Recent Topics
'17 Accent
by Al - 11/18/19 07:40 PM
considering a newer car.
by JustinH - 11/18/19 06:56 PM
2007 Accord - P0420 Code
by maverickfhs - 11/18/19 06:52 PM
2009 Ford Focus UOA Mag 1 5W30 4265 miles
by tomcruise - 11/18/19 06:09 PM
What’s in HM oil ?
by kstanf150 - 11/18/19 06:03 PM
Heater Core replacement 1997 Explorer
by racer44 - 11/18/19 06:01 PM
No shocker, but a rip-off story...
by KGMtech - 11/18/19 05:55 PM
AGM Question
by Bear - 11/18/19 05:36 PM
1970 engine noise
by 007 - 11/18/19 04:59 PM
Jalopnik Financial Suggestion
by madRiver - 11/18/19 04:46 PM
Looking for a soft riding car
by Nayov - 11/18/19 04:00 PM
Do you use one filter brand or many?
by wemay - 11/18/19 02:43 PM
ATV engine oil
by supton - 11/18/19 02:02 PM
10w30 HDEO or 15w40, others. What's in your engine?
by 53' Stude - 11/18/19 01:47 PM
GM dealer oil change: Who makes their oil?
by Benzadmiral - 11/18/19 01:45 PM
Don't Fix Your Car!
by Y_K - 11/18/19 01:18 PM
best LL01 oil (for F10 M5/S63Tu)?
by vafan13 - 11/18/19 12:55 PM
Stripped oil pan
by dosmom - 11/18/19 12:35 PM
HyunKia Wix 51334XP $6.73 @ Amazon
by SlavaB - 11/18/19 12:18 PM
Newest Members
spiffy63, WhiteMega1227, ak2az, vafan13, Breezeknees
69908 Registered Users
Who's Online Now
132 registered members (ABerns, 4WD, 2015_PSD, 645ja, 01rangerxl, 69GTX, 15 invisible), 2,067 guests, and 21 spiders.
Key: Admin, Global Mod, Mod
Forum Statistics
Forums67
Topics297,607
Posts5,119,043
Members69,908
Most Online3,589
Nov 2nd, 2019
Donate to BITOG
Print Thread
Hop To
Mercedes C240 Engine Temperature #5243232 10/18/19 10:20 AM
Joined: Apr 2018
Posts: 159
N
NICAT Offline OP
OP Offline
N
Joined: Apr 2018
Posts: 159
Hi.
Mercedes C240 1999, M112 Engine.
Engine temperature usually stays near 100 (as seen in the image ) at city driving. At highways, it drops to 80
Many owners say that it should stay 80.even in city driving.
Fan is working. Removed the thermostat, still same.
What is the normal running temperature of this engine ?
Regards

[Linked Image]

Last edited by NICAT; 10/18/19 10:44 AM.
Re: Mercedes C240 Engine Temperature [Re: NICAT] #5243262 10/18/19 10:57 AM
Joined: Aug 2019
Posts: 13
F
Fotoflame Offline
Offline
F
Joined: Aug 2019
Posts: 13
Hello. While I don't have a C240, I do have a 2000 E55 AMG. I can tell you in city stop-and-go traffic the temp gauge (which looks just like the one in the photo you posted) will raise somewhere between the 80 to 100 marks. I'm pretty sure it's normal. I posted a link to a MB message board where they discuss the same topic and they think it's normal. As long as the coolant is at the right level and you don't see any leaks, you should be fine.


W202 Temp

Re: Mercedes C240 Engine Temperature [Re: NICAT] #5243328 10/18/19 11:53 AM
Joined: Apr 2018
Posts: 159
N
NICAT Offline OP
OP Offline
N
Joined: Apr 2018
Posts: 159
Hi. Thanks for answer

Re: Mercedes C240 Engine Temperature [Re: NICAT] #5243340 10/18/19 12:04 PM
Joined: Sep 2015
Posts: 2,249
M
mk378 Offline
Offline
M
Joined: Sep 2015
Posts: 2,249
In the city both the engine and the radiator will heat up until the fan starts. On highway the radiator stays cool so the thermostat controls the engine. What is the thermostat rating, and is it the one specified for the car? Usually the thermostat and fan set temperatures are closer together.

Re: Mercedes C240 Engine Temperature [Re: NICAT] #5243344 10/18/19 12:08 PM
Joined: Apr 2018
Posts: 16
A
andreigbs Offline
Offline
A
Joined: Apr 2018
Posts: 16
I believe most German autos come with an 87*C T-stat.

The temp looks completely normal to me.


