With engine cool - remove radiator cap Run engine to normal operating temperature and try to observe coolant flow inside radiator - should be little to no flow until thermostat opens and then full circulation should be observed.
check to see if the electric fan is working and cutting in at the correct temp. other thing to check is your temp gauge working correctly? check coolant temp with the OBD diagnostic tool and see if this is saying that the coolant is overheating. check to see if the electric fan is working and cutting in at the correct temp. other thing to check is your temp gauge working correctly? check coolant temp with the OBD diagnostic tool and see if this is saying that the coolant is overheating.
easiest way to tell if water pump is working is to run engine until at running temp. then carefully remove radiator cap. with someone slightly reving engine, look into radiator. if the pump and thermostat are working correctly, you will see the coolant moving(circulating) in the radiator
Bring it in to your local auto parts store and they will test it for you for $0.
Not hard. Take the radiator cap off and crank it up and let it run until it gets to operating temp. You should be able to see the coolant moving inside the radiator. if it is, it's working.
three things can cause that promblem first is the thermostat not working second can be the radiator it self check to see if the heat consit through the radiator do this with a thermo read and not your hands or it could be the water pump is no longer working
Make sure coolant level is correct Check to see if cooling fan is working if so equipped Check radiator cap Radiator may be clogged Air flow through radiator may be restricted Water pump not working properly? Thernmostat not opening fully
If you have replaced the water pump then flush the radiator with CLR also check to see if the fan is working properly.
Check the radiator (and the resevoir) after it cools to see if radiator fluid has been filled to proper levelds. Also, check the radiator hoses. In addition, check the oil.
Alot of things. Check coolant levels. Check to see if you have any leaks. Check to see if radiator cooling fan(s) are working. Check oil level. Could be blown head gasket. Water pump could be going out. Cooling fan not working. Really need more info to help.
check to see if fan is working by powering it up with 12 volts. if it works it could be your radiator fan relay.
Check w/ mechanical gauge Replace Thermostat Check to see that radiator hoses are not collapsing at high RPM Check to see that air flow to radiator is not restricted Check to see if radiator is plugged and needs to be boiled out or replaced
Have you check to see if the radiator is clogged with dirt and debris try pressure washing the radiator and make sure the fan is working like it should. If you clean the fins and it still runs hot you might check to see if the temp guage is reading correct.