Replaced water pump, heads, new thermostat, fans are hooked up directly. New anti-freezer and bleed the air. and the car still over heats, radiator looks good, not leaking but i'm thinking that's our last thing. Do you guys know what else it could be? any help will be appreciated.
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Air lock find out where the bleed nipple is and undo carefully if engine hot and wait for the water to stop spitting and hissing ( like a kettle) Top up with water/antifreeze careful to pour slowly to avoid air bubbles accumulating.
Clarify your question. If it is overheating with the new radiator, how badly?. bubbles in the overflow tank?
Jack up front and take cap off and burp radiator overnight.
One suspects air bubbles, or the wrong water thermostat not opening for whatever reason.ensure water thermostat has a hole drilled through it
If its the electronic 'fan' thermostat, you are addressing the symptom not the problem. If the car has 300kms/150K miles, could be a head gasket leak - exhaust to water. Check radiator fluid for traces of exhaust gas.
check that you put the thermostat in the right way. The body of the unit has to be in the head / block water. Simple check is to start from cold and within 5-10 minutes idling you should start to feel hot water coming through the top radiator hose.. If in ok the bleed the air out of the cooling system by loosing off the highest hose and let the air out until you get solid water flow . Run the engine while doing this so that the water is circulated by the pump. Make sure that the heater core is open to allow the air in it to be removed
replace thermostat did bleed coolant system check coolant level.because if not engine could have overheated and blowed headgaskets warp or cracked the heads check engine compression.sound like engine got too hot.
Be sure the radiator fan is coming on first. Let the car warm up pop the hood and observe the fan it should come on within a ten minute period. If the fan doesn't come on the problem is either a fan temperature switch or a fan relay is bad. If the fan works ok replace the thermostat, also be sure the coolant is at a 50 / 50 mixture of water and antifreeze.
Sometime a car will overheat it there is air int he system. You can buy a resivor that will screw tot he top of your radiator that is made for burping the system. This can be found at your local auto parts store.
I had the same problem with my 1993 Liberty LX. Remove the thermostat (located inside bottom radiator hose engine connection - take the connection off and thermostat is inside). Reassemble (minus thermostat), reconnect bottom hose. Slowly (very, very slowly) refill the radiator and remove the bleed plug ( located beside the top hose connection to the radiator - a black square plug with a phillips head cross in the middle). When the radiator is full and clear water (no air bubbles) is coming out of the bleed point, replace the bleed plug and then the radiator cap.
Run the engine for five minutes (approx) or until normal engine temperature is reached. Allow the engine to cool down and recheck the water level - fill if necessary ensuring that the bleed plug is open and clear water is coming out of that point. Replace Bleed plug and then radiator cap. Run engine for five minutes (approx) and then test dive. If the engine overheats keep filling the radiator until there are no air bubbles coming from out of the bleed point.
This fixed my overheating problem. Good luck and safe motoring.