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Old 12-06-2012, 03:41 PM   #13
timworx
Registered User
 
Join Date: Jun 2012
Location: Newburgh, NY
Posts: 28
My Ride: Black '02 325i
Problem has been solved:
While the tensioner pulley does seem as though it is due for replacement soon, it was NOT the cause of this issue.

I was going to mention the "far fetched" idea earlier that there could possibly be something on the belt, causing tension to build and release every time it goes over a pulley. But I figured people would think I was crazy.

Well, that turned out to be the problem. The cause was a sh*tty Continental belt from PelicanParts.com. I looked at it after I got it off and you can see buildup on the grooves from the manufacturing process.
Went around the corned to Advance Auto for a new one and low and behold; no more horrendous sound.
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