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iowa_hawkeyes2005
Guest
My van has been overheating. I added coolant and water. The mixture is fine. I have tested it. The heat also is not getting warm all the time. It will be cold, the temp gauge will go up past 3/4. I'm assuming the thermostat will open, the temp goes down to about 1/2 and then the heat will get warm for only a few minutes. The temp goes up again pretty quickly, the heat goes cold. I have noticed there is alot of browning grainy residue in the radiator. Could this be bad? Could the thermostat be not working properly? If i do need to change the thermostat, how in the world do you get to it? Any help is appreciated!