2014 MB GLK250 BT // 106,xxx miles // 34 MPG // LM TopTec 4605 5w30
2014 VW Jetta TDI // 40,xxx miles // 38 MPG // LM Longlife III 5w30
Re: Mercedes C240 Engine Temperature [Re: NICAT] #5243357 10/18/19 12:18 PM
Joined: Nov 2011
Posts: 1,894
A
Audios Online Content
Online Content
A
Joined: Nov 2011
Posts: 1,894
Normal 84-88 degree thermostat. For the life of me, I dont know why Mercedes does this, this was a huge complaint when I started at an MB dealer in 2002, why dont they just make it a normal temp gauge where it rides dead center. Even the new ones do this, had a 16 E class in, and even though theres no numbers on the temp gauge anymore, it still runs 2 ticks above the mid line. WHY?


2002 VW Golf TDI-T5 10/30
2007 Mercedes GL320 CDI- M1 0/30 ESP
2005 BMW M3 BMW-Twin Power 10/60
2003 BMW M5-M1 15/50
1998 BMW M3/4/5-M1 10/40
Re: Mercedes C240 Engine Temperature [Re: NICAT] #5243418 10/18/19 01:14 PM
Joined: Apr 2018
Posts: 16
A
andreigbs Offline
Offline
A
Joined: Apr 2018
Posts: 16
On the 2014+ Jettas (and other VW models, I think) they've actually done away with the coolant temp gauge entirely. I had to plug in my old ScanGaugeII to get coolant temp info.

I agree, make the temp point to the middle of the graph so people at least have a clue.


2014 MB GLK250 BT // 106,xxx miles // 34 MPG // LM TopTec 4605 5w30
2014 VW Jetta TDI // 40,xxx miles // 38 MPG // LM Longlife III 5w30
Re: Mercedes C240 Engine Temperature [Re: NICAT] #5243424 10/18/19 01:20 PM
Joined: May 2019
Posts: 2,608
M
Mad_Hatter Offline
Offline
M
Joined: May 2019
Posts: 2,608
Originally Posted by NICAT
Hi.
Mercedes C240 1999, M112 Engine.
Engine temperature usually stays near 100 (as seen in the image ) at city driving. At highways, it drops to 80
Many owners say that it should stay 80.even in city driving.
Fan is working. Removed the thermostat, still same.
What is the normal running temperature of this engine ?
Regards

[Linked Image]

Why are you running at 23c - did you pull the stat permanently??.. because that's way below the normal 180~220f operating range for a ICE.

Last edited by Mad_Hatter; 10/18/19 01:21 PM.
Re: Mercedes C240 Engine Temperature [Re: Mad_Hatter] #5243466 10/18/19 02:06 PM
Joined: Jul 2005
Posts: 32
S
StarCaller Offline
Offline
S
Joined: Jul 2005
Posts: 32
Quote
Why are you running at 23c

probably outside temperature /

Re: Mercedes C240 Engine Temperature [Re: NICAT] #5243468 10/18/19 02:08 PM
Joined: Sep 2003
Posts: 3,216
B
Brons2 Offline
Offline
B
Joined: Sep 2003
Posts: 3,216
23C is the ambient temp, not the coolant temp.


2012 Hyundai Sonata GLS 6MT 2.4GDI, ProDS 5w & 10w30 seasonal, XG9688 filter, 2018 Mitsubishi Outlander SEL 2.4 CVT, Dealership Castrol 0w20, Mazda filter.
Re: Mercedes C240 Engine Temperature [Re: Brons2] #5243498 10/18/19 02:46 PM
Joined: May 2019
Posts: 2,608
M
Mad_Hatter Offline
Offline
M
Joined: May 2019
Posts: 2,608
Originally Posted by Brons2
23C is the ambient temp, not the coolant temp.

Oh I see...got it. I don't know why I originally didn't notice the temp gauge to the left, duh😂.. I don't see what's the problem here? 100c is a little on the high side but still within the normal range for internal combustion engines of 180~220f. By comparison my coolant temp goes between 180~201'ish f... depending on the season. The fans kick on at 200f so it only goes above 200f during the hottest outside temps. My boiling point is something like 240f, so it's well below any potential overheating issue.

Last edited by Mad_Hatter; 10/18/19 02:49 PM.
Re: Mercedes C240 Engine Temperature [Re: NICAT] #5243570 10/18/19 04:26 PM
Joined: Apr 2018
Posts: 159
N
NICAT Offline OP
OP Offline
N
Joined: Apr 2018
Posts: 159
Thanks for replies.

Previous Thread
Index
Next Thread

BOB IS THE OIL GUY® Powered by UBB.threads™