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Old 02-04-2007, 11:53 AM   #11
Registered User
Join Date: May 2004
Location: Atlanta
Posts: 2
My Ride: ED 5sp 325i
This is a useful thread as I at my wits end with a squealing belt on the 2003 325i I am about to sell. For the last three winters it squeals on startup and three dealers have not been able to replicate the noise

In November they changed the v-belt and it still squeals
This week the hydraulic tensioner was changed and it made the problem worse

This morning I had my wife start the car while I watched the belt. I can see it slip while the squeal is happening so am sure that is the source of the noise.

After about 5 dealer visits over the years I have decided to do some DIY and replace every possible part that could be at fault. What do you all recommend? Does anyone think cleaning the pulleys with alcohol or Emory cloth would help?
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