Reasons for ac compressor issues in volvos posted on: After washing my engine my air conditioner quit working. Auto Air Conditioner And Repair Components Of The Air Conditioning Troubleshooting Pressure Switches Air Conditioning System Air Conditioning Air Conditioner The blower motor blows air. Air conditioner stopped working after car wash . While there are a variety of reasons your car's air conditioning might not be operating at top performance, the most common are a refrigerant leak, an electrical climate control issue, or a problem with the air conditioning compressor. If your car is blowing hot air because the refrigerant has already leaked out over the winter, you can easily recharge the system using a/c pro. The ac button has a light on the button that illuminates when the air conditioner is turned on. In the sweltering heat of summer, air conditioning is an absolute must, especially on road trips or long commutes. Power outages or surges, while rare in the pa...