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over heating

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Old Apr 24, 2012 | 11:33 PM
  #16  
DESERTXJ206's Avatar
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From: Glendale,Az
Year: 1990
Model: Cherokee
Engine: 4.0l 6Cyl
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Originally Posted by my89xj

That's what happen to me?
Yeah i converted my whole system and am still running warm. From a cold start to 6 miles to work I reach 230-240*
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Old Apr 25, 2012 | 12:22 AM
  #17  
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From: phoenix az
Year: 1989
Model: Cherokee
Engine: 4.0l 6 cylinder
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Originally Posted by DESERTXJ206

Yeah i converted my whole system and am still running warm. From a cold start to 6 miles to work I reach 230-240*
I don't have my overflow bottle connected and I don't over heat and it was 103 in Phoenix today
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Old Apr 25, 2012 | 12:25 AM
  #18  
DESERTXJ206's Avatar
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From: Glendale,Az
Year: 1990
Model: Cherokee
Engine: 4.0l 6Cyl
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Originally Posted by stev-o

I don't have my overflow bottle connected and I don't over heat and it was 103 in Phoenix today
Yeah I'm in Phoenix as well. I'm not sure whats my issues.
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Old May 20, 2012 | 12:35 AM
  #19  
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From: phoenix az
Year: 1989
Model: Cherokee
Engine: 4.0l 6 cylinder
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Now I'm overheating
Only at stop lights
What is it my fan clutch because it had been replaced wen bought t it
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Old May 20, 2012 | 08:49 AM
  #20  
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From: Arizona
Year: 1988
Model: Cherokee
Engine: 4.0 I6
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Sounds like your electric fans not kicking on. Mine heats up if it idles to long at the lights. Should kick on at 210deg.
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Old May 20, 2012 | 08:53 AM
  #21  
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From: Missouri
Year: 1998
Model: Cherokee
Engine: I6 4.0 L
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Originally Posted by WyoWagner
my 1988 jeep cherokee is building up pressure and shooting coolant out of the cap on the reserve tank which is also the radiator cap ive replaced the water pump that wasnt working ant the thermostat. anything is helpfull if you have any ideas
Check your electric fan relay
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Old May 20, 2012 | 09:00 AM
  #22  
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From: Frederick, MD
Year: 1989
Model: Cherokee
Engine: 4.0
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Originally Posted by Nperryman

Check your electric fan relay
Were is that relay located?
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Old May 20, 2012 | 09:00 AM
  #23  
BotakBeng's Avatar
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From: Las Vegas
Year: 1999
Model: Cherokee
Engine: 4.0
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Originally Posted by WyoWagner
my 1988 jeep cherokee is building up pressure and shooting coolant out of the cap on the reserve tank which is also the radiator cap ive replaced the water pump that wasnt working ant the thermostat. anything is helpfull if you have any ideas
I know you just replaced the cap but i suggest you get another one....could be a faulty one you got.
Did you burp the cooling system.
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Old May 20, 2012 | 09:32 AM
  #24  
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From: Nor-Cal Coast
Year: 90,84
Model: Cherokee
Engine: 4.0,2.5
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Originally Posted by my89xj
Were is that relay located?
Fan relay is alone there inside the left fender. It should come on at 217* or so, or when on defrost, and also on AC...but only if the AC works I think.
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Old May 20, 2012 | 09:35 AM
  #25  
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From: Frederick, MD
Year: 1989
Model: Cherokee
Engine: 4.0
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Originally Posted by DFlintstone

Fan relay is alone there inside the left fender. It should come on at 217* or so, or when on defrost, and also on AC...but only if the AC works I think.
Ok so I did replace the correct one, thanks for clarifying.
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Old May 20, 2012 | 09:44 AM
  #26  
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From: Nor-Cal Coast
Year: 90,84
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Engine: 4.0,2.5
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There is a two wire plug for the fan temp sensor there by the air cleaner. You can jump the two Jeep side for a sec and see if the fan comes on. Edit: I mean connect..
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Old May 20, 2012 | 09:54 AM
  #27  
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From: Black Hills South Dakota
Year: 1999
Model: Cherokee
Engine: Straight 6
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I just read through the post and it seems you need to check a few basics, i know my 1999s so if none of this applies disregard...

Confirm the electric fan is working. Let the jeep idle with the hood up and watch/listen for the fan. If it overheats without the fan kicking on then it's time to check the fan, A/C, relay, and a few other things.

Also check for circulation, when the jeep is warm feel both rubber tubes going through the engine block, they should both be hot. If not you're not circulating, possibly due to a bad thermostat, water pump, or clog.

See how that goes.
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Old May 20, 2012 | 01:05 PM
  #28  
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From: phoenix az
Year: 1989
Model: Cherokee
Engine: 4.0l 6 cylinder
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Originally Posted by DirtyVerdeXJ
Sounds like your electric fans not kicking on. Mine heats up if it idles to long at the lights. Should kick on at 210deg.
My efan I wired to always be on
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