96 XJ Getting hot at idle during AZ summer
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Joined: Apr 2020
Posts: 63
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From: Portland
Year: 1992
Model: Cherokee (XJ)
Engine: 4.0L
I'm not sure if the 96 has a separate dash gauge sensor located near the rear of the head but my 92 my sensor went bad and the only way I figured out it was bad was because the temp gauge would read inaccurately by about 10-30 degrees. I think you'll also find with a little research that there are a lot of Cherokee's that run 220-235 on a regular basis. And for what its worth I've also had issues with overheating when the AC is on. My two cents is that if its not reaching the 260 mark I wouldn't worry about it.
Thread Starter
Junior Member
Joined: Nov 2016
Posts: 31
Likes: 0
From: AZ
Year: 1996
Model: Cherokee (XJ)
Engine: 4.0L I6
I'm not sure if the 96 has a separate dash gauge sensor located near the rear of the head but my 92 my sensor went bad and the only way I figured out it was bad was because the temp gauge would read inaccurately by about 10-30 degrees. I think you'll also find with a little research that there are a lot of Cherokee's that run 220-235 on a regular basis. And for what its worth I've also had issues with overheating when the AC is on. My two cents is that if its not reaching the 260 mark I wouldn't worry about it.
Senior Member
Joined: Mar 2014
Posts: 952
Likes: 55
From: Eastern Long Island, NY
Year: 1996
Model: Cherokee
Engine: I6 Cyl / 4L
I just put in a more powerful electric fan. We discussed in this thread below. Hope this helps.
https://www.cherokeeforum.com/f2/che...hot-ac-257518/
https://www.cherokeeforum.com/f2/che...hot-ac-257518/
I'm pretty sure my temp readings are accurate. I used a temp gun the other day. I also stall sometimes when it gets in the 235° range, always at low rpm, or in reverse. Waiting on a new trans cooler line as a i have a leak, as well as the line is bent/crimped near where its going into the radiator (my mishap from trying to break the nut loose whilst replacing the radiator) which could be constricting flow to the trans, causing the trans to overheat? Idk at the point. Also putting in a 180° thermostat when it comes in with the trans lines tomorrow. Thinking about mounting some extra fans in front and maybe deleting the front grill.
This can only be attended by specialised chemical treatment, barring engine out and dismantle
If I was you, I would obtain the heavy duty stuff and flush the engine out, there is one for rust, and one for scale, takes a few cycles
Thread Starter
Junior Member
Joined: Nov 2016
Posts: 31
Likes: 0
From: AZ
Year: 1996
Model: Cherokee (XJ)
Engine: 4.0L I6
I am satisfied beyond reasonable doubt that many old engines, including those in Jeep XJ, overheat due to partial blockage of the engine cooling passages.
This can only be attended by specialised chemical treatment, barring engine out and dismantle
If I was you, I would obtain the heavy duty stuff and flush the engine out, there is one for rust, and one for scale, takes a few cycles
This can only be attended by specialised chemical treatment, barring engine out and dismantle
If I was you, I would obtain the heavy duty stuff and flush the engine out, there is one for rust, and one for scale, takes a few cycles
Thread Starter
Junior Member
Joined: Nov 2016
Posts: 31
Likes: 0
From: AZ
Year: 1996
Model: Cherokee (XJ)
Engine: 4.0L I6
You can pay 3 times as much for specialist engine flushing kits...Google them
You have to take special precautions not to plug the radiator with scum (a stocking)...or get a new one when done
I would recommend a new hose set after the heavy duty treatment, one part is acidic the other alkiline
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