1994 jeep xj overheating
#1
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Year: 1997
Model: Cherokee
Engine: 4.0
1994 jeep xj overheating
HELP my XJ WITH 4.0 is overheating 230 +after driving 20 or so miles at highway speeds in the heat of day with ac turned on. It runs cool (200 degrees) when ac turned off. I have a new dual core aluminum radiator with a working three electric fan set up and new 195 degree thermostate. The coolant looks clean no rust and no evidence of oil in coolant.
Last edited by crazy; 06-28-2017 at 05:32 PM. Reason: add details
#2
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Location: Phx Az
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Year: 1996
Model: Cherokee
Engine: 4.0
I live in Phx.. with ac on and driving on the freeway I usually see temps 240/250ish I have been told as long as it doesn't go into red or puke coolant run it jeeps run hot and just deal with it...and thats from a master tech/ jeep owner
#3
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Year: 1992
Model: Cherokee
Engine: 4.0
I am in Tucson, not too far from corona De Tucson. It shouldn't run 240 unless something is wrong in my opinion. With Ac on, it should run 220ish in my opinion
#4
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Year: 1996
Model: Cherokee
Engine: 4.0
My thoughts exactly...but I do know jeeps have heat soak issues. Also if the Jeep is modified it could be strianing the system even more. I have replaced all cooling system parts added trans cooler, hood vents. Prob spent close to 1500 on cooling system alone and nothing ever changes..just runs hot for me. Hoping when I put a new engine in (currently rolling with 262k) it fixes my heat issues...
#5
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Year: 1992
Model: Cherokee
Engine: 4.0
If it gets that hot with the Ac on, then something isn't working properly. Either a flow problem, blockage in the heater core, collapsed radiator hose... In the near future, I plan on upgrading everything on mine
#7
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Year: 1996
Model: Cherokee
Engine: 4.0
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#8
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Year: 1997
Model: Cherokee
Engine: 4.0
my be its because its been above 105 14 days in a row
Last edited by crazy; 06-29-2017 at 07:25 PM. Reason: correct typo
#9
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Year: 1996
Model: Cherokee
Engine: 4.0
#12
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Year: 1999
Model: Cherokee
Engine: 4.0
Yeah you guys seem way to cool with the idea of running 240....thats is way too high. A cooling system that's with no issues should be able to handle the heat.
#15
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Year: 1996
Model: Cherokee
Engine: 4.0
My whole system is new 97+ e fan zj fan clutch new water pump t stat t stat housing upper and lower hoses 3 core radiator. Hits temps like that every year nothing changes it.