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Old 10-20-2012, 04:31 AM   #3
Registered User
Join Date: Mar 2007
Location: Washington - PacNW
Posts: 259
My Ride: 01' 330i
Got 100% same noise!! Still tracking it down. So far I have narrowed it either alternator bearing/pulley or idler pulley. If its not that then I've read the tensioners can go bad as well.
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