i have a 2003 taurus, the gauge stays cold most of the time then at times when at ideal it goes to half way up where it belongs and heat gets hot, then goes back to luke warm heat and gauge back to co
heat problem luke warm and sometimes hot, gauge stays on cool then at idle
sometimes goes to half way where it belongs and heat works, but most of
time stays luke warm, coolent is full?
Sounds like the thermostat needs to be changed. This controls the engine temperature that heats up the heater core, so you get heat inside the car.
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