My car is a 2002 Mercury Sable GS, The past year every time I turn my heat on all that blows out is cold air. I have had a coolant flush, change the thermostat and the heating core and yet all it does is still blow out cold air when I turn the heat on. Why?
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2002 Mercury Sable
Question: Heat on Cold air out
Visitor, September 22, 2010, 21:35
I think you have a problem with your blend door.
A blend door swicthes or (flip) from side to side in your ac and heating system.
Distributing either hot or cold air. Sometime it's the blend door or the vaccum that
operate it.(under dashborad)
Replynxkeller, December 10, 2010, 03:57Rookie
My 2000 does the same thing. Where do I look to check the condition of the vacume lines; under hood? under dash? If under dash what location specifically.
Answer #2Visitor, February 02, 2011, 20:08
clean out heat pump and change coolant