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
Possible Tensioner Bearing... (archive)
[ Follow Ups ] [ 8-series (E31) Message Board ] [ Msg. Board FAQ ]
Posted by GregK on July 15, 2000 at 14:28:14:

In Reply to: Sound from engine compartment on A/C activation posted by Chorobe on July 15, 2000 at 03:48:33:

I experienced the same symptoms: A dull whine at 3k rpm with the air conditioner on. Not there with the ac off. Turned out to be the belt tensioner bearing. Have a mechanic listen to it with a stethascope while the engine is running. If its the cause he'll hear a low rumbling from the bearing. At speeds higher than idle it translates to the whine. The tensioner is about $70 plus install labor.

Greg K
1991 850
1988 M5

Follow Ups:


[ Follow Ups ] [ 8-series (E31) 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.