BMW N52 Help

Been hearing what I believe is a bearing whine coming from the engine bay. Only notice it when the car is warmed up and I’m cruising at low speeds with the windows down or have it parked with the windows down. It increases in frequency directly related to engine speed.

Some Googling suggested it may be coming from the oil filter if it was installed improperly, but after looking over the car myself the filter housing isn’t the source of the noise. Haven’t determined which pulley it is yet, but it’s certainly coming from the lower front part of the engine.


Then there’s this:

Not entirely sure what’s up with the serpentine belt, but I’m know it shouldn’t look like that. I think I’ll be ordering a new one here shortly.

Any tips on tracking down the bad pulley?

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