E46Fanatics - View Single Post - odd "whistle" "squeel" while driving?
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Old 01-09-2013, 08:30 PM   #20
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Join Date: Mar 2008
Location: Northern CA
Posts: 172
My Ride: '02 330Ci
guess I should have watched your video, duh. Does the noise go away if you open your oil cap with the engine running? If it goes away I would say it's your crankcase vent valve, if not it sounds like it could be a belt pulley.
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