If the engine overheats right away, that could be a sign of the thermostat stuck closed. It could be other things too, but that's what happens if it's stuck closed.
If it never seems to warm up to operating temperature, that's a sign it could be stuck open. The coolant will get warm, but not hot, and you won't have any real heat out of the heater/defroster.
2007-04-26 01:21:53
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answer #1
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answered by LW 3
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Start engine while still cold remove radiator cap watch water in the fill hole and when the thermostat opens up you will see the water flowing through the radiator and check the temp it should be approx in the middle.~~
2007-04-26 08:25:33
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answer #2
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answered by burning brightly 7
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1) engine temperature indicator is lower or higher than "normal" for your car
2) heater won't give heat
3) radiator "boils over" when not an extremely hot da
"too hot" can be cause by other things, like blocking air to radiator. too cold must be the thermostat.
2007-04-26 08:21:11
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answer #3
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answered by G_U_C 4
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When car is cool take radiator cap off start car if water is moving it's stuck open replace it. If car reaches normal on temperature gage and water is not moving replace it it is stuck closed.
2007-04-26 08:23:11
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answer #4
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answered by James B 5
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good answers from James and burning above but my friend you put this question in the wrong place...it should be under "maintenance and repairs" God bless you and good luck !!! /
2007-04-26 10:41:50
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answer #5
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answered by Anonymous
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