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Why doesn't the heater get hot and the temperature gauge is on hot?

(1998 Toyota Tacoma)
in West Point, GA on November 02, 2013
I noticed that my heater was blowing cool air snd then the needle for the temperature went up to hot. When I turned off the heater the temperature went down some.
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Popular Answer
of G. T. Service Center on November 02, 2013
Does the engine actually get as hot as the gauge shows?
on November 02, 2013
The engine did not overheat but the needle was on hot.
of G. T. Service Center on November 02, 2013
Sounds like a grounding issue; Check and clean all your grounds before going further, and coolant level.
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