1996 Jeep Cherokee Running Hot

Tiny
JTANNER737
  • MEMBER
  • 1996 JEEP CHEROKEE
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 138,000 MILES
My cherokee sometimes runs hot when stopped or towing a heavy load. I have replaced the thermostat/fan clutch/water pump/radiator/Temp Sensor. There are no visible leaks and the coolant level is full. Ideas?
Monday, May 25th, 2009 AT 9:37 AM

3 Replies

Tiny
MIKE H R
  • MECHANIC
  • 3,094 POSTS
A buildup of heat can be from a clogged circulating system. If it has not been flushed, I would thing it was a good idea. 2. With towing the temp will heat up because of the transmission is heating up. If you do regular towing would look into a external transmission cooler. This is not a bad idea anyway This cuts down on temp of engine and transmission. It by passes the readiator cooling the transmission fluid as the external cooler would cool down the transmission fluid. It also helps with fluid n working better. If you tow for a long period of time then would suggest not using oberdrive, if supplied. With higher gears the head builds up faster than can be cooled. With lower gear the fluid circulates faster and cools down faster.
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Monday, May 25th, 2009 AT 11:24 AM
Tiny
JTANNER737
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Thanks. But would a clogged system give me this problem just some of the time? During the same drive some times the motor will cool off and run normal and run hot later on. It does not do it 100% of the time but more than 50%.
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Monday, May 25th, 2009 AT 12:39 PM
Tiny
MIKE H R
  • MECHANIC
  • 3,094 POSTS
Yes it would depending on your driving habbits, someone who is in stop and go traffic the engine will need to be cooled more. I am re reading your post rto see if there would be anything else I could offer. With you saying the vehicle runs hot then cold with the same driving, there is another thing to check is the wires that go to the temp guage sending unit, make sure it ihas a good contact. Did this do it before you put the new thermastat in?
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Tuesday, May 26th, 2009 AT 11:06 AM

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