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90 chwerokee over heating

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Old Aug 6, 2011 | 09:18 PM
  #1  
TerBeau's Avatar
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From: Dillsburg pa
Year: 1990
Model: Cherokee
Engine: 4.0, 6cyl
Default 90 chwerokee over heating

halp!! need fresh minds. i towed a motocycle home the other day and the second i stopped and shut the jeep off i got hot coolant out my res cap. i thought it was my thermostat. replaced that still no fix, i had put a new pump in a few months back and it works fine(and my belts are properly installed) i have no heat and it seems as though its not circulating. thought it culd be an air bubble and such but i also know that sometimes i culd have a clog somewere and want to hear other peoples thoughts and any personal experiances are welcome! please help i miss driving my jeep! :h elp:

btw. any haters who want to thrash my thread saying oh just use the search bar. shut up please i searched and did some looking before i posted.thanks
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Old Aug 6, 2011 | 09:23 PM
  #2  
stereodesigner's Avatar
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From: Florida
Year: 1998
Model: Cherokee
Engine: 4.0
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Not familiar with the jeeps cooling but i would do a complete radiator flush, then once you do that fill the radiator itsself up with coolant (then leave the lid off) start the vehicle when your thermostat opens up it will cycle the coolant you can look with a flashlight and see if you have any clogged up radiator parts (some of them) once it starts cycling you should see water spirting out if there is only like 1 or 2 spirting you deff have some clogging, dont run for too long fill up with the correct amount of coolant after it cycles once
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Old Aug 6, 2011 | 09:32 PM
  #3  
TerBeau's Avatar
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From: Dillsburg pa
Year: 1990
Model: Cherokee
Engine: 4.0, 6cyl
Default

yea that an idea. i did forget i seen the res tank actually filling up thru the smaller hose at the top. so mayben it is cyclign idk. im not big on cooling systems myself
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Old Aug 6, 2011 | 09:36 PM
  #4  
xjcrazy's Avatar
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Joined: May 2009
Posts: 196
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Model: Cherokee
Default Cooling issues are fun

I fixed mine by replacing the radiator and flushing the heather core and then burping the system to get the air out. A 21 year old radiator can have alot of rust and crap in them. The radiator i got was from napa and it was a 3 row. Problem solved problem fixed. Hopefullly.
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Old Aug 6, 2011 | 11:31 PM
  #5  
Iceman09's Avatar
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From: Wyoming
Year: 1988
Model: Cherokee
Engine: 4.0
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I was just recently having this same prob on my 88. I ended up replacing the radiator and it has been running perfectly ever since.
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Old Aug 7, 2011 | 08:21 AM
  #6  
TerBeau's Avatar
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From: Dillsburg pa
Year: 1990
Model: Cherokee
Engine: 4.0, 6cyl
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im tempted to do just that. replacing the rad.
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Old Aug 7, 2011 | 09:04 AM
  #7  
Firestorm500's Avatar
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Joined: Apr 2009
Posts: 4,734
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Year: 2015, 2012
Model: Grand Cherokee (WK2)
Engine: 3.6L
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What did the temp gauge say while towing?

And just prior to shutoff?
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Old Aug 8, 2011 | 02:06 AM
  #8  
xjcrazy's Avatar
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Posts: 196
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Model: Cherokee
Default Its worth a shot

If it works then thats just awesome. If it doesnt well atleast you have one less thing to think about.
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