The A/C is not working in my 2002 S-10. Currently the compressor runs, but the air is not getting cool. I tried adding freon, but it has not helped.
The low side pressure is about 50 psi, and would drop a few pounds when the compressor is started, but it drops no further. I have not noticed the compressor cycling while it is on. The can of refrigerant is not empty, but the system does not seem to be taking any more from that can.
Do I just need to add some more coolant from a fresh can, or is something else at work here.
Also, probably unrelated, when down shifting it is fairly common for the air to switch from blowing up front to blowing on the defrost.
Any help would be appreciated.