Could my water pump pulley be the problem?

10

Asked by Mark Jun 01, 2021 at 01:49 AM about the 2008 Dodge Nitro SLT 4WD

Question type: Maintenance & Repair

I have replaced the tension assembly,
serpentine belt, and compressor and
whenever I turn on the air the belt still squeals.
The water pump pulley looks worn and very
shiny. My question is could that be worn
enough to cause the squealing even though
there is no noticeable problem with the pumps
function?

4 Answers

38,625

If everything is clean a worn belt can cause the squealing , A small oil leak can also cause it to squeal but a little belt dressing can take care of that . Belt dressing - wiper fluid - painters caulk just about anything can stop the squealing . But if it's persistent there's another problem . Has the belt been replaced ? Is it the correct size ?

1 people found this helpful.
154,585

Check the belt tensioner. If it's at or near the end of its travel you probably need a shorter serpentine belt. If that's ok, clean the water pump pulley. It may be glazed. That's very unusual but it can happen. If all else fails spray some belt dressing on the serpentine belt to help it grip better. Hope that helps! Jim

1 people found this helpful.
10

I will definitely try the belt dressing prior to the water pump! Thanks

1 people found this helpful.

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