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Old 12-18-2012, 10:44 AM   #1
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2000 tj engine squeal

I noticed a faint squealing noise coming from what sounds like the serpentine belt I'm looking for some causes it might be or ways to fix it it's a 2000 tj sport 4.0 l6 with 90,000 miles

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Old 12-18-2012, 10:51 AM   #2
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Remove the belt. And check the idler and/or tensioner. If all is well replace the belt.

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Old 12-18-2012, 10:58 AM   #3
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Okay that's what I thought but didn't know if there was anything else people encountered
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Old 12-19-2012, 08:50 AM   #4
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Dunno, I've got the same problem, replaced both idlers, and the serp belt, squeal is still there.
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Old 12-19-2012, 10:01 AM   #5
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Without actually being under your hood you are going to spend a lot of money replacing parts anyone thinks it could be. The best thing to do is have a shop look at it if your not a mechanic.
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Retired my 94 YJ 4cyl 5spd @ 200K
Now in a 04 TJ 4cyl 5spd CV @120K+
Both as a commuter vehicle in NW, NJ
April 2012.downsized and now a 99er.
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Old 12-19-2012, 03:45 PM   #6
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You can trouble shoot it by spraying a very slight amount of WD40 on the outside (flat surface) of the belt and listen for a change. If no change then spray a slight amount on the groves and see if the noise goes away. If the nose does not change then the problem is most likely a bad bearing. If it does change you might try a new belt. The WD40 will evaporate after a few minutes.

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