my temp dropped down to the low to mid 80s and stayed there until I sped up. Then when I hit stop and go again for awhile it dropped down again. I have not ever been in traffic like this before so I wonder if this is programmed behavior if some part of the engine is getting too hot? My entire cooling system is brand new (except the sensor in the lower hose. I reused that).

This is normal behavior and partly why BMW makes the needle sit in one spot from 75C-113C. The engine normally runs around 96-98C for maximum efficiency. To avoid overheating if the engine load suddenly increases, the DME can activate a heating element on the thermostat (that connector on top of it) to increase coolant flow. The FSM has a detailed explanation on the Characteristic Map Thermostat, and it's behaviors.

In the conditions you were driving it in, chances are it was either creeping past the activation threshold, or the load on the engine changed while it was at operating temperature. It takes my car a few seconds for the temp to drop, so that's probably why it seems random. When I was driving around in Palm Springs in the summer, the car would drop from 96-98C to high 80C whenever I stopped and started moving again.

If you want to watch it work, try this: Drive at a steady speed on the freeway once the temp is stable. Floor it for a few seconds in 6th and you should see the temperature drop. After some more steady cruising, it should creep back up to normal.

[az3579]

This is normal behavior and partly why BMW makes the needle sit in one spot from 75C-113C. The engine normally runs around 96-98C for maximum efficiency. To avoid overheating if the engine load suddenly increases, the DME can activate a heating element on the thermostat (that connector on top of it) to increase coolant flow. The FSM has a detailed explanation on the Characteristic Map Thermostat, and it's behaviors.

Yes, this is why the needle on the gauge doesn't move but the OBC shows correct temperature.




If you want to watch it work, try this: Drive at a steady speed on the freeway once the temp is stable. Floor it for a few seconds in 6th and you should see the temperature drop. After some more steady cruising, it should creep back up to normal.

Since I've corrected my temperature gauge to show actual temp (middle is between 90-100deg C), I see this behavior often when I downshift to third and let it rip. Whenever the speeds are elevated and the RPMs go up, the temperature drops. On the track my needle will go down as far as the 1/4 mark sometimes (the line before the middle), then it'll go back up to middle once I'm at a steady speed or back in the paddock.

I still don't think BMW should program it to show 75-110 in the middle. They should have just advised owners that it would fluctuate depending on load and temperature. Of course, this doesn't matter anymore since everything is electronic and there no longer are coolant temperature gauges in the new BMWs.

[ELCID86]

This is normal behavior and partly why BMW makes the needle sit in one spot from 75C-113C. The engine normally runs around 96-98C for maximum efficiency. To avoid overheating if the engine load suddenly increases, the DME can activate a heating element on the thermostat (that connector on top of it) to increase coolant flow. The FSM has a detailed explanation on the Characteristic Map Thermostat, and it's behaviors.

In the conditions you were driving it in, chances are it was either creeping past the activation threshold, or the load on the engine changed while it was at operating temperature. It takes my car a few seconds for the temp to drop, so that's probably why it seems random. When I was driving around in Palm Springs in the summer, the car would drop from 96-98C to high 80C whenever I stopped and started moving again.

If you want to watch it work, try this: Drive at a steady speed on the freeway once the temp is stable. Floor it for a few seconds in 6th and you should see the temperature drop. After some more steady cruising, it should creep back up to normal.
And Welcome H- Grunt!

[johnrando]

And Welcome H- Grunt!

Not sure if you have or not Hgrunt, but please introduce yourself and your car in our New Members Section. And, welcome!

[OtterEffect]

Finally did this.

OtterEffect: [2003 3.0L M54 DME-MS45.1] = 93

[alexandre]

Does this count? :biggrin

2003 MS45.1, -5°C. That's what you call a cold start.

16855

[Whammy]

Whammy [2003 3.0L M54 DME-MS45.1] : 96

Taken from Torque.

[Oli77]

Numbers are in Celsius, once plateau is reached.

Oli77 [2005 2.5L M54 DME-MS45.1] : 96
Danewilson77 [2004 3.0L M54 DME-MS45.1] : 95
Telijah [2001 3.0L M54 DME-MS43] : 88 (suspects open T-stat)
edlvrt [2004 3.0L M54 DME-MS45.1] : 96
MrMaico [2004 3.0L M54 DME-MS45.1]: 96
Spencers [2001 2.5L M54 DME-MS43] : 90
LivesNearCostco [2003 3.0L M54 DME-MS45.1] : 91 (old T-stat)
LivesNearCostco [2003 3.0L M54 DME-MS45.1] : 95 (new T-stat)
derbo [2004 3.0L M54 DME-MS45.1] : 95
GT172I [2004 3.0L M54 DME-MS45.1] : 96
shanneba [2003 3.0L M54 DME-MS43] : 89 (running water wetter and stewart pump)
Hochspannung [2005 3.0L M54 DME-MS45.1] : 87 that's the outlier, unless these are the M car values.
Kayger12 [2005 3.0L M54 DME-MS45.1] : 95
RITmusic2k [2004 3.0L M54 DME-MS45.1] : 83 T-stat work ongoing
terraphantm [2003 3.0L M54 DME-MS45.1] : 95
Hermes: [2005 3.0L M54 DME-MS45.1] = 95
328ioc: [2005 3.0L M54 DME-MS45.1] = 95
WOLFN8TR:[2005 3.0L M54 DME-MS45.1] = 90
pip: [2005 3.0L M54 DME-MS45.1] = 97
Johnrando: [2006 3.0L M54 DME-MS45.1] = 94
Meric: [2004 3.0L M54 DME-MS45.1] = 98
Nivo: [2004 3.0L M54 DME-MS45.1] = 95
NorCalZman: [2005 3.0L M54 DME-MS45.1] = 94
Blaster3500: [2007 335i ? dudes in the know can fill this in please] = 95
OtterEffect: [2003 3.0L M54 DME-MS45.1] = 93
Whammy [2003 3.0L M54 DME-MS45.1] : 96

Keeping it clean.

[Oli77]

Does this count? :biggrin

2003 MS45.1, -5°C. That's what you call a cold start.

16855

Gawd!

[RITmusic2k]

I FINALLY got my cooling system overhauled and the new thermostat installed. Sure enough, she's operating exactly as she should now... I'm seeing temperatures snap up to 95º within minutes and then it stays right there. I've already noticed my city MPG has gone up by a good 2MPG.

[Oli77]

Hi Riker! Good to see you in the old temperature thread. And thanks for the bump!

[johnrando]

Welcome back. How's the NW treating you? Good to hear your car's running well.

[RITmusic2k]

Things have been super busy this year! Tiff and I got married at the end of June, but she had to stay in SoCal to finish classes... she's actually moving up this week; will be in town permanently as of tomorrow!

But yeah, the car is happy and healthy after a whole slew of gremlins had to be dealt with... there are still a couple things left to do but all in all she's strong and still pretty! Hope all's well down in the old stompin' grounds!

[BMWCurves]

I didn't check the software number but it flittered between 97 and 98:

http://i.imgur.com/szlCa9J.jpg

[johnrando]

Good to hear Kevin.

sent from mobile device

[stephenkirsh]

I guess I'll get in on this thread now.

Under heavy load (track conditions) or when it's really hot outside, my coolant goes as low as 85 and as high as 105.


21145

[bshovers]

Mine goes up to 98 at first then drops to about 92, 93, and as low as 87 under acceleration

[Vas]

Numbers are in Celsius, once plateau is reached.

Oli77 [2005 2.5L M54 DME-MS45.1] : 96
Danewilson77 [2004 3.0L M54 DME-MS45.1] : 95
Telijah [2001 3.0L M54 DME-MS43] : 88 (suspects open T-stat)
edlvrt [2004 3.0L M54 DME-MS45.1] : 96
MrMaico [2004 3.0L M54 DME-MS45.1]: 96
Spencers [2001 2.5L M54 DME-MS43] : 90
LivesNearCostco [2003 3.0L M54 DME-MS45.1] : 91 (old T-stat)
LivesNearCostco [2003 3.0L M54 DME-MS45.1] : 95 (new T-stat)
derbo [2004 3.0L M54 DME-MS45.1] : 95
GT172I [2004 3.0L M54 DME-MS45.1] : 96
shanneba [2003 3.0L M54 DME-MS43] : 89 (running water wetter and stewart pump)
Hochspannung [2005 3.0L M54 DME-MS45.1] : 87 that's the outlier, unless these are the M car values.
Kayger12 [2005 3.0L M54 DME-MS45.1] : 95
RITmusic2k [2004 3.0L M54 DME-MS45.1] : 83 T-stat work ongoing
terraphantm [2003 3.0L M54 DME-MS45.1] : 95
Hermes: [2005 3.0L M54 DME-MS45.1] = 95
328ioc: [2005 3.0L M54 DME-MS45.1] = 95
WOLFN8TR:[2005 3.0L M54 DME-MS45.1] = 90
pip: [2005 3.0L M54 DME-MS45.1] = 97
Johnrando: [2006 3.0L M54 DME-MS45.1] = 94
Meric: [2004 3.0L M54 DME-MS45.1] = 98
Nivo: [2004 3.0L M54 DME-MS45.1] = 95
NorCalZman: [2005 3.0L M54 DME-MS45.1] = 94
Blaster3500: [2007 335i ? dudes in the know can fill this in please] = 95
OtterEffect: [2003 3.0L M54 DME-MS45.1] = 93
Whammy [2003 3.0L M54 DME-MS45.1] : 96
Vas [2004 3.0L M54 DME-MS45.1] : 94

Keeping it clean.

[BMWCurves]

I run hot apparently, my low-load, constant speed temp is around 98C.

[Jconlin16]

Numbers are in Celsius, once plateau is reached.

Oli77 [2005 2.5L M54 DME-MS45.1] : 96
Danewilson77 [2004 3.0L M54 DME-MS45.1] : 95
Telijah [2001 3.0L M54 DME-MS43] : 88 (suspects open T-stat)
edlvrt [2004 3.0L M54 DME-MS45.1] : 96
MrMaico [2004 3.0L M54 DME-MS45.1]: 96
Spencers [2001 2.5L M54 DME-MS43] : 90
LivesNearCostco [2003 3.0L M54 DME-MS45.1] : 91 (old T-stat)
LivesNearCostco [2003 3.0L M54 DME-MS45.1] : 95 (new T-stat)
derbo [2004 3.0L M54 DME-MS45.1] : 95
GT172I [2004 3.0L M54 DME-MS45.1] : 96
shanneba [2003 3.0L M54 DME-MS43] : 89 (running water wetter and stewart pump)
Hochspannung [2005 3.0L M54 DME-MS45.1] : 87 that's the outlier, unless these are the M car values.
Kayger12 [2005 3.0L M54 DME-MS45.1] : 95
RITmusic2k [2004 3.0L M54 DME-MS45.1] : 83 T-stat work ongoing
terraphantm [2003 3.0L M54 DME-MS45.1] : 95
Hermes: [2005 3.0L M54 DME-MS45.1] = 95
328ioc: [2005 3.0L M54 DME-MS45.1] = 95
WOLFN8TR:[2005 3.0L M54 DME-MS45.1] = 90
pip: [2005 3.0L M54 DME-MS45.1] = 97
Johnrando: [2006 3.0L M54 DME-MS45.1] = 94
Meric: [2004 3.0L M54 DME-MS45.1] = 98
Nivo: [2004 3.0L M54 DME-MS45.1] = 95
NorCalZman: [2005 3.0L M54 DME-MS45.1] = 94
Blaster3500: [2007 335i ? dudes in the know can fill this in please] = 95
OtterEffect: [2003 3.0L M54 DME-MS45.1] = 93
Whammy [2003 3.0L M54 DME-MS45.1] : 96
Vas [2004 3.0L M54 DME-MS45.1] : 94
Jconlin16 [2003 3.0L M54 DME-MS45.1] = 93

[Oli77]

Numbers are in Celsius, once plateau is reached.

Oli77 [2005 2.5L M54 DME-MS45.1] : 96. Went to 93 after setting up the Stewart water pump.
Danewilson77 [2004 3.0L M54 DME-MS45.1] : 95
Telijah [2001 3.0L M54 DME-MS43] : 88 (suspects open T-stat)
edlvrt [2004 3.0L M54 DME-MS45.1] : 96
MrMaico [2004 3.0L M54 DME-MS45.1]: 96
Spencers [2001 2.5L M54 DME-MS43] : 90
LivesNearCostco [2003 3.0L M54 DME-MS45.1] : 91 (old T-stat)
LivesNearCostco [2003 3.0L M54 DME-MS45.1] : 95 (new T-stat)
derbo [2004 3.0L M54 DME-MS45.1] : 95
GT172I [2004 3.0L M54 DME-MS45.1] : 96
shanneba [2003 3.0L M54 DME-MS43] : 89 (running water wetter and stewart pump)
Hochspannung [2005 3.0L M54 DME-MS45.1] : 87 that's the outlier, unless these are the M car values.
Kayger12 [2005 3.0L M54 DME-MS45.1] : 95
RITmusic2k [2004 3.0L M54 DME-MS45.1] : 83 T-stat work ongoing
terraphantm [2003 3.0L M54 DME-MS45.1] : 95
Hermes: [2005 3.0L M54 DME-MS45.1] = 95
328ioc: [2005 3.0L M54 DME-MS45.1] = 95
WOLFN8TR:[2005 3.0L M54 DME-MS45.1] = 90
pip: [2005 3.0L M54 DME-MS45.1] = 97
Johnrando: [2006 3.0L M54 DME-MS45.1] = 94
Meric: [2004 3.0L M54 DME-MS45.1] = 98
Nivo: [2004 3.0L M54 DME-MS45.1] = 95
NorCalZman: [2005 3.0L M54 DME-MS45.1] = 94
Blaster3500: [2007 335i ? dudes in the know can fill this in please] = 95
OtterEffect: [2003 3.0L M54 DME-MS45.1] = 93
Whammy [2003 3.0L M54 DME-MS45.1] : 96
Vas [2004 3.0L M54 DME-MS45.1] : 94
Jconlin16 [2003 3.0L M54 DME-MS45.1] = 93
BMWCurves [2003 3.0L M54 DME-MS45.1] = 98

[ELCID86]

Numbers are in Celsius, once plateau is reached.

Oli77 [2005 2.5L M54 DME-MS45.1] : 96. Went to 93 after setting up the Stewart water pump.
Danewilson77 [2004 3.0L M54 DME-MS45.1] : 95
Telijah [2001 3.0L M54 DME-MS43] : 88 (suspects open T-stat)
edlvrt [2004 3.0L M54 DME-MS45.1] : 96
MrMaico [2004 3.0L M54 DME-MS45.1]: 96
Spencers [2001 2.5L M54 DME-MS43] : 90
LivesNearCostco [2003 3.0L M54 DME-MS45.1] : 91 (old T-stat)
LivesNearCostco [2003 3.0L M54 DME-MS45.1] : 95 (new T-stat)
derbo [2004 3.0L M54 DME-MS45.1] : 95
GT172I [2004 3.0L M54 DME-MS45.1] : 96
shanneba [2003 3.0L M54 DME-MS43] : 89 (running water wetter and stewart pump)
Hochspannung [2005 3.0L M54 DME-MS45.1] : 87 that's the outlier, unless these are the M car values.
Kayger12 [2005 3.0L M54 DME-MS45.1] : 95
RITmusic2k [2004 3.0L M54 DME-MS45.1] : 83 T-stat work ongoing
terraphantm [2003 3.0L M54 DME-MS45.1] : 95
Hermes: [2005 3.0L M54 DME-MS45.1] = 95
328ioc: [2005 3.0L M54 DME-MS45.1] = 95
WOLFN8TR:[2005 3.0L M54 DME-MS45.1] = 90
pip: [2005 3.0L M54 DME-MS45.1] = 97
Johnrando: [2006 3.0L M54 DME-MS45.1] = 94
Meric: [2004 3.0L M54 DME-MS45.1] = 98
Nivo: [2004 3.0L M54 DME-MS45.1] = 95
NorCalZman: [2005 3.0L M54 DME-MS45.1] = 94
Blaster3500: [2007 335i ? dudes in the know can fill this in please] = 95
OtterEffect: [2003 3.0L M54 DME-MS45.1] = 93
Whammy [2003 3.0L M54 DME-MS45.1] : 96
Vas [2004 3.0L M54 DME-MS45.1] : 94
Jconlin16 [2003 3.0L M54 DME-MS45.1] = 93
BMWCurves [2003 3.0L M54 DME-MS45.1] = 98
elcid86 [2004 3.0L M54 DME-MS45.1] = 95 (mostly, ranged from 92-95 while driving thru town)

[BMWCurves]

How do you find out your DME SW?

[Vas]

How do you find out your DME SW?

You can see it with PA Soft IIRC

[BMWCurves]

Gotcha, I'll have to check next time I'm coding something