A/C Troubleshooting High Pressure Port vs Low Pressure Port Dilemma Solved

Any shop that does AC work can easily replace them and recharge the system for you. I'd have it evacuated, replace the valve, and then have the ... 3 Symptoms Of A Bad AC Pressure Switch [HIGH OR LOW]. Mechanic Base ... GM Air Conditioning Pressure Switch Problem and Replacement!! 80-100 psi with the engine off is OK. The system just settles out and the pressure equalizes. When you start the engine and when the compressor turns on the 15 ... Learn the 4 main conditions that will cause your vehicle's A/C pressure to have low side pressure that is high and high side pressure that ... ... low pressure port with the A/C on ... I'm supposing that the compressor has to be engaged or the gauge will show high pressure. Read the full gpd Tech Tip #29 in English, Spanish, or French at gpdtechtips.com In an automotive A/C system, the compressor is driven by a ... I can't help you on which is the high or low side. Your a/c system ... My question is ...from the firewall is the low pressure port on the driver ... The reading of 20 psi on the low side and 210 psi on the high side would indicate a restriction somewhere in your ac system. Both the low and high side ports are on the compressor itself rather than on the suction and pressure hoses as is more typical of modern cars. I put the gauges on the a/c test ports and i'm reading 0 psi on the low pressure side and between 100 psi and 125 psi on the high pressure side ...