Problem with belt
Thread Starter
Intermediate
Joined: Apr 2003
Posts: 38
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From: Baker LA
Problem with belt
My dad noticed a squeaking noise from the engine and thought it may be an alternator bearing going bad. He checked and found that the tensioner pulley was making noise and that the belt had slipped two to three ribs over on the crank pulley. He readjusted the belt but, once he started it, it slipped again. Anyone have an idea what could be causing the belt to move?
Race Director
Joined: Sep 1999
Posts: 12,434
Likes: 916
From: CONCORD NC
Re: Problem with belt (DadsC5)
Sounds like one of the pulleys is mis-aligned. Some people have had the crank pulley/damper come loose and "wobble", but it should be visibly out of line.
Regardless, you should have it looked at before you loose the belt.
Dave
Regardless, you should have it looked at before you loose the belt.
Dave
Racer
Joined: Nov 2000
Posts: 327
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From: Marblehead, Mass, 2003 Corvette Convertible Black/Black/Black
Re: Problem with belt (DadsC5)
I had the same thing happen. The belt walked all the way off! Replaced the belt tensioner pulley assy and belt and the problem went away. This is a common GM problem. :mad
Thread Starter
Intermediate
Joined: Apr 2003
Posts: 38
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From: Baker LA
Re: Problem with belt (BLACK86)
When the belt is on the crank, it is slightly off center on the guide pulley attached to the block. When the car is started, it moves 2 ribs off the crank pulley and is then centered on all other pulleys. That's why I'm thinking it may be the harmonic balancer. Looks like a dealer deal cause the crank requires a special puller it looks like.
Racer
Joined: Aug 2002
Posts: 355
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From: Cenntennial CO
Re: Problem with belt (DadsC5)
My dad noticed a squeaking noise from the engine and thought it may be an alternator bearing going bad. He checked and found that the tensioner pulley was making noise and that the belt had slipped two to three ribs over on the crank pulley. He readjusted the belt but, once he started it, it slipped again. Anyone have an idea what could be causing the belt to move?
Thanks,
:cheers:
Thread Starter
Intermediate
Joined: Apr 2003
Posts: 38
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From: Baker LA
Re: Problem with belt (99inDenver)
It's was after initial start-up. Turns out the harmonic balancer was bad and the tensioner was slightly bent. Dealer charge---750 bucks. Big rip-off since most of the items they charged for were marked up 50%. But this is a deal for another thread.
