Thread: Bad lifter?
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      09-13-2012, 08:25 PM   #22
MilehighM3
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Drives: E90 M3
Join Date: May 2011
Location: Colorado Springs

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Take the belt off and try it again. I am starting to see a lot of alternators make that same noise. There's a clutch of some sort that makes the noise internally. Definitely worth a shot. You can't spin the alternator with a drill to check the noise, it has to be loaded electronically to make it happen. Removing the belt is the easiest way to tell. Keep us updated!