Overheating problems - JeepForum.com
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post #1 of 52 Old 03-05-2012, 11:45 AM Thread Starter
scubamark13
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Overheating problems

I need your help, I recently bought a 92 XJ Limited that has 97k on it. I have noticed that the engine temperature gets close if not into the red range when I am on the freeway and on a steep grade for a long period of time. Then engine temp is normal when driving around town or on flat ground. I have replaced everything under the hood that I can think of and it is still overheating. Can anyone think of anything else that could be wrong with it. I can't afford much more but I need a running vehicle. I am really hoping it isn't the head. Here is what I have installed so far.
3 row radiator from radiator barn
Hesco hi flow water pump
Hesco hi flow thermostat housing
Mr Gasket 195 tstat
upper and lower hoses
heater control valve
heater hoses
fan clutch
serpentine belt

Thanks for your help,
Mark

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post #2 of 52 Old 03-05-2012, 12:07 PM
z06elmo
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have you pressure tested your cooling system?
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post #3 of 52 Old 03-05-2012, 12:10 PM Thread Starter
scubamark13
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No I have not but it isn't leaking. There isn't any coolant in the oil or oil in the coolant and the coolant is green with no strange colors to it.
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post #4 of 52 Old 03-05-2012, 03:02 PM
djb383
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R u running big tires? Nothing blocking air flow to the grill?
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post #5 of 52 Old 03-05-2012, 03:09 PM Thread Starter
scubamark13
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I am running 32s and I removed the winch first thing. The only thing left up there is the fairlead.
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post #6 of 52 Old 03-05-2012, 03:22 PM
djb383
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I would think 32s, steep up-hill grade and hi-way speeds must raise the temp some but not into the red with all the new cooling system stuff. Any way to verify your temp gauge? Might try removing the fairlead as well.
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post #7 of 52 Old 03-05-2012, 03:27 PM
xxmikewalshxx
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My was doing the exact same thing. I was just about to do the radiator when I decided to try a can of engine degreaser on the radiator as it was filthy, it fixed it. No that does not help you. I tried everything, new thermo, new rad cap, several backflushs, a bottle of Kseal in case it was a head gasket, bled every ounce of air.... Is your tranny cooler up front? After much frustration I had taken it to my local garage, he said radiator or tranny cooler.... Good luck, I know it sucks, it is my only transportation.

All Stock save for one track arm bushing, one Plenumn gasket, one Thremostat, one Magnaflow Muff, some vacum crap and roof accessories. Just added, loads of burn marks, melted plastic, tires, paint, smoke tinted glass.......
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post #8 of 52 Old 03-05-2012, 03:45 PM
SuperDave14
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Working down the list on mine right now. Water pump is next
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post #9 of 52 Old 03-05-2012, 04:02 PM
djb383
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If u do water pump, t-stat, radiator and hoses at the same time, u only have to drain/re-fill coolant once.
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post #10 of 52 Old 03-05-2012, 05:06 PM Thread Starter
scubamark13
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Yah I have no idea what else to do. Someone mentioned it may be the head but couldn't give me a reason why or how to check it. I would really hate to put another grand into it if it isn't going to fix the problem.

Any other ideas would be appreciated,

Mark
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post #11 of 52 Old 03-05-2012, 05:24 PM
tjwalker
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Quote:
Originally Posted by SuperDave14 View Post
Working down the list on mine right now. Water pump is next
Confused. In your original post, it says you already replaced the water pump.

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Past Jeeps: 49 Willys, 81 Scrambler, 88 Comanche
Without "data", all you have is an opinion!
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post #12 of 52 Old 03-05-2012, 06:28 PM
SuperDave14
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Quote:
Originally Posted by tjwalker View Post
Confused. In your original post, it says you already replaced the water pump.
Nope not me....but it was the water pump. I have never seen anything like it. The impeller looks like a blade in a blender
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post #13 of 52 Old 03-05-2012, 06:46 PM
xxmikewalshxx
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The guys at the garage recomended the K seal, you could see the copper flecks in it. I'm not a big junk in the trunk guy but the thought was if the head gasket had a small leak, the stuff was supposed to seal it. It's expensive, so they said but they gave it to me. It did not hurt anything, worth a try before you pull the head(s)

All Stock save for one track arm bushing, one Plenumn gasket, one Thremostat, one Magnaflow Muff, some vacum crap and roof accessories. Just added, loads of burn marks, melted plastic, tires, paint, smoke tinted glass.......
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post #14 of 52 Old 03-06-2012, 07:20 AM Thread Starter
scubamark13
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I will try almost anything before I pull the head. I will stop at Napa on the way home and pick up some K seal. Thanks for the tip. Any other ideas are welcome.
Thanks
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post #15 of 52 Old 03-06-2012, 07:59 AM
jeepster383
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Quote:
Originally Posted by scubamark13
I will try almost anything before I pull the head. I will stop at Napa on the way home and pick up some K seal. Thanks for the tip. Any other ideas are welcome.
Thanks
I would take it to a shop and have them do a block test to check for a blown head gasket or cracked head before you put junk in the cooling system
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