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94 XJ over heating

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Old Jun 26, 2013 | 10:39 PM
  #1  
94XJJEEP's Avatar
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From: Lancaster,PA
Year: 1994
Model: Cherokee
Engine: straight 6
Default 94 XJ over heating

I have a 1993 jeep Cherokee an I can't get it to stop over heating these are the things I've done to it
1- new water pump
2- new thermostat with a temp of 165
3- both temp sensors
4- new radiator
5- an a rad flush
So if any 1 has any ideas pleas let me know
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Old Jun 26, 2013 | 11:42 PM
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From: branson mo.
Year: 1998
Model: Cherokee
Engine: 4.0
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Did you replace the hoses? I've read on here that a few guys replaced their hoses and the new ones didn't have the coiled up metal inside them. When they would accelerate the hose would actually collapse and not let the coolant flow. Worth a shot. Hopefully it's not a head gasket.
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Old Jun 26, 2013 | 11:44 PM
  #3  
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From: Texas
Year: 1993
Model: Cherokee
Engine: 4.0L
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What temps does it reach when overheating and under what conditions -- idling, highway, trail, always.

Have you checked clutch on mechanical fan? Is aux fan working?

You mention rad flush, I assume you did a complete heavy duty flush for complete system.

Assume new 16# rad cap?

The XJ 4.0 is designed for a 195* thermostat. As you have learned, the tstat designated temperature has virtually no effect on overheating. The designated tstat temp determines when the thermostat opens and after it opens, other factors control the operating temp of the system.
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Old Jun 27, 2013 | 03:09 AM
  #4  
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From: Colorado Rockies
Year: 1989
Model: Cherokee
Engine: one guess
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make sure there is no air trapped in the coolant system.
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Old Jun 27, 2013 | 05:57 AM
  #5  
94XJJEEP's Avatar
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From: Lancaster,PA
Year: 1994
Model: Cherokee
Engine: straight 6
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Originally Posted by 98xxxj
Did you replace the hoses? I've read on here that a few guys replaced their hoses and the new ones didn't have the coiled up metal inside them. When they would accelerate the hose would actually collapse and not let the coolant flow. Worth a shot. Hopefully it's not a head gasket.
No I did not replace them cus I heard the same thing
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Old Jun 27, 2013 | 05:59 AM
  #6  
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From: Lancaster,PA
Year: 1994
Model: Cherokee
Engine: straight 6
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Originally Posted by mister k
make sure there is no air trapped in the coolant system.
There is nothing the system went throughout the the cooling system
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Old Jun 27, 2013 | 06:34 AM
  #7  
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From: Lancaster,PA
Year: 1994
Model: Cherokee
Engine: straight 6
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Originally Posted by Pelican
What temps does it reach when overheating and under what conditions -- idling, highway, trail, always.

Have you checked clutch on mechanical fan? Is aux fan working?

You mention rad flush, I assume you did a complete heavy duty flush for complete system.

Assume new 16# rad cap?

The XJ 4.0 is designed for a 195* thermostat. As you have learned, the tstat designated temperature has virtually no effect on overheating. The designated tstat temp determines when the thermostat opens and after it opens, other factors control the operating temp of the system.
No I did not get a new rad cap
An it dos it all the time no matter what an the electric fan only comes on when I have the heater on
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