Try blowing the radiator fins out (from the inside) with compressed air--bugs and other debris can clog the air flow. Do the radiator fan(s) run when hot? If not, check for blown fuse, seized fan motor(s), bad relay, or bad engine thermal sensor. Is it losing coolant water from somewhere?
Was reviewing this item. From your later description of extremely hot water coming OUT of the engine, I would suspect a combustion chamber leak into the cooling system (a blown head gasket or warped head). The way to check for this (cold engine) is to remove the drive belt to the water pump, remove the radiator cap, and start the engine. If leakage is occurring, there will be bubbles coming up into the radiator. It should do this when fairly cold, so don't run the test any longer than necessary. If you get bubbles, plan on engine work--remove the heads, check for flatness (and surfacing of heads if necessary) of mating surfaces and replacement of head gaskets.
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Did you get a radiator flush
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thank you for your help, but its not the radiator, fan works. two radiator hoses coming in/out to engine. the hose to the water pump in cool when running. the one coming from the engine to the radiator is extremely hot causing the over flow tank to boil out..
what is engine thermal sensor? and how can it cause it to over heat?
what is engine thermal sensor? and how can it cause it to over heat?
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