Thread: What's wrong
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Old 09-30-2012, 11:42 PM   #6
Beamer Creamer
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Join Date: Sep 2012
Location: Canada
Posts: 270
My Ride: 2005 bmw m3
Dont waste money guessing and replacing. You can get a cheap stethescope and use open tube to listen to each pulley/idler. I know its old school but still best. Or some idlers you can use probe attachment and touch on unmoving parts should hear if its rough
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