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XJ Ask the Question Thread
::CF Moderator::
Join Date: Aug 2011
Location: Prescott, Az
Posts: 43,971
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Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Yowza.
I looked at a lot of the documentation related to overheating and could not find anything referencing my specifc situation. Here goes...
Under normal operation, no problems at all. On a hot day, with the AC on, at a long traffic light or anytime I stop travelling at speed for more thant a few minutes, temperture shoots up from 210 to 250 in the blink of an eye. It doesn't creep up it shoots up. More out of panic than anything else, I switched from AC to Heat and after a minute or two, the temperature drops suddenly back to 210. It doesn't slowly drop it drops suddenly.
I do not think the electric fan is working properly but do not know how to test it but could a fan make the sudden change in temp i am seeing?
My totally amateur diagnosid is thermostat and i'll replace it as it is realtively cheap and one of the few auto repair projects i a comforatble completing myself.
Has anyone heard of or experienced this before?
Any and all suggestions welcome.
Under normal operation, no problems at all. On a hot day, with the AC on, at a long traffic light or anytime I stop travelling at speed for more thant a few minutes, temperture shoots up from 210 to 250 in the blink of an eye. It doesn't creep up it shoots up. More out of panic than anything else, I switched from AC to Heat and after a minute or two, the temperature drops suddenly back to 210. It doesn't slowly drop it drops suddenly.
I do not think the electric fan is working properly but do not know how to test it but could a fan make the sudden change in temp i am seeing?
My totally amateur diagnosid is thermostat and i'll replace it as it is realtively cheap and one of the few auto repair projects i a comforatble completing myself.
Has anyone heard of or experienced this before?
Any and all suggestions welcome.
Replaced fan relay and electric aux fan began working properly. As a result, i am no longer overheating at idle or low speeds. Problem solved. I am also going to proceed with replacing the fan clutch with the HD model as it seems like a worthwhile upgrade.
Thanks again to everyone who took the time to help out this total newbie.
Slowly but surely I learning how to properly maintain this Jeep I love.
Moderator of Jeeps
Join Date: Jul 2011
Location: Frederick, MD from Cleveland, OH
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Year: 1993 YJ Wrangler
Engine: 4.0 I6
::CF Moderator::
Join Date: Aug 2011
Location: Prescott, Az
Posts: 43,971
Received 1,559 Likes
on
1,263 Posts
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Thanks to SteveMongr, Cruiser54, NewKindofClown, RCGuyMike, Salad and any others I missed.
Replaced fan relay and electric aux fan began working properly. As a result, i am no longer overheating at idle or low speeds. Problem solved. I am also going to proceed with replacing the fan clutch with the HD model as it seems like a worthwhile upgrade.
Thanks again to everyone who took the time to help out this total newbie.
Slowly but surely I learning how to properly maintain this Jeep I love.
Replaced fan relay and electric aux fan began working properly. As a result, i am no longer overheating at idle or low speeds. Problem solved. I am also going to proceed with replacing the fan clutch with the HD model as it seems like a worthwhile upgrade.
Thanks again to everyone who took the time to help out this total newbie.
Slowly but surely I learning how to properly maintain this Jeep I love.
Seasoned Member
Join Date: Dec 2013
Location: SATX
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Year: 1999
Model: Cherokee
Engine: 4.0 I6
These guys are great. Cruisers site with FSM's is extremely helpful.
Speaking of that, where would I find info on a TPS in the manual?
CF Veteran
Join Date: Jul 2013
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Year: 2000
Model: Cherokee (XJ)
Engine: 4.0
Getting some very minimals wobble when im driving, doesnt matter the speed. The issue is when I start to brake the wobble gets worse the more i brake until a point and then it just stops when i start to brake harder. Was thinking it was my rotors since I really feel it only while braking. Any ideas?
Thanks in advance
Thanks in advance
::CF Moderator::
Join Date: Aug 2011
Location: Prescott, Az
Posts: 43,971
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Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
No, I don't lick fish.
I swapped the steering from my ZJ to the XJ(since it was all brand new, and it's parked), the drag link collar is bottomed out to get the steering wheel straight. What's the best way to figure out what part of the steering system is un-aligned? The drag links are the same part from ZJ to Xj right? Can the steering wheel even be off? I replaced the clock spring and it looked pretty much impossible to screw up the alignment there. Does that mean someone had the pitman arm off at one point?
If your XJ is lifted, are you still running a stock tracbar in the stock location?
Last edited by Basslicks; 05-27-2016 at 08:50 PM.
CF Veteran
Join Date: Feb 2015
Location: North Carolina
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Year: 1993
Model: Cherokee
Engine: 4.0
Well. The transmission decided it wanted to overheat and boil again today. Anybody know what could be causing this. I went wheelin and right as we finished it started to slip real bad. Of course, acts just fine after it cools down. Not sure what's causing this, also got a fairly large B&M tran. Cooler installed but yet it still overheats. Any ideas?
Moderator of Jeeps
Join Date: Jul 2011
Location: Frederick, MD from Cleveland, OH
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Received 3 Likes
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Year: 1993 YJ Wrangler
Engine: 4.0 I6
Well. The transmission decided it wanted to overheat and boil again today. Anybody know what could be causing this. I went wheelin and right as we finished it started to slip real bad. Of course, acts just fine after it cools down. Not sure what's causing this, also got a fairly large B&M tran. Cooler installed but yet it still overheats. Any ideas?
CF Veteran
Join Date: Feb 2015
Location: North Carolina
Posts: 1,528
Likes: 0
Received 2 Likes
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Year: 1993
Model: Cherokee
Engine: 4.0
::CF Moderator::
Join Date: Aug 2011
Location: Prescott, Az
Posts: 43,971
Received 1,559 Likes
on
1,263 Posts
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Not sure about pitman arm length, but it has about 5/8" more drop than in XJ IIRC.