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      03-10-2011, 11:11 AM   #7
shifterboy45
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Drives: 2009 335i Coupe
Join Date: Feb 2009
Location: North by Northwest

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Quote:
Originally Posted by m-power- View Post
I had this issue before, went to a dealer and they replaced belt as well as mechanical belt tensioner. It worked, the squeaky sound has gone. Also try cleaning the engine bay around belt area with special cleaner and pressure water. Hope this will help.
at that mileage and your your part of the country (colder), i would put money that its the tensioner assy --

if i remember correctly there is are 2 deflection pulleys and a tensioner -- id replace them all. kinda hard to know which one is squeaking, or replace 'em one at a time til the noise goes away ---
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