94' 4.0. I was having some temp issues, the jeep had a new radiator to start, i replaced the coolant sensor(s), and thermostat, then i could hear the water pump making noise, so i replaced the pump, it is still running above 230, we flushed the system, and pressure tested it. There are no other signs of possible issues, checked the oil, clean, no sign of coolant thinking possible cracked/warped head/waterjacket, but no internal/external leaks!!!!! WTH?????

 

Only other major part is the fan clutch. R u positive the rad is full?.....checked coolant level in rad MOTOR COLD. Verified gauge is accurate?

 

Check the auxillary fan, it should kivk on around 210. Also check your coolant hoses, they can get gummed up and restrict coolant flow.

 

forgot to mention, new hoses. System was full of coolant, however, not too sure about the fan clutch thou!

 

x2 on fan clutch

 

how do you tell if its bad??

 

Mine was running hot alittle bit but it was just a slight air lock
Mine runs at about 212

 

If u don't know how old it is, presume it's bad/weak. Fan clutch performance degrades slowly with time/miles.

Look at the bright side, new fan clutch doesn't require coolant drain/refill. LOL

 

10-4 that!