How do you check your thermostat, while running hot, I checked both hoses, they both felt full and hot. Should the top hose feel empty or full of coolant. My car was running hot before, put a clutch fan to replace the flex, and it worked, car ran completly cool even while idling for a long time, but just the other day, It was real hot2 about mid 90s and it started to run about 210, when i started driving it only went down a little. Then drove it again next day (wasn't so hot) and it was real cool again.
I figured out a different way, checked upper hose while cold and running felt empty because thermstat wasn't open, felt it when hot, hose felt full because therm. was now open all the way, I guess my stat was working when it was running hot. I have a 16 inch summit elec. fan, it stopped working a little while ago, gonna try to get it fixed, so i can put it on the front of the radiator with toggle switch for those hot days. anyone in the bay area know a place that can fix an electric motor on a fan?
Actually, boiling point of water is 212F. I had overheating problems with my 67 and fould an optical pyrometer to be a very valuable tool. It allows you to just 'point and shoot' to get the temperature of anything.
Good Luck -- E-mail me amd I can give you specifics of my temperature readers.
xodus, I think he was saying to put the thermostat into a pot of water with a thermometer and bring the pot to a boil to see when the thermostat opens! Obviously, if it hasn't opened by the time the water starts to boil it's not going to open (at least not below 212).
The temp at which water boils is affected by atmospheric pressure.
At the summit of a 14000 ft. mountain, it would boil at a much lower temp than at sea level.
This is the reason radiators have caps that control pressure.
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