E90Post
 


 
BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N57 / M57 Turbo Diesel Discussions - 335d > Low coolant temperature



Reply
 
Thread Tools Search this Thread
      01-26-2017, 02:44 AM   #89
vladmury
First Lieutenant
vladmury's Avatar
Denmark
101
Rep
348
Posts

Drives: 325d E90 LCI M-sport
Join Date: Jan 2015
Location: Denmark

iTrader: (0)

Actually its the same thermostat 11517805811 with 88 degrees stamped. It probably depends on the cooling system, 325d has both EGR and main stat.
Appreciate 0
      01-26-2017, 03:37 AM   #90
_TB_
Lieutenant
148
Rep
436
Posts

Drives: E91 325d Touring
Join Date: Jul 2015
Location: Denmark

iTrader: (0)

Quote:
Originally Posted by vladmury View Post
Actually its the same thermostat 11517805811 with 88 degrees stamped. It probably depends on the cooling system, 325d has both EGR and main stat.
Do you have the partnumber for the EGR thermostat?

Can it easily be disabled - if you're running with a "disabled" EGR?
Appreciate 0
      01-26-2017, 03:42 AM   #91
vladmury
First Lieutenant
vladmury's Avatar
Denmark
101
Rep
348
Posts

Drives: 325d E90 LCI M-sport
Join Date: Jan 2015
Location: Denmark

iTrader: (0)

EGR thermostat part number is : 11717787870

My theory is that water is used to cool down the exhaust gas before it enters the intake manifold, because the intake is made out of plastic and it would melt if exposed to 600*C exhaust gas.
Water needs to be forced through the heat exchanger so flow has to go from the water pump feed side of the cooling system to the suction (radiator) side. The amount of cooling capacity needed varies with EGR usage, exhaust temperature etc so it needs a thermostat to prevent overcooling in certain conditions.
With the EGR bypassed, you still need it the thermostat to keep the cooling system intact. It costs 200 kr so worth changing it.

So yes, you still need the EGR thermostat.
Appreciate 0
      01-26-2017, 03:46 AM   #92
_TB_
Lieutenant
148
Rep
436
Posts

Drives: E91 325d Touring
Join Date: Jul 2015
Location: Denmark

iTrader: (0)

Quote:
Originally Posted by vladmury View Post
EGR thermostat part number is : 11717787870

My theory is that water is used to cool down the exhaust gas before it enters the intake manifold, because the intake is made out of plastic and it would melt if exposed to 600*C exhaust gas.
Water needs to be forced through the heat exchanger so flow has to go from the water pump feed side of the cooling system to the suction (radiator) side. The amount of cooling capacity needed varies with EGR usage, exhaust temperature etc so it needs a thermostat to prevent overcooling in certain conditions.
With the EGR bypassed, you still need it the thermostat to keep the cooling system intact. It costs 200 kr so worth changing it.

So yes, you still need the EGR thermostat.
EGR is disabled on mine - so no need to cool something that is not there.
Appreciate 0
      01-26-2017, 04:19 AM   #93
vladmury
First Lieutenant
vladmury's Avatar
Denmark
101
Rep
348
Posts

Drives: 325d E90 LCI M-sport
Join Date: Jan 2015
Location: Denmark

iTrader: (0)

Without EGR thermostat your car will not warm up properly at 88-92 C. Its part of the cooling system so it cant be eliminated.
Appreciate 0
      01-26-2017, 10:30 AM   #94
Torqu3
Major
United_States
319
Rep
1,157
Posts

Drives: 2011 335d
Join Date: Sep 2016
Location: Centralish Texas

iTrader: (0)

At least over here in the States the 335ds(no EGR thermostat) with blocked EGRs tend to run just a few degrees colder. Nothing major at all.
Appreciate 0
      01-27-2017, 09:27 PM   #95
JTC1
Private First Class
36
Rep
122
Posts

Drives: 2011 335d
Join Date: Oct 2016
Location: Atl

iTrader: (0)

Finally had my tstat replaced after having a new one sitting in my garage for the last two weeks. Went to start monitoring with Carly and it doesn't read correctly now. Stuck at 8196 deg C. Started monitoring through hidden menus and it's running perfectly at 88 deg C. Anyone ever seen this? There were a couple of recent updates to the Carly app., but it seems to be reading everything else correctly. Any ideas? I've tried everything short off deleting the app and re-installing it.
Appreciate 0
      01-28-2017, 05:10 PM   #96
Torqu3
Major
United_States
319
Rep
1,157
Posts

Drives: 2011 335d
Join Date: Sep 2016
Location: Centralish Texas

iTrader: (0)

Quote:
Originally Posted by JTC1 View Post
Finally had my tstat replaced after having a new one sitting in my garage for the last two weeks. Went to start monitoring with Carly and it doesn't read correctly now. Stuck at 8196 deg C. Started monitoring through hidden menus and it's running perfectly at 88 deg C. Anyone ever seen this? There were a couple of recent updates to the Carly app., but it seems to be reading everything else correctly. Any ideas? I've tried everything short off deleting the app and re-installing it.

