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Old 12-05-2012, 09:32 PM
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drive by72 drive by72 is offline
I feed trolls
Location: Snowy Wisconsin
 
Join Date: Nov 2010
Posts: 4,950
Mein Auto: 3 series
No need. If my test doesnt provide any results, next would be remove idler/tensioner pulley. Spin it with your finger in the middle. If it sings and freewheels for a long time, its likely bad. A good bearing wont make a "mmmmmmmmmm" noise at all, and will have a little bit of rolling resistance. It should spin, but not for a super long time. Its difficult to say when its intermittent.
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1997 328iS... HR coilovers, Brembo F40 calipers, camber plates, it needs a CUMMINS!!

1990-somethin Chevy K3500... Cummins, cab swap, 5 speed, and lots of motor work. 20 MPG, 40 PSI, 507 ft/lbs torque