Engine Size: 4.3L
Refrigerant Type: R134
I just bought a '92 Chevy for my son and its AC was blowing relatively warm at idle, but cold while moving. I took it to my mechanic and was told that the the orfice was stopped up and that it was time to replace the compressor. I did and in the process they switched it over to R134. $800 later, it's not any better. My question is just how cold should it blow at idle on these old trucks? I get that the truck is 23 years old, but if that were the explanation I would've obviously avoided replacing the system. Thoughts? I've got no info for you on temps and pressures. Thanks for the help.
It would help to know what the pressures are when it is not cooling. If you have an overcharged or High pressure issue. It will be hard for the system to cool. Spray some water on the condenser and see if temps drop.
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