Hey everyone,

I recently experience a very high pitched whining noise on my e92 M3. A lot of people were saying it was power steering related, but they were wrong lol.

It was my idler pulley. Check out the videos below. Just posting these in case someone else runs into the same problem.


https://www.youtube.com/watch?v=32NuRh9xhvQ (Whining sound)

https://www.youtube.com/watch?v=fIIgx_AYhXs ( Just uploaded because it sounds sick)

https://www.youtube.com/watch?v=TBKz1U6bqhc (Idler pulley)


Thanks! Hope this is of help to anyone in need of some!