stuck on defrost
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Junior Member

Joined: Feb 2007
Posts: 55
Likes: 0
From: demopolis, Alabama
Car: 88 formula
Engine: 350 tpi
Transmission: 700
Axle/Gears: 3:23
stuck on defrost
my a/c is stuck on defrost and not putting out very much air at all, my question is has anyone had this problem? I know that there is a flipper in there soemwhere that switches it over, I'd just like a head up on whre it is and what else could be the problem, thanks.
Supreme Member
Joined: Apr 2002
Posts: 3,552
Likes: 5
From: New Jersey
Car: 86 Corvette, 89 IROC, 1999 TA
Engine: 350, 350, LS1
Transmission: 700r4, 700r4, T-56
Axle/Gears: 3.07, 373, 4.10
Re: stuck on defrost
defrost is the default, most likely you have a vaccum leak. Check the supply line in the engine compartment and make sure its connected, check to make sure the vaccum connector on the back of the control head hasn't come loose.. I knocked mine off before when I swapped out the radio..
Joined: Aug 1999
Posts: 19,282
Likes: 103
From: Lawrence, KS
Car: Met. Silver 85 IROC/Sold
Engine: 350 HO Deluxe (350ci/330hp)
Transmission: T-5 (Non-WC)
Axle/Gears: Limited Slip 3.23's
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