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      12-23-2012, 09:21 PM   #1
db2112
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Drives: '07 328i Sedan Sport
Join Date: Aug 2010
Location: Cary, NC

Posts: 30
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328i Belt Tensioner Defect?

Had my car (2007 328i) serviced recently at a local independent BMW shop. The tech told me that my serpentine belt was slipping off due to a defective belt tensioner - the belt has about 1-2mm hanging over edge of top pulley. The tech says the belt tensioner pulley frame is bending and that this was a known defect but BMW won't recognize it. Only recourse is to replace the entire belt tensioner pulley and frame assembly.

I have searched and haven't found this discussed by anyone else. Is this really a known issue with these cars? Or is he maybe playing some kind of repair shop game here?
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