Quote:
Originally Posted by h8z2luze
I did the same thing then I realized even when the fan is all the way off the temp is still the same of the air comming through the vents so before you turn your fan off turn the temp down and it should be cooler.
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Hes very right, Your heater pulls fresh air from outside, so when you drive fast, the air is forced through everything, then through the heater core and out comes hot air, just like LUZE said, turn the temp down before you turn off the fan, it will close the heater control valve and not let hot coolant into the heater core. that should fix your problem!!!