The complete automotive resource for buyers, sellers, and owners like you.
Car, Truck and SUV Forums at Roadfly
+ Bentley Forums
+ BMW Forums
+ Cadillac Forums
+ Chevrolet Forums
+ Ferrari Forums
+ Jaguar Forums
+ Lamborghini Forums
+ Lotus Forums
+ Mercedes-Benz Forums
+ Maserati Forums
+ MINI Forums
+ Porsche Forums
+ General Discussion
+ Marketplace Forums
Hot at Idle? (archive)
[ Follow Ups ] [ M5 (E28) Message Board ] [ Msg. Board FAQ ]
Posted by ian M635 uk on August 30, 2001 at 11:17:30:

In Reply to: Still running hot... posted by Sean on August 27, 2001 at 21:30:50:


Hot at idle COULD be caused by poor fuel combustion (running lean). Remember idle conditions are different than normal operation. I have an M635 and have just cleaned out the bleed valves on each throttle body - they were really crappy. My problem was insufficient air suuply for idle conditions resulting in high CO emmissions, a low idle speed and COLD exhaust conditions. The converse would be true (i.e. hot running at idle) if the mixture is lean - possible caused by a failing air flow meter or incorrectly adjusted bleed valve settings. Just for info...

Ian


Replaced the fan clutch and it didn't seem to have any effect. It does feel a little more firm than the one I replaced, but was apparently not the culprit as the car is still running hot at slow speeds. I guess the thermostat is next. Any other suggestions?

Thanks.

Sean
'88 M5
'76 2002



Follow Ups:


[ Follow Ups ] [ M5 (E28) Message Board ] [ Msg. Board FAQ ]
Questions, comments, or problems, please visit the Roadfly help desk.
Roadfly.com Logo © 1997 - 2009 Jump Internet Inc. All rights reserved.