Understanding A/C Pressure High vs Low Pressure Port Analysis

The high pressure port on the hard lines is smaller than the low pressure port on the drier. I have an R134 gauge set, which seems to fit the low pressure port ... The low side port, or the low-pressure service port, is important because it's the point where you connect to recharge the AC refrigerant. Its location varies ... If you have the proper amount of refrigerant in the system, you shouldn't need a high pressure switch. If the compressor stays running and the ... LOW, LOW, Add Refrigerant. ; LOW, HIGH, Need service, possible blockage of the expansion valve or orifice tube. ; HIGH, LOW, Needs service, possibly faulty ... Low pressure lines are the fatter ones, high side are the smaller lines. Don't have your year so I've no exact info. Which also requires bumper cover removal. My low pressure side read 40ish psi on a 70 degree day with Compressor running and air blowing ... Any low pressure below 20 psi will begin to freeze the evaporator core and basically reduce the cooling ability. The low pressure switches are ... The high side of the system is the smaller of the two. And on a 134a system the low side port is the bigger of the two. Hope this helps. A. Normal AC Pressures Using R-134A · At a temperature of around 65°F (24°C), the low-side pressure typically ranges from 25 to 35 psi. At an ... 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 ...