Ongoing overheating 96 Cherokee, EVERYTHING Replaced (NEED HELP!)
CF Veteran
Joined: Nov 2009
Posts: 8,172
Likes: 17
From: The Republic of TEXAS
Year: 1998
Model: Cherokee
Engine: 4.0L HO
Thread Starter
Junior Member
Joined: Aug 2012
Posts: 51
Likes: 0
Model: Cherokee
CF Veteran
Joined: Mar 2010
Posts: 47,923
Likes: 38
From: Broward County Fl.
Year: 1989 xj sport 2dr
Model: Cherokee
Engine: 12 hole bosch Injectors
I did all you did, and more.
First head was cracked, replaced it with a lower -mileage used one.
Blew out the rear head freeze plug 3 times.
Rebuilt the block and head, still ran hot. Head was Magnafluxed.
Pulled that head off and replaced it with a 3rd (rebuilt) one.
That cured it.
So your head is probably cracked internally where it can't be found, like mine was.
'92 4.0 Laredo.
First head was cracked, replaced it with a lower -mileage used one.
Blew out the rear head freeze plug 3 times.
Rebuilt the block and head, still ran hot. Head was Magnafluxed.
Pulled that head off and replaced it with a 3rd (rebuilt) one.
That cured it.
So your head is probably cracked internally where it can't be found, like mine was.
'92 4.0 Laredo.
CF Veteran
Joined: Mar 2010
Posts: 47,923
Likes: 38
From: Broward County Fl.
Year: 1989 xj sport 2dr
Model: Cherokee
Engine: 12 hole bosch Injectors
air flow issue guys quit over thinking it up grade fan clutch to grand cherokee one
CF Veteran
Joined: Aug 2009
Posts: 5,676
Likes: 301
From: WV
Year: '96
Model: Cherokee
I agree with you that it sounds like an air flow issue. But the only major difference between his cooling system and a std XJ one is the radiator. He's says it was doing the same thing with an OEM radiator,which I'll take for granted it and the fan clutch were in workable condition,why would he have an air flow issue?
I did put a ZJ fan clutch on mine when I recently redid my system but whether I would have gotten the same results with a std one I don't know.
I did put a ZJ fan clutch on mine when I recently redid my system but whether I would have gotten the same results with a std one I don't know.
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Joined: Jul 2012
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When my jeep did that (over heating when not moving) it was a valve. I can't remember the name of it.
Follow the medium top radiator hose, the one next to the main large hose. You see the valve it connects too, along with a bunch of other hose.
Replacing that fixed it for me. Sorry I cant remember the part name.
Follow the medium top radiator hose, the one next to the main large hose. You see the valve it connects too, along with a bunch of other hose.
Replacing that fixed it for me. Sorry I cant remember the part name.
Thread Starter
Junior Member
Joined: Aug 2012
Posts: 51
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Model: Cherokee
It overheits while moving too ... It overheats during driving or after driving and coming to an idle... Top hose is so hot and tight. Just drove to the store on the way it started to get really hot so I blast the heater to keep at 210