1994 jeep xj overheating
07-01-2017, 01:15 PM
#17
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Join Date: Jul 2017
Location: Havasu
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Year: ‘95
Model: Cherokee (XJ)
Engine: 4.0
I'm in Havasu so you Phoenix guys got it easy. 
Same situation here on my '95. If you were to let it just sit and idle with the air on it gets real close to the red. Scary to me. The guy I bought it from gave me a all alum. higher capacity (4 core?) radiator and I put it in last weekend. It seemed to help a little bit, meaning normal running around stuff it runs right at 210 or a bit lower if I'm on the highway.
I also put in a bottle of that Water Wetter fluid. Lots of peeps swear by it and it may have helped but hard to say. I think on ANY somewhat older engine, you don't want to see much over 220.
It's like you guys said though, how can you expect anything to run cool when it's a billion degrees out. I measured 153 in my cab the other day. Zoikes!!
Chris
Same situation here on my '95. If you were to let it just sit and idle with the air on it gets real close to the red. Scary to me. The guy I bought it from gave me a all alum. higher capacity (4 core?) radiator and I put it in last weekend. It seemed to help a little bit, meaning normal running around stuff it runs right at 210 or a bit lower if I'm on the highway.
I also put in a bottle of that Water Wetter fluid. Lots of peeps swear by it and it may have helped but hard to say. I think on ANY somewhat older engine, you don't want to see much over 220.
It's like you guys said though, how can you expect anything to run cool when it's a billion degrees out. I measured 153 in my cab the other day. Zoikes!!
Chris
07-01-2017, 04:03 PM
#18
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Join Date: Feb 2017
Location: Phx Az
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Year: 1996
Model: Cherokee
Engine: 4.0
I'm in Havasu so you Phoenix guys got it easy.
Same situation here on my '95. If you were to let it just sit and idle with the air on it gets real close to the red. Scary to me. The guy I bought it from gave me a all alum. higher capacity (4 core?) radiator and I put it in last weekend. It seemed to help a little bit, meaning normal running around stuff it runs right at 210 or a bit lower if I'm on the highway.
I also put in a bottle of that Water Wetter fluid. Lots of peeps swear by it and it may have helped but hard to say. I think on ANY somewhat older engine, you don't want to see much over 220.
It's like you guys said though, how can you expect anything to run cool when it's a billion degrees out. I measured 153 in my cab the other day. Zoikes!!
Chris
Same situation here on my '95. If you were to let it just sit and idle with the air on it gets real close to the red. Scary to me. The guy I bought it from gave me a all alum. higher capacity (4 core?) radiator and I put it in last weekend. It seemed to help a little bit, meaning normal running around stuff it runs right at 210 or a bit lower if I'm on the highway.
I also put in a bottle of that Water Wetter fluid. Lots of peeps swear by it and it may have helped but hard to say. I think on ANY somewhat older engine, you don't want to see much over 220.
It's like you guys said though, how can you expect anything to run cool when it's a billion degrees out. I measured 153 in my cab the other day. Zoikes!!
Chris
Last edited by Prerunner2; 07-01-2017 at 04:07 PM.
07-01-2017, 08:01 PM
#19
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Year: ‘95
Model: Cherokee (XJ)
Engine: 4.0
Man, I don't know bout post 13. To me, that's too hot if indeed the guage is reading accurate.
Check into that Water Wetter stuff. Easy enough to put in and avaiable at most parts stores. I ran my 95 a few days with the bigger radiator, then put in the WW. I think it helped
Check into that Water Wetter stuff. Easy enough to put in and avaiable at most parts stores. I ran my 95 a few days with the bigger radiator, then put in the WW. I think it helped
07-02-2017, 12:26 AM
#20
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Location: Broward County Fl.
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Year: 1989 xj sport 2dr
Model: Cherokee
Engine: 12 hole bosch Injectors
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.
