Question about 1990 Jeep Comanche

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Heating problem I have a 1990 Jeep Comanche with the 4.0L engine. I have rebuilt the motor, replaced waterpump, radiator, fan clutch, all sensors and a 160degree thermostat. And still the truck gets up to 200-230degrees. Need some direction to go im stuck on it.

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Anywhere up to about 190-220 is normal. You might want to wire your fans up to a switch so you can run them all the time/at your discretion if you don't like it that hot.
If you get a second and found this helpful I would greatly appreciate a rating.
Thanks,
Lee

Posted on Jun 21, 2008

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