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Belt Tensioner and Water Pump

Tiny
CSCHOON
  • MEMBER
  • JEEP CHEROKEE
I have a 2000 Jeep Grand Cherokee, 4.0 liter, 2 wheel drive, 102,000 miles.

Replaced waterpump last Feb. My car is now making loud chirping and knocking noises, so took my car to the same garage. They said the BELT TENSIONER is worn out which made the WATER PUMP fail. Can this happen or are they trying to cover up a mistake they made last Feb?

* Another note, last June my SERPENTINE BELT broke while on a road trip and I had it replaced. Can this have anything to do with the BELT TENSIONER and WATER PUMP failing?
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Thursday, August 10th, 2006 AT 8:50 PM

1 Reply

Tiny
CHARLES ANDERSON
  • MEMBER
  • 4 POSTS
Couple of things:
1. Serpentine belt may have been adjusted to tightly, causing undue tension on the pump shaft. This can cause the bearings within the pump to fail.
2. An overtightened belt can cause the belt tensioner wheel to fail.
I think their answer is crap. It's hard to make the tensioner wheel fail unless the belt was way to tight.
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Monday, January 29th, 2007 AT 12:55 PM

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