Could it be the water pump?
06-12-2014, 11:02 PM
#16
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Year: 2001, 1997
Model: Cherokee
Engine: 4.0L
Right check the electric fan. Maybe disconnect it temporarily and see. Just watch your coolant temps because that electric fan moves a lot of air.
06-13-2014, 07:47 AM
#17
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Year: 1999
Model: Cherokee
Engine: 4.0
I will keep an eye on the E fan. But when it happens the noise and vibration are so loud you can feel it just by touching the dash. Could that little efan make that kind of racket?
06-13-2014, 08:00 AM
#18
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Year: 1990
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06-13-2014, 08:07 AM
#19
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Year: 1998
Model: Cherokee
Engine: 4.0
I'd take the belt off and spin each of the pulleys by hand a bit and see if there's any play or if they roll smooth or not. If you find one clunking around, there's your culprit.
06-13-2014, 08:12 AM
#21
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Year: 1990
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It's not that tough to use our suggestions and just get it handled. Any further time spent on the computer will not find the issue. Agreed?
06-13-2014, 08:13 AM
#22
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Year: 1990
Model: Cherokee (XJ)
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Turning the AC on is a diagnostic tool at this point to determine if the e-fan may be the culprit.......
06-13-2014, 08:21 AM
#24
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06-15-2014, 09:26 AM
#25
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simply using your windshield defrost setting will turn on your a/c compressor.
maybe your a/c compressor bearing is shot.
maybe your a/c compressor bearing is shot.
07-03-2014, 12:03 PM
#26
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Year: 1999
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Engine: 4.0
It was the e-fan
How do i know you may ask... the fan completely blew up on the highway today punching a dime size hole in the radiator! 
07-04-2014, 01:08 AM
#29
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Year: 2001, 1997
Model: Cherokee
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The e-fan blew up when it was running. That means the Jeep thought it should be running. It helps out when you're idling in traffic, after you shut it off and heat soak takes effect and you start it back up, when you're A/C is on, or when your fan clutch is weak. Personally I would not run without it unless I lived somewhere it was never more than 75F. In Knoxville you've got 90's in the summer and it ain't like 40 never backs up.
07-06-2014, 06:37 PM
#30
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Year: 1999
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So. The answer is yes. I've run it hard on a family staycation, privy a hunted miles a day - idling in traffic etc and it stays COOL. Right at 200ish beer more than 210. Brand new mechanical fan clutch may be contributing to normal temps as I thought that was prob before e fan blew up.