It is possible that it is air locked. Try squeezing the upper and lower hoses to release any air and make sure the radiator is full, sometimes jacking up the front helps. It could also be a bad thermostat so replace that if you have not done so already.
most likely the timing is off, this affects fuel economy and other things.
Engine Coolant is probably coming out of a small hole on the bottom of your water pump. This usually means your seals are gone in the pump and that the pump should be replaced. This happened to my '93 Jeep Grand Cherokee on I-40 near Knoxville about 3 years ago. NEW ADDITION: I am having the same problem with my 94 grand Cherokee today, we replaced the water pump and the problem still persists, there may be a hole in the radiator like mine.. just replace the radiator.. that's what im doing
Low coolant, failed thermostat, inoperative radiator fan, failed waterpump, failed head/headgasket, etc.Low coolant, failed thermostat, inoperative radiator fan, failed waterpump, failed head/headgasket, etc.
I believe the 1990 year still had the sealed system. So there is no rad cap. You can add fluid by pourig it into the overflow bottle with the vehicle running the coolant will be sucked into the system. No radiator cap exist in the 90, 91 model. You add the coolant to the coolant container (The coolant container cap is the equivalent of the radiator cap, (pressure device))and the palstic container is under pressure all the time. Be carefull when you want to open it after the car has been running. After those year models, Jeep discontinued the use of the pressure container and went back to tha radiator cap and remove the pressure coolant container.
It could be a head gasket or cracked head. With the engine cold, take the radiator cap off and crank the engine. If the head gasket is bad coolant should shoot out of the radiator. 12 inches to possibly hitting the hood.
Check coolant in Radiator!!! Radiator might be empty, fill it, it's probably the reason why your engine is overheated
Defective radiator cap?Fan temperature sensor defective?
Low coolant? Stuck Thermostat Cooling fan not working Water pump not working Clogged radiator System airlocked Defective radiator cap
Assuming that the radiator and hoses are not leaking and coolant at proper level. Radiator cap worn and not maintaining coolant system pressure causing the boiling point to rapidly drop, or failing water pump. Possibly very old oil causing issue, or oil pump intermittently not working.
You need to check coolant temperature sensor and the water pump.
your radiator needs to be replaced
Turn it off. Let it cool off and then see if it has a coolant leak or radiator leak. Don't open the radiator when hot because the hot water will spray out.
Radiator caps are pressure relief valves. They are rated at "pounds per square inch" and are designed to release some pressure from the radiator if it gets too high. If an engine overheats it can boil the coolant and this will cause the radiator cap to let out steam. Radiator caps DO lose their ability to regulate pressure and can release too soon. If the engine has not overheated, have the radiator cap tested and replaced as necessary.
When the cooling system is overheated, the coolant is at pressure. Removing the radiator cap will release the pressure, and allow the coolant to boil, probably splashing you with boiling-hot radiator fluid. Your arms and hands will certainly be burned, and there's a good chance that the boiling coolant will splash your face. You wouldn't like it if that happens.
When the cooling system is overheated, the coolant is at pressure. Removing the radiator cap will release the pressure, and allow the coolant to boil, probably splashing you with boiling-hot radiator fluid. Your arms and hands will certainly be burned, and there's a good chance that the boiling coolant will splash your face. You wouldn't like it if that happens.
Thermostat fail to open. Waterpump is on the deathbed. None, or not enough Anti-freeze in radiator.
If you can't see where its coming from, it may be a cracked head, or a bas headgasket. Also, when you add water to the coolant tank, it doesn't immediately go into the radiator. After the car sits a while, the radiator starts to cool, creating a vacuum. Water/coolant is then pulled into the radiator from the coolant tank.