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Re: Heater and Vent Work, But not Defrost?
Quote:
Originally Posted by LBJ
Well, there is an electrical switch position for Defrost. (snip) I have to wonder about that switch and if it is somehow faulty.
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That switch is to override the temperature controls for the air conditioning and turn the compressor on to help dehumidify the air going to the defroster.
All GM products since the early 70's have done this and still do today. It's why if you have A/C, you shouldn't drive with the selector in the defroster position as you're cycling the A/C and wasting gas (unless you're currently USING the defrost, which means you shouldn't be driving anyways due to limited vision (had a cop inform me of this  )).
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Darrin
1955 Willys CJ-5 all original and the oldest CJ-5 on the road.
2001 Dodge Neon (wife's car)
1995 Jeep Grand Cherokee Limited Edition SOLD
1981 K15 Custom Deluxe 4X4, rusty but trusty wood hauler. SOLD
1993 S-10 4X4 Tahoe SOLD
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Last edited by Mickey_D; 01-07-2008 at 04:36 PM.
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