Pontiac heater blowing cold air.
Okay so just yesterday morning i noticed my heater which
is on the highest temp in the mornings didnt blow any hot
air. Speed fan was fine. But when i noticed i started to
move the nobs ti cold then to heat. Eventually it started
blowing hot air. Then went back to cold then hot.
Watching my car temp once it started to blow cold my
temp for the car it self would begin to rise. A friend
suggested an actuator. I have to look into it seeing how im
not really machanically inclined. Any advice on what i can
do prior to getting bent over by a mechanic would be
Check the coolant level, may be low on coolant. Do this when the engine is cooled down.
After coolant lever check ,, adjust driver and passenger controls separately. If a bad actuator then only 1 side will be effected. odds are it;s the position sw (aims air at your face/feet/defrost etc). that switch is a combination vacuum/electrical sw. and the "O" rings either get worn or dry out (hot summer Sun over decades) .. That sw routes vacuum to the actuators ,,,
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