E46Fanatics - View Single Post - Bmw e46 325i 2004 whining noise and rough whine at idle
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Old 04-05-2019, 05:46 PM   #1
Michael41197
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Join Date: Apr 2019
Posts: 2
Bmw e46 325i 2004 whining noise and rough whine at idle

Hi everyone, I have been trying to diagnose my 325i's whining noise at idle and when revving for some time now. Different fourums and videos have led me to believe it was the idler puller, tensioner pulley, and bad alternator bearing. I have since replaced all of these parts which ended up needing to be replaced anyways because all of these parts had shot bearings, but I'm still left with this grinding/whine at idle and a whine while revving the vehicle. From what I can tell the vehicle belts ac/drive belts look to be solid. The water pump was replaced not too long ago and my steering feels fine; however my power steering resivour and lines look a bit glossy like there might be a small leak. Anyhow any help would be appreciated to help me solve the mystery of the whining noise. I will try and post a video of my car idling and revving.
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