Whistling noise.... [Archive] - Bimmerfest - BMW Forums

: Whistling noise....

12-03-2008, 08:19 AM
I have a 1992 535i. It has the staggered 17inch BMW wheels which gives it that ultimate look. The engine runs strong but after it heats up, there's a whistling sound almost like an alarm of some sort. It doesn't affect the way the motor runs but it's very annoying. Can someone please tell me what to do? ( DESPERATELY NEEDING ADVICE ):cry:

bimmer dot info
12-03-2008, 11:30 AM
Pop the hood and listen around. Try to narrow down the source of the sound. A mechanics stethescope or even a paper towel tube can help.

12-03-2008, 05:05 PM
The whistling noise sounds like it's coming from the Oxygen Sensor area...

bimmer dot info
12-04-2008, 06:28 AM
It could be an exhaust leak. This could be due to the pipe rusting or a bad connection. Get the car in the air and take a look.