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      05-03-2016, 06:50 AM   #3
Kyoshi71
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Drives: 2010 M3 Coupe
Join Date: Jul 2006
Location: New York

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Quote:
Originally Posted by ///M Power-Belgium View Post
To me this sounds like a metallic vibration noise...
And it makes me think on "wear" of the pulley axle .
I heard this before on here , and I hope a quick fix for your problem because this noise would make me insane (tracking noises takes time)
Good luck man , and please let us know ...

Your video..

Agree (or maybe possibly a vacuum leak)

Take a stick (like a half of a broomstick) and listen to your accessories while the car is running. If it is a pulley bearing, you'll pinpoint it.
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