Most likely you have a vacume leak under the dash.Check for lines off or broken.They will harden and crack with excessive heat,such as in the engine compartment.
wrong size fuse. wire from fuse to rear defrosted damaged and shorting to the body. wire at actual window shorting to body.
Replace the high speed relay.
1997 s10 4.3 Chevy blazer. what inlet does the freon go in. the one on the aluminum tank where the hose from the compressor goes into it?
My ac blows only in the defroster and not any of the other vents i have 98 ford windstar 3.8 v6
could be a vacuum line off
if its in the reservoir it should be in the radiator of it is then it has a blow head gasket or a crack head
thats because your blower went out
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Either you have clogged or busted vent pipe or the actuator could be going bad.
Check for vacuum leak either under hood or under dash Check for bad vacuum actuator under dash
I have exactly the same problem on my 2000 Still looking for the answer
Most likely the rear expansion tube or valve is defective.