When I turn the A/C on, it blows ambient air (no cooling of any kind). So, I hooked up the gauges to the lines and got extremely high pressure on the low side and normal pressure on the high side. Then, I visually examined the compressor and its clutch. The clutch spins regardless of whether the A/C is on or off. In other words, when the car is running, the A/C clutch is also running (constantly). It appears that it has been doing so for many months. After depressing the schrader valve, little to no refrigerant escaped. I evacuated the lines multiple times, and it did not hold pressure. After each evacuation, excess oil came out along with the air and moisture , and the pressure would not hold after 30 to 45 minutes. I suspected that there was a blockage in the low side somewhere (perhaps passed the TXV on the way back to the compressor). I now suspect damaged compressor/clutch assembly and maybe the condenser as well. I got these parts ready to be replaced. The heater works, and I am able to switch to the A/C side (where the heat stops but no cooling occurs) telling me that the actuator and blend door are working (right?). I am wondering if the TXV or Evaporator have anything to do with these symptoms? How about the pressure switches?
May 1, 2020 at 10:24 PM
