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Do-It-Yourself H.Q.
Share your DIY projects or ask questions about how to fix something on your own. Help fellow Bimmerfest members improve your wrench turning skills! All BMW DIY tips, tales, and projects discussed inside. Learn to work on your car and know the right BMW parts you will need!

 
 
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Old 02-01-2013, 05:53 PM
sziebart sziebart is offline
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Location: nashville
 
Join Date: Feb 2013
Posts: 1
Mein Auto: 07 328i
ac pulley noise

07 328i

Have a metallic whirrring noise from the passenger side of engine.I replaced the idler pulley and the tensioner pulley and serpentine belt. I get the noise only after the car has warmed up. Starts and drives fine but then the engine stumbles and shakes at stops. The rpm drops and kills the motor. Noise is coming from the ac pulley, I think? Is it possible the ac pulley or bearings are shot? Thinking to remove belt and see if noise and stumbling go away. Any ideas on how to diagnose and fix? Thanks!
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