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Overheating issue

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Old Jul 9, 2010 | 10:34 PM
  #1  
kcenderjim's Avatar
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From: PA
Year: 90
Model: Cherokee
Engine: 4.0
Default Overheating issue

i have a 90 xj and replaced the rad, waterpump and thermostat and in the heat of the day it still jumps to like 225 or 235. if i remove the inner fender wells will this dissipate the heat any? any other suggestions.....
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Old Jul 9, 2010 | 10:59 PM
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Year: 95
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Flush the cooling system that might help
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Old Jul 9, 2010 | 11:06 PM
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The inner fender well is simply a plastic liner for protection from rocks and road debri. Removing it will not open up any additional passages for airflow.
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Old Jul 9, 2010 | 11:12 PM
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Originally Posted by kcenderjim
i have a 90 xj and replaced the rad, waterpump and thermostat and in the heat of the day it still jumps to like 225 or 235. if i remove the inner fender wells will this dissipate the heat any? any other suggestions.....
Is your electric fan coming on? Did you buy a standard single core radiator or did you get a three core? What temp does it run on the highway compared to city driving?
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Old Jul 9, 2010 | 11:21 PM
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yeah the cooling fan not coming on would do it
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Old Jul 10, 2010 | 12:17 AM
  #6  
IT'S AN XJ THING's Avatar
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Year: 97
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Hey, what kind of coolant do you run. I recently had an over heating problem and found that I was running to much coolant. So what did was flushed the system and added one gallon of 50/50 and the rest water. I also didn't just do a half a$$ flush the system. I bought a prestone back flush kit. Also, when I burped it a jacked up the front end up to guarantee the air to come out. It takes about 30 to 40 min to burp it 100% correctly, keep doing it tell no more bubbles come out.
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Old Jul 22, 2010 | 09:21 AM
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i figured out that the fan is not coming on at all. i am gonna run a toggle to it and try that.
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Old Jul 22, 2010 | 10:59 PM
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that should fix your problem i did the same to mine so i can turn it on when im off road
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