E90Post
 


E92 Lighting
 
BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N57 / M57 Turbo Diesel Discussions - 335d > Thermostat?



Reply
 
Thread Tools Search this Thread
      02-13-2015, 02:21 PM   #1
335dwanted
New Member
0
Rep
15
Posts

Drives: Soon to be 335d
Join Date: Jul 2014
Location: Northern NJ

iTrader: (0)

Thermostat?

So with the onset of winter I have noticed that my coolant temperatures have been surprisingly low (measured via Torque program on my phone).

On this morning's drive to work it was roughly 5F. It took the car about 8.5 minutes to approach 160F (car was parked in the garage and showed 37F on the outside temp guage when I started up). This warm up time was all surface streets at 40 MPH or so.

On my 25 minute trip the coolant temp never got higher than 171.6F. Near the end of the trip I get on the highway and travel roughly 75 MPH for 8 minutes and the temp stays within 168.8F and 165F.

My car is a 2009 335D w/ 65K miles. I bought the car late last summer with 62K so I don't have a lot of experience with the coolant temps (although when it was warmer out this fall I would see temps right around 180F if my recollection is right - I can check some of my old logs if need be). I don't have the radiator blocked in any fashion and my EGR is still unblocked (working normally).

Does this feel normal to you guys or should I be thinking about my thermostat? If not normal, is there any way to check the thermostat? I have CPO coverage for another month, but I anticpate resistance to get my stealership to look at this proactively (no SES).
Appreciate 0
      02-13-2015, 07:12 PM   #2
locolobo
Enlisted Member
locolobo's Avatar
United_States
0
Rep
32
Posts

Drives: 2009 335d Barbera Red Metallic
Join Date: May 2013
Location: Upper Arlington, Ohio

iTrader: (0)

Garage List
2009 335d  [0.00]
Send a message via Skype™ to locolobo
It's supposed to maintain 88C. Mine was running low at 82C, even in summer, so I replaced it (myself). The new one is still not staying closed all the time to full temp. I have decided not to worry about it; the car is running fine.
__________________
2009 335d Barbera Red Metallic; Mods: Ecotune
Appreciate 0
      02-14-2015, 11:01 AM   #3
335dwanted
New Member
0
Rep
15
Posts

Drives: Soon to be 335d
Join Date: Jul 2014
Location: Northern NJ

iTrader: (0)

Thanks Loco. Based on a bit of reading it appears that there may be a thermostat for the EGR cooler in addition to the main/traditional thermostat. I presume you changed the main one; was it difficult?

It was 16F degrees this morning and the coolant bounced between 168 and 172 in 20 minute drive through town (no highway driving). That is roughly 77C.

I guess I will try to get the dealer to look at it, but if they won't cover I will look into replacing it.
Appreciate 0
      02-14-2015, 07:07 PM   #4
Wrecker335d
Wondering what to do..
Wrecker335d's Avatar
United_States
10
Rep
663
Posts

Drives: like a cock
Join Date: Oct 2010
Location: Quantico or Long Island

iTrader: (4)

Quote:
Originally Posted by 335dwanted View Post
Thanks Loco. Based on a bit of reading it appears that there may be a thermostat for the EGR cooler in addition to the main/traditional thermostat. I presume you changed the main one; was it difficult?

It was 16F degrees this morning and the coolant bounced between 168 and 172 in 20 minute drive through town (no highway driving). That is roughly 77C.

I guess I will try to get the dealer to look at it, but if they won't cover I will look into replacing it.
Those are my temps during a full warm-up with my EGR blocked. With you, that shouldn't be the case. I actually don't mind the car when it just sits at 180F during the summer, it kind of helps reduce heatstroke.

This morning my car never went above 152F during a 15min highway trip, it was 0 degree's
__________________
Mods: JBD, 35% tint, Wagner Intercooler, Bilstien B12 Kit, M3 Control Arms

OEF Veteran
Appreciate 0
      02-15-2015, 03:19 AM   #5
Yozh
Captain
Yozh's Avatar
Canada
21
Rep
753
Posts

Drives: 2011 335d M-Sport
Join Date: Mar 2014
Location: Wet Coast

iTrader: (2)

Quote:
Originally Posted by 335dwanted View Post
Based on a bit of reading it appears that there may be a thermostat for the EGR cooler in addition to the main/traditional thermostat.
It is only on the European cars that an EGR thermostat was fitted. North American ones control the EGR cooler bypass utilizing a vacuum operated solenoid. That in turn is controlled through an electric switchover valve fed from the vacuum pump.
Appreciate 0
      02-15-2015, 10:42 AM   #6
335dwanted
New Member
0
Rep
15
Posts

Drives: Soon to be 335d
Join Date: Jul 2014
Location: Northern NJ

iTrader: (0)

Thanks Yozh; this explains why I could not fine a US part number!

Quote:
Originally Posted by Yozh View Post
It is only on the European cars that an EGR thermostat was fitted. North American ones control the EGR cooler bypass utilizing a vacuum operated solenoid. That in turn is controlled through an electric switchover valve fed from the vacuum pump.
Appreciate 0
      02-15-2015, 03:10 PM   #7
TDIwyse
Major
93
Rep
1,312
Posts

Drives: 2011 335d
Join Date: Aug 2012
Location: MidWest

iTrader: (0)

I've had 6 diesel vehicles and in extreme cold weather, when they're not being worked hard, none of them get up to and maintain full operating temp. Since new, I've had to cover the front openings on the 335d to achieve full operating temp in the winter, and even then it takes awhile. However, if you do choose to cover the front it's a good idea to monitor coolant temps, especially if it still does dpf regens ... things get real hot when the regen is going on.
__________________
2011 335d 11.8 sec 120 mph 1/4 mile NHRA certified track
Ram Cummins with lots-o-mods
Appreciate 0
      02-15-2015, 04:05 PM   #8
335dwanted
New Member
0
Rep
15
Posts

Drives: Soon to be 335d
Join Date: Jul 2014
Location: Northern NJ

iTrader: (0)

Thanks, I will look into blocking off the radiator; I saw where you posted your shutter panels. I almost always drive with Torque running on my phone.


Quote:
Originally Posted by TDIwyse View Post
I've had 6 diesel vehicles and in extreme cold weather, when they're not being worked hard, none of them get up to and maintain full operating temp. Since new, I've had to cover the front openings on the 335d to achieve full operating temp in the winter, and even then it takes awhile. However, if you do choose to cover the front it's a good idea to monitor coolant temps, especially if it still does dpf regens ... things get real hot when the regen is going on.
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
Forum Jump


All times are GMT -5. The time now is 06:41 AM.




e90post
e90post
Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2015, Jelsoft Enterprises Ltd.
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