SQUEEKY serpentine
08-03-2011, 04:09 PM
#1
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Year: 1991
Model: Cherokee
Engine: 4.0 L, 242 CID
SQUEEKY serpentine
My belt is driving me KOOKY. 
I cant seem to get a straight answer out of anyone as to why and moreover, how do I stop it!
I cant seem to get a straight answer out of anyone as to why and moreover, how do I stop it!
08-03-2011, 04:23 PM
#2
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Year: 1992
Model: Comanche
Engine: 4.0
Go out and tighten it down. Mine squeals like a MOTHER, when it just gets a bit loose. Id go try that real quick it only takes but two mins.
08-03-2011, 04:32 PM
#3
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Year: 1991
Model: Cherokee
Engine: 4.0 L, 242 CID
It seems pretty darn tight. BUT?, i think i may have done it incorrectly. i only loosened the rear bolts on the Idler...could be askew now is what I'm thinking..or it could be the gremlins have moved in too
08-03-2011, 04:56 PM
#4
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Year: 1992
Model: Comanche
Engine: 4.0
Mines tight too, I dont know it works for me. It starts to squeal, and i tighten it and doesnt do it anymore
08-03-2011, 04:56 PM
#5
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Year: 1994
Model: Cherokee
Engine: 4.0
You tighten it with the screw on the bottom of the powersteering pump. Look up "how to change belt" and there will be a write up on how to do it. Its fairly simple.
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08-10-2011, 01:10 PM
#8
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Year: 1991
Model: Cherokee
Engine: 4.0 L, 242 CID
misaligned pulley
I have identified this as the pulley. the clutch fan it is attached to seems to be slightly too far forward. (keep in mind i did just replace it) as i stare and stare at it i can not figure out HOW it would not just line up exactly how it was prior to removal. there are no washers, spaces, anything different in how it is attached. i really do not want to have to take the whole radiator, shroud, fan out again...dangit...guess i have a squeaky Xj now hm....bummer.
09-27-2011, 12:32 AM
#10
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Year: 1991
Model: Cherokee
Engine: 4.0 L, 242 CID
took off the belt,used a brass bristle brush and break clean on all the pulleys,install new belt. squeak gone.
09-27-2011, 07:37 AM
#12
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Year: 94
Model: Cherokee
Engine: 4.0
Why
loose belt, misaligned pulleys, bearing going out in something belt driven, harmonic balancer going bad, oil on belt/pulleys.
How to stop it
Repair, replace or tighten as needed.
loose belt, misaligned pulleys, bearing going out in something belt driven, harmonic balancer going bad, oil on belt/pulleys.
How to stop it
Repair, replace or tighten as needed.
09-27-2011, 10:44 AM
#13
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Year: 1991
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Engine: 4.0 L, 242 CID
squeak gone
09-27-2011, 08:51 PM
#14
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Year: 1992 1998
Model: Cherokee
Engine: 4.0
Just replaced idler pulley and the noise got less ear piercing but is still there...
I noticed definite pulley misalignment though.
FWIW... I have access to Alldatapro and there is a TSB for Squeaky belts on 4.0 XJs... The TSB says the power steering pump pull is not lined up correctly in relation to the pump shaft. I forget what it said for plastic pulleys, but for the metal pulley, the tip of the pump shaft should be flush with the pulley. Not protruding or recessed at all.
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