HVAC Pros Take Note High Pressure vs. Low Pressure Port Differences

The hard-to-access port down near the belt off a canister attached to the A/C compressor is the low pressure port. WITH the compressor clutch engaged, you should be reading approximately 215psi high side and 35-45psi low side. Jul 6, 2003. #4 · P ... Where is the low pressure and high pressure lines for the a/c located on a 92 honda accord lx with a 2.2 engine? Preview image for a collapsed post. ... From the FSM: ... On the 1.4L engine, the high side service port is located on the A/C suction line in back ... The picture in the post above would be my high side port. The recharge hose will only fit the low side. So you might be messing with the high ... Typical pressures when running are 30-40 on the low and 200-250 on the high side. These pressures will change based on ambient temperature and ... 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 ... 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 ... Well the low pressure is in front of the manifold and the high is on the passenger side of the bay, plus the port sizes are different, so it's ... The low-side service port is a quick-connect fitting that provides access to the low-pressure side of the A/C system.