Join Date: Mar 2002
Location: Sterling Hgts. , Michigan
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Re: Serpentine Belt Keeps coming off. I am puzzled. ??
I had problems with the serpentine system before, it was wierd too. It turned out that my harmonic balencer had gone bad and it started to come loose from the crank. I had belts just fly off (at 7000 rpm) and shred in the flex fan. I didn't realize the problem untill it was too late and the balencer broke the keyway out of the crank. Turned out the balancer couldn't handle the rpms of the motor......guess I'm rambling, but here is a few things to check,,,,buy the way, the tensioner will jump up and down when somethings wrong or sticky
1) crank pully too balancer too crank
2) power steering pully to pump, should be flush (very easy to bend if ya pry on it)
3) make sure the compressor pully spins very freely and doesn't have any hard spots, I've bought em with bad bearings before
4) notice any antifreeze, water pumps will keep ya guessing till they just go.
5)alt too, how much of a load are ya putting on the alt