Maybe your adapter is "outdated" now. Try using the torque app or something similar and see if it reads temp properly. Or pull up the secret menu and see what's up.
Appreciate 0
      01-31-2017, 04:16 PM   #97
vladmury
First Lieutenant
vladmury's Avatar
Denmark
101
Rep
348
Posts

Drives: 325d E90 LCI M-sport
Join Date: Jan 2015
Location: Denmark

iTrader: (0)

Quote:
Originally Posted by JTC1 View Post
Finally had my tstat replaced after having a new one sitting in my garage for the last two weeks. Went to start monitoring with Carly and it doesn't read correctly now. Stuck at 8196 deg C. Started monitoring through hidden menus and it's running perfectly at 88 deg C. Anyone ever seen this? There were a couple of recent updates to the Carly app., but it seems to be reading everything else correctly. Any ideas? I've tried everything short off deleting the app and re-installing it.
Mine works just fine, try to make a log.
Appreciate 0
      02-01-2017, 08:00 AM   #98
JTC1
Private First Class
36
Rep
122
Posts

Drives: 2011 335d
Join Date: Oct 2016
Location: Atl

iTrader: (0)

I contacted them about the issue and this was the response. We will see if it gets fixed.


"This means, that we read out a wrong sensor, or the wrong oft he available
coolant temperatures.

I will try to find another param value ( It is sometimes difficult, because
in our database there are up to 2000 possible parameters)
For now, you can try our obd-parameters (on the obd functions). There it
should be a coolant temperature. This obd-parameter temperature should work,
because it is for the standard obd-params, which also other apps can read.

We will try to fix the coolant temperature in our bmw specific params, too.

Kind Regards from Munich,"
Appreciate 0
      12-06-2017, 04:22 PM   #99
rich9231
Registered
0
Rep
1
Posts

Drives: 325d 57
Join Date: Nov 2017
Location: redditch

iTrader: (0)

HELPPP DPF Issues and low temps

Hi people,
Im hoping someone can please help me.

325d 2007 E90

Ive had the DPF light come on a few times, Plugged in Carly, realised im running way too low temps = 62 Celsius to 70 averaging about 65. Dreading the cost of replacing the DPF, guessed the temp was the problem. Read that the car running around that temp would be down to a faulty EGR thermostat, have replaced it but still stuck with the same issue. Three glow plug faults also came up on Carly, would this have an affect on the temp by any chance? I know the next step would be to replace the main stat, but have been told with those temps its not likley.

Any help would be much appreciated guys
Appreciate 0
      12-06-2017, 09:43 PM   #100
nicklockard
Second Lieutenant
43
Rep
281
Posts

Drives: 2009 w/Nav; paddleshifters
Join Date: Aug 2016
Location: Phoenix

iTrader: (0)

Quote:
Originally Posted by rich9231 View Post
Hi people,
Im hoping someone can please help me.

325d 2007 E90

Ive had the DPF light come on a few times, Plugged in Carly, realised im running way too low temps = 62 Celsius to 70 averaging about 65. Dreading the cost of replacing the DPF, guessed the temp was the problem. Read that the car running around that temp would be down to a faulty EGR thermostat, have replaced it but still stuck with the same issue. Three glow plug faults also came up on Carly, would this have an affect on the temp by any chance? I know the next step would be to replace the main stat, but have been told with those temps its not likley.

Any help would be much appreciated guys
Why wouldn't it be the t-stat? This last claim makes no sense. T-stats are notoriously failure prone to run cold. In fact it's one of the top 3 causes of diesels getting poor fuel economy. It's so common, nearly every diesel forum has sticky's about it every winter. It's probably the t-stat. Put it in a pot of boiling water and check it for yourself. They're only $60USD...
__________________
SLOW & SMOKEY. My car loses to every Chevy Malibu unless I mash the throttle.

Mods: *ATM 304SS Turbo-back exhaust, w/ ox-cat *ATM stepped intercooler *ATM silicone tubing kits (hot & cold sides) JR 2.8 tune *Whitbread CP3R90 HPFP *AArod EGR racepipe*Execuhitch hidden hitch *Stage 3 transmission tune
Appreciate 0
      12-07-2017, 11:22 AM   #101
vladmury
First Lieutenant
vladmury's Avatar
Denmark
101
Rep
348
Posts

Drives: 325d E90 LCI M-sport
Join Date: Jan 2015
Location: Denmark

iTrader: (0)

If you replace the EGR thermostat, you need to replace the main thermostat as well. And fix your glow plugs errors
Appreciate 0
      03-16-2018, 09:47 AM   #102
grantm05
Registered
0
Rep
2
Posts

Drives: BMW E90
Join Date: Mar 2018
Location: South Africa

iTrader: (0)

For my BMW 320 D E90 2006 the only way to tell the temp is either the hidden menu or an obd tool.
Appreciate 0
      10-09-2018, 01:30 PM   #103
S65B40YYC
Private First Class
35
Rep
146
Posts

Drives: 08' E93 M3
Join Date: Mar 2014
Location: YYC

iTrader: (0)

Does anyone know where I can find the book time to replace a thermostat on a 09 X5d?
Appreciate 0
      10-10-2018, 04:15 PM   #104
Torqu3
Major
United_States
319
Rep
1,157
Posts

Drives: 2011 335d
Join Date: Sep 2016
Location: Centralish Texas

iTrader: (0)

Quote:
Originally Posted by S65B40YYC View Post
Does anyone know where I can find the book time to replace a thermostat on a 09 X5d?
Shouldn't take more than 2 hours to ACTUALLY do it for a DIY project. Book time is probably like 3-4 hours.

