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1995 Other Buick Models

Tiny
CFORSTAL
  • MEMBER
  • 1995 BUICK
Engine Performance problem
1995 Other Buick Models V8 Front Wheel Drive Automatic

the serpentine belt broke, and the idler pully came off, I replaced the belt, but the idler pully is jumping, and the car is runnimg rough. Came you tell me what is causing this?
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Monday, December 14th, 2009 AT 9:46 AM

1 Reply

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
You could have a couple of problems here. You battery may be low due to the belt breaking and then not keeping the battery charge up, especially if the belt isn't tight. If the idler is jumping check on this site for belt routing diagram and make sue yours is correctlyrouted. Then make sure the pulley is tight as it should n't be jumping around. You may need another belt tensioner. That may be worn. If you don't fix it you'll be replacing our serpentine belt once more.
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Tuesday, December 15th, 2009 AT 5:39 PM

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