What about a vacuum leak? I had that prob where the a/c hose was coming off or something and cold air wouldn't blow, and the only air that would blow was out the defrost vents. Might want to check that just in case.
-Rob
White 95 GL ATX
56K Miles on it.
Optilux By Hella Fog lights (The Angel Eyes)
Driven hard, Just like I like it!