[PranK]

Hi Guys

I'm sorry if this has been asked, my searches found similar problems but none that matched my problem perfectly.

My 330i has a noise that is exactly like a dodgy stereo install from 2001. It kind of whines with a high frequency as if you had a crap ground or you ran power and RCA's next to each other to the boot.

I immediately thought it was stereo but I can't make it go away with stereo off, turned down and muted (as well as unplugging aux in).

I did make it go away by turning off the A/C.

The thing is though, it doesn't sound like compressor and it *might* be fan belt but the sound appears to be electrical and from the footwell.

I'm not sure if I can rev the car from the engine bay with the electronic throttle so I haven't tried that.

Fingers crossed this is something easy to fix cause it's driving me nuts.

Thanks,

Christian

[Big Mexican Women]

Probably AC compressor bearing.

[PranK]

Originally Posted by Big Mexican Women

Probably AC compressor bearing.

The car is super low milage (56,000k's ~35,000 miles).

Can I rev the car from the engine bay to listen for it? Otherwise I'll get my kids to work the throttle from inside.