engine overheat error but temp under 250?

giovanniv · 09-27-2015, 05:04 PM

Hey guys quick question, just today a buddy of mine got an engine overheat warning drive moderatly to bring engine temp down but temperature never got over 250 degrees. Could it have been a false alarm? Or something potentially going bad?

Sgop335 · 09-27-2015, 05:12 PM

Overheat could be coolant. Oil temp is displayed by gage.

Could be the water pump, how many miles and year on your buddys? Check for shadow codes.

giovanniv · 09-27-2015, 05:31 PM

66k miles and thats true. I checked codes and nothing in relevance to coolant? Very weird. Maybe water pump?

idrift4wd · 09-27-2015, 05:39 PM

waterpump.

twinboost_MD · 09-28-2015, 10:37 AM

tell him to listen for the waterpump humming after he shuts the car off. you can only hear it outside the car. if you dont hear it you know what it is

E9Blue · 09-28-2015, 12:09 PM

If you only have the drive moderately light and it is the water pump drive it lightly to the shop and have it checked out. If you wait at all the pump WILL fail and murphy's law says it will fail when you are on the way to work 30 miles from your shop. Ask me how I know.

Miller335 · 09-28-2015, 12:45 PM

Quote:

Originally Posted by twinboost93

tell him to listen for the waterpump humming after he shuts the car off. you can only hear it outside the car. if you dont hear it you know what it is

Better yet run the bleed procedure and see how the pump reacts.

Jeff@TopGearSolutions · 09-28-2015, 02:38 PM

Quote:

Originally Posted by giovanniv

Hey guys quick question, just today a buddy of mine got an engine overheat warning drive moderatly to bring engine temp down but temperature never got over 250 degrees. Could it have been a false alarm? Or something potentially going bad?

The temp gauge is oil on this particular platform.

There is no gauge for coolant which is why it throws the engine over heat warning.

First step is to check coolant level, this car is known to drink coolant.

If the coolant is the appropriate level, he may have a failing/failed water pump, which is a common failure point.

techwhiz · 09-28-2015, 03:02 PM

Quote:

Originally Posted by giovanniv

Hey guys quick question, just today a buddy of mine got an engine overheat warning drive moderatly to bring engine temp down but temperature never got over 250 degrees. Could it have been a false alarm? Or something potentially going bad?

Water pump.
Don't play. Playing and not getting it fixed ASAP means new engine if you drive.

09-27-2015, 05:04 PM	#1
giovanniv Private First Class 6 Rep 106 Posts Drives: 08 e93 Join Date: May 2014 Location: illinois iTrader: (1)	engine overheat error but temp under 250? Hey guys quick question, just today a buddy of mine got an engine overheat warning drive moderatly to bring engine temp down but temperature never got over 250 degrees. Could it have been a false alarm? Or something potentially going bad?
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09-27-2015, 05:12 PM	#2
Sgop335 Colonel 648 Rep 2,015 Posts Drives: 07 335i e92, 08 535i Join Date: Jun 2014 Location: MD iTrader: (1)	Overheat could be coolant. Oil temp is displayed by gage. Could be the water pump, how many miles and year on your buddys? Check for shadow codes. __________________ 335i e92 TPC 19Ts
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09-27-2015, 05:31 PM	#3
giovanniv Private First Class 6 Rep 106 Posts Drives: 08 e93 Join Date: May 2014 Location: illinois iTrader: (1)	66k miles and thats true. I checked codes and nothing in relevance to coolant? Very weird. Maybe water pump?
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09-27-2015, 05:39 PM	#4
idrift4wd Brigadier General 149 Rep 3,552 Posts Drives: Three Hundred and Thirty Five Join Date: Jul 2010 Location: Yonkers NY iTrader: (0) Garage List 2007 BMW [7.00]	waterpump. __________________ 12.0 @ 117
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09-28-2015, 10:37 AM	#5
twinboost_MD Private First Class 19 Rep 188 Posts Drives: AW 135i Join Date: Feb 2015 Location: Washington, DC iTrader: (0)	tell him to listen for the waterpump humming after he shuts the car off. you can only hear it outside the car. if you dont hear it you know what it is
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09-28-2015, 12:09 PM	#6
E9Blue New Member 3 Rep 4 Posts Drives: 08 335 Join Date: Sep 2015 Location: SoCal iTrader: (0)	If you only have the drive moderately light and it is the water pump drive it lightly to the shop and have it checked out. If you wait at all the pump WILL fail and murphy's law says it will fail when you are on the way to work 30 miles from your shop. Ask me how I know.
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