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Unread 10-18-2013, 04:41 AM   #1
98jpchero
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1999 XJ Cherokee 
 
Join Date: Aug 2010
Location: Rockford, Illinois
Posts: 13
Belt squeal after some light offroading

Hello, I have a 99' xj with the 4.0l which i just brought earlier this week. Went to test out the 4wd in some mud/water and ever since i've had a nasty belt squeal. Seems to only do it when the a/c clutch kicks on. I pulled the relay and it stops. Would that harm anything running with the relay out? Would some water have ruined the bearing on the a/c clutch? It also squeals sometimes when i take off from a stop light or on start up even with the relay out, but not nearly as bad. Any ideas/help would be help me out. I know a fair amount about cars, but i'm no mechanic. Thanks!

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Unread 10-18-2013, 10:46 AM   #2
Paradise XJ
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1990 XJ Cherokee 
 
Join Date: Jan 2007
Location: Paradise, CA, Northern California
Posts: 2,148
Have you checked and/or tightened the belt?

The belt on a Jeep 4.0 has to be very tight. Much tighter than just about any other vehicle I've ever had. Squealing belt after water (especially muddy water) is pretty indicative of a not quite tight or worn belt.
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Unread 10-20-2013, 06:57 AM   #3
98jpchero
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1999 XJ Cherokee 
 
Join Date: Aug 2010
Location: Rockford, Illinois
Posts: 13
Thanks! Ill snug up the belt a bit and see what happens.
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Unread 10-25-2013, 09:34 AM   #4
98jpchero
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1999 XJ Cherokee 
 
Join Date: Aug 2010
Location: Rockford, Illinois
Posts: 13
Update, I snugged up the belt and inspected it and it looks good. Ended up being the a/c clutch. Ill just keep the relay out until the summer time. Wont need the a/c anytime soon here in northern illinois.
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Unread 10-25-2013, 09:36 AM   #5
M35A2
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1995 XJ Cherokee 
 
Join Date: Jun 2012
Location: Monrovia, California
Posts: 693
Quote:
Originally Posted by 98jpchero View Post
Wont need the a/c anytime soon here in northern illinois.
Except to defrost the winders.
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