A/C Troubleshooting Simplified High vs Low Pressure Port Diagnostics

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 ... Locate the Low-Side Service Port ... This port is typically found on the line connecting the accumulator and compressor. The high side fitting is located between ... What were the pressure readings on the High and low side when you were charging the system? is your condenser clean and you can see thru it? The extremely high pressure on the high side and normal pressure on the suction side indicates that the evaporator is overheating. The pressure reading from the low side should be between 25 and 30 psi and the high side between 200 and 250 psi. But if you see the AC low side high, high side ... The smaller fitting is the high pressure side. The larger fitting is low pressure side and is for charging. 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 ... Typically the low pressure port is located close to the AC accumulator and not the compressor although it is possible as this is a conversion. Thus, if the gauge is reading high, then it indicates a problem with your compressor in that the low side isn't going low. When the A/C is fully ... Due to factors beyond the control of RB The Mechanic, it cannot guarantee against unauthorized modifications of this information.