Here's a thread on how to do it. Not that hard. https://www.e90post.com/forums/showthread.php?t=608167
Appreciate 0
      03-03-2019, 02:39 PM   #105
zinner
Major
zinner's Avatar
555
Rep
1,125
Posts

Drives: `17 X5 35d/`15 335i/`18 M550IX
Join Date: Oct 2014
Location: Raleigh, NC

iTrader: (0)

I have a 2010 335d. It was running around 145-150 ECT during the winter (40-50f). I replaced thermostat with OEM at the tune of 88 dollars US. Took about 2 hours and ETC is after warm up is ~188F.

I lost about 1 gallon of coolant during the replacement.
Appreciate 0
      03-29-2019, 12:14 PM   #106
alphanova
Registered
alphanova's Avatar
Finland
8
Rep
3
Posts

Drives: e92 335d M-sport -08
Join Date: Aug 2017
Location: La la land

iTrader: (0)

Some time ago my car had a noticeable decrease in mileage. Normally runs at around 35 MPG on highway and all of the sudden it ran 29 MPG. I had a hunch it could be that the engine is running cold so I checked the hidden menus and there it was. Engine temperature max. 65-67 °C. I happened to order the main thermostat before I even learned that it could also be the EGR thermo. Luckily it was causing the problem and changing the main thermostat did the trick. No problems since.

EGR deleted and DPF deleted now. As said earlier it will only have a minor effect on coolant temperature and my mileage has gone down ever so slightly, to about 33 MPG. But having that useless junk out of my car is way worth it after all the problems I had with it.
Appreciate 0
      03-31-2019, 11:20 AM   #107
robnitro
Captain
160
Rep
803
Posts

Drives: x5 35d e70 2011
Join Date: Sep 2016
Location: NYC area

iTrader: (0)

I have a question as to how to test a thermostat that is weak but not failing. I can hit 80-85C and stay there but my stop and go commute makes it hard to judge as opposed to a steady highway run.

I was idling the car and checked around 65-70 C the other day which lines are hot/cold. It was about 55F outside.
(refer to image of cooling system below)
I noticed that the left side coolant hose to radiator (that runs into the thermostat) was cold. (near the number 1/2 in diagram- blue colored in diagram)
The right side one to radiator was very warm (near "16" big red colored hose) and the radiator itself was hard to check because the AC one is in front of it.

Being that the coolant flow is from block to right side of radiator, through radiator and exits left side to be taken into the thermostat I'd think if my thermostat was shut (below 80C or so opening point), the red hose on the right would be much cooler- unless it heats up by sitting on the "hot side"

If the thermostat was prematurely open, the left side that goes into the thermostat would be running warm- right?

If anyone has recently done their thermostat on their 35d or 335d could check these 2 hoses at a coolant temp before 75C or so- but above 60, it would be helpful to diagnose a thermostat that opens early (or "leaks through")


Appreciate 0
      02-14-2020, 01:33 PM   #108
e90Noobie
Private First Class
16
Rep
137
Posts

Drives: 335d
Join Date: Aug 2018
Location: Nunya

iTrader: (0)

Used protool to check my coolant temp last night. Never gets over 163F while driving higher than 50mph, below 50mph it gets down to 123F. When sitting still idling it gets over 200F. I think I'm screwed. Since there are 0 walkthroughs on how to drain and bleed this system I'm going to drive it three hours away to my indy mechanic to replace the thermo. Hopefully it makes the drive :|

Last edited by e90Noobie; 02-14-2020 at 02:17 PM..
Appreciate 0
      02-17-2020, 05:20 AM   #109
Persian Whisperjet
Kind of a Big Deal
United_States
167
Rep
857
Posts

Drives: 2011 335d
Join Date: Dec 2012
Location: Washington, D.C.

iTrader: (0)

https://www.e90post.com/forums/showt...istilled+water
__________________
Appreciate 0
      02-19-2020, 10:44 AM   #110
e90Noobie
Private First Class
16
Rep
137
Posts

Drives: 335d
Join Date: Aug 2018
Location: Nunya

iTrader: (0)

Had the thermo replaced over the weekend. Temp now hovering around 197F. Reset my average MPG counter and got a steady 42mpg driving on the highway for 2 hours at around 70-80mph. MPG started out at 60 and then slowly dropped to 42.
Appreciate 0
Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -5. The time now is 12:06 PM.




e90post
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST