Unlocking the Power of A/C Pressure Ports High vs Low Revealed

The AC low pressure service port is directly behind the engine, about 5-6 inches back, in the center. Look for the two silver pipes coming out ... Typically, when the pressures are equal, and the compressor is engaged, then the compressor is bad. That said, those compressors don't usually fail internally ... 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 ... 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? ... LP & HP are Too High 3:34 Learn how to spot the issues in any AC climate system using r134A, just by reading the pressures of the system. #### High pressure you would turn the r134a can upside down to charge and right side up in the low side. I planned to go look pressure side, but then ... Asking because we at the shop charge through the high side port, but it takes way longer and sometimes the machine can't even pump it well ... -Do not allow the low-pressure gauge to exceed 3 bar, otherwise liquid refrigerant can get onto the suction side of the compressor and destroy ... For most vehicles, the low pressure side fill port is located on the left side of the engine bay. It will often be a small section of metal pipe that has two ... 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 ...