Hello, I have a stumper for you guys. The above mentioned car works perfect in every way. The heater even works fine blowing out strong HOT air.
( unless the headlights are on ) then it blows out pure cold air. Turn off the lights, and bam. Back to hot air again? Please help.
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Thursday, October 1st, 2009 AT 8:30 PM
1 Reply
MATHIASO
MECHANIC
1,209 POSTS
This is electrical it will require looking for a short to power between circuits and because there is not blown fuse.
Wirring diagram, looking into connetors. And testing with multimeter.
I believe the problem is not the heater.
You will be chasing a short in the circuit.