Why when i turn on the hot air to defrost the windshield the air does not come out from that vent but it keeps coming out from other vents , the heat works but does not defrost the windshield please send answer to haideecalderon@hotmail..com
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1993 Nissan Altima Question: Hot air does not come out
Answer #1DaveJHM December 17, 2010, 22:45Master
This is caused by a vacuum leak in a detached or damaged vacuum hose under the dash or hood.
Answer #2Visitor, February 09, 2011, 22:04
When you select to blow air on the windshield by selecting the specific windshield vent, it will blow cold air automatically, unless the A/C is turned off!
This is because, during cold/rainy weather conditions, the cold (dry A/C cooled) air dries the windshield more effectively than by blowing hot air.