I acquired a 1989 Toyota Camry with just over 100K miles. The previous owner had a slow A/C refrigerant leak, but the A/C cooled well when recharged. Considering the age and low value of the car, he tried to use one of the leak sealers. The sealer didn't work of course. When I got the car, I injected die and found the leak on a hose coupling to the compressor, which I had a shop tighten, vacuum, and recharge. Now the system holds pressure, like 50 psi when equalized, but no cooling when running.
When the compressor is engaged, the high side goes way high, like 400+ psi I believe, and the low side goes down to near zero. So it looks like the compressor is working, but something is blocking the refrigerant. At first the shop assumed the expansion valve was clogged or stuck. So I had them replace it with a new expansion valve. Unfortunately, still the same symptoms.
So now my theory is that the leak sealer clogged the Dryer/Accumulator. Is that probable ?
My next step is to have the shop replace that. Does that sound like the right thing to do at this point ?
Any other things it could be ?
Any ideas or suggestions ?