Unveiling the Secrets of A/C Pressure High vs. Low 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 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 low pressure side is the return line between the cabin evap and the gas compressor upfront near the drive belt. 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 ... 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 ... Some older posts by p_gill indicate 35-40 psi on the low side and 150-155 psi on the high side, but no reference back to a spec. A/C pressure switches are installed in the high pressure side of the system, between the compressor and the receiver/drier. The objective is to ... Low (suction)side is the larger of the two lines, high side is smaller. Suction line should be cool or cold, high side is hot. So I found out my AC was BADLY leaking out of the high pressure port and the O-ring for the low pressure switch was in