Strange Belt Noise -

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post #1 of 4 Old 01-23-2013, 09:35 PM Thread Starter
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1998 TJ Wrangler 
Join Date: Jun 2012
Location: Pasadena
Posts: 279
Strange Belt Noise

I've got a strange whirring noise that appears to be coming from my (disconnected) AC unit. It fluctuates in volume. I'm assuming it's a bad bearing somewhere. If it is the AC unit, do I really have to replace the whole unit, which I don't use anyway?

aldersonfilm is offline  
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post #2 of 4 Old 01-23-2013, 11:07 PM
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2000 XJ Cherokee 
Join Date: Dec 2006
Location: Coarsegold, CA
Posts: 1,203
The AC clutch bearing may be bad. If it gets bad enough it will freeze and that is not good. Loosen the belt, and spin the AC clutch. If it is barely moves then you know the problem. If you have it disconnected just get one with a good bearing from junkyard and put it in, no charging required.
filluptrk is offline  
post #3 of 4 Old 01-23-2013, 11:13 PM
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Join Date: Jan 2013
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If im not mistaken it could be a water pump barring. Check to see if the belts are loose, if the pump itself is loose or just the barring.
wheelbagans4 is offline  
post #4 of 4 Old 01-24-2013, 09:09 AM
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1999 XJ Cherokee 
Join Date: May 2009
Location: Skook
Posts: 609
The AC compressor on my 99 is different thn yours, but maybe they are built similar.
The clutch bearing on my compressor seized.
I went to the junkyard and grabbed another compressor 20$. I was able to remove the pulley/clutch bearing (a bolt or more and some snap rings hold it on.

Swap the pulley/clutch bearing over.
cory4um is offline  

air conditioner , belt noise , noise , noise whistle noise

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