I've got a 94 JGC Limited 5.2 that has just started overheating last couple of days. I replaced the thermostat bout a week ago because I thought it had been sticking. It seems to want to run between 230-235 down the freeway with the a/c running and overheats in traffic. It has been over 100 degrees outside but still I know it shouldn't be running thus hot. By the way I'm not losing any fluid so I ruled out leaks or blown head gaskets.
The fan seems to have plenty of resistance when I check it, but I only have when it's cold. As far as the radiator cap, I havnt noticed any leaks. It's gotten worse last couple of days as far as running hotter.
My ZJ in the Houston drought heat isn't faring very well...after a few minutes it goes to 190 and slowly climbs past 210 the longer I drive...though its not very hard driving. My cooling system is working fine, the intense heat and highway traffic was probably just too much for the system.
[CENTER][URL="http://www.jeepforum.com/forum/f197/breckenridge-redemption-build-thread-3111777/#post29271881"]Build Thread: "The Jeep" 1995 ZJ Laredo I6 212k. 20 years 1 family.[/URL]
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We had the same problem with our 1993 for over a year. Just sitting at a drive through window for a few minutes would cause us to overheat and the AC would blow hot air. We just had the transmission rebuilt (this week) and they also replaced a seeping heater hose, the thermostat (and gasket) and flushed the cooling system and it seems to have resolved the issue (knock on wood)