High Pitch Noise - Serpentine Belt? - JeepForum.com
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post #1 of 5 Old 02-11-2002, 09:57 AM Thread Starter
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Location: West Chester, Pennsylvania
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High Pitch Noise - Serpentine Belt?

Hi everybody,

Whenever I start up my 95 Wrangler in the morning it usually makes a high pitch noise. I had an A/c put in about a year ago - and it comes from the area where the compressor is. I think it is the serpentine belt slipping a little - the sound usually goes away after a while of driving. When it is wet, it keep on making some kind of high pitch noise.

My question now is: How do I tighten the belt? I heard it's a pretty straight forward job - but I am not quite sure.

Thanks a lot for any input,


'99 WJ Grand Cherokee Laredo
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post #2 of 5 Old 02-11-2002, 11:10 AM
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The main portion of the belt tensioner relies on the power steering pump.
The pump has four bolts that you need to make loose so you can tighten up the belt.
There are two bolts in the front and two at the rear.
The two in front--- one on top and the other under the pump the side real holder bolt.
The two in the rear--- under the pump below the intake manifold (really weird position to get at)
the second right next to the intake manifold behind the pump.
The tensioner bolt is on the drivers side under the exit portion of the pump.
tighten up the bolt it will feel like its not moving but it actually is.. tighten up the belt until you have about 1/4 - 3/8 of play on the belt and that should resolve the noise.

Hope this helps

See y'll on the trail.
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post #3 of 5 Old 02-11-2002, 03:58 PM Thread Starter
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Thanks a lot - I will try to do this!

'99 WJ Grand Cherokee Laredo
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post #4 of 5 Old 02-11-2002, 10:00 PM
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If that doesn't help, I recently had a high pitch squeeling when i first started it up, then it would go away. I took it to the shop, and they said it was the starter. So i replaced it for around $100.

'94 YJ 4 banger :( 4" ProComp suspension 32x12.5 a/t's, flow's, kn air filter charger, and lots of little appearance mods.
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post #5 of 5 Old 02-15-2002, 05:09 PM
NOVA Jeeper56
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Yes he is right about tightening the belt you may also want to check your fan clutch. Is located on the front of the fan i believe, its like 50$$

'94yj, rancho lift kit, 31x10.50 BFG mud's,intake,exhaust,wheels, warn 6000lb winch,lights,
bumpers/brush guard
(used to be known as BiggMike56)
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