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      10-13-2012, 04:33 PM   #17
n54door's Avatar
Drives: 08' 135i - JB4 ISO, DCI, E30
Join Date: Sep 2011
Location: DFW

Posts: 604
iTrader: (4)

is your a/c on? if so turn it off and see if still makes the sound. Inspect your belts too... sounds like a rotating noise to me.
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