AC Won't Charge - ZR-1 Net Registry Forums

365gtb4 · 03-08-2014

I have a 1990 that is giving us fits. When I bought the car the AC didn't work. There was no freon in the system so we pulled a vacuum and tried to get it to take r134. The car had r134 fittings. It would take only about half a can of freon even with the low pressure sensor shorted. The compressor was engaged and turning. I then decided to replace the compressor with a new Denso compressor. I did this and replaced the acumulator, hoses, evaporator, expansion orifice and filter. The only thing not replaced was the condenser. We then pulled a vacuum and again it would only take about half a can of r134.

Next I took the car to a reputable AC repair shop. They flushed the system and replaced the schrader valves. They had the car for a week and couldn't get it to take the freon. I brought the car home.

Today I disassembled the system and blew out all the parts but the compressor. I replaced the oil with 8 ounces of new oil and all new o-rings. I pulled a vacuum and checked for leaks. I then tried to add the freon, it took a little more than half a can and that's all it would take. The low pressure side gauge never read below 95psi.

Any ideas?

03-08-2014	#1
365gtb4 Join Date: Dec 2010 Location: Redlands, CA Posts: 9	AC Won't Charge I have a 1990 that is giving us fits. When I bought the car the AC didn't work. There was no freon in the system so we pulled a vacuum and tried to get it to take r134. The car had r134 fittings. It would take only about half a can of freon even with the low pressure sensor shorted. The compressor was engaged and turning. I then decided to replace the compressor with a new Denso compressor. I did this and replaced the acumulator, hoses, evaporator, expansion orifice and filter. The only thing not replaced was the condenser. We then pulled a vacuum and again it would only take about half a can of r134. Next I took the car to a reputable AC repair shop. They flushed the system and replaced the schrader valves. They had the car for a week and couldn't get it to take the freon. I brought the car home. Today I disassembled the system and blew out all the parts but the compressor. I replaced the oil with 8 ounces of new oil and all new o-rings. I pulled a vacuum and checked for leaks. I then tried to add the freon, it took a little more than half a can and that's all it would take. The low pressure side gauge never read below 95psi. Any ideas?