when i turn on the a c in the car it blows cool air out of the defrost vents but not the front a c vents and we can't figure out why
Jun 27, 2010 at 8:41 PM
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BMRFIXIT
✓ASE Certified Mechanic
19,053 POSTS
Doors operate by vacuum and when vacuum lose it default 90% to defrost
check for vacuum leak
start under hood and into the firewall
Jun 28, 2010 at 9:20 PM
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