Hey, all! I've got a 92 firebird 3rd gen which has the GM r4 a/c compressor. I am beginning to suspect that my compressor might be starting to fail. When running it, the engine felt like it had drag on it with a little rough idle. I know the pulley and bearings are good since I replaced the pulley assembly (with bearingings) very recently. But the compressor still feels stiff. I thought compressors should be easy to spin by hand when the engine is off, but this one is stiff and takes quite a bit of force to get it to spin by hand. When it does I do not hear / feel any grinding from the compressor. Should I be able to easily spin by hand? Currently it takes 2 hands gripping tightly and about as much force as I can exert to spin it just a little bit at a time.
Thanks in advance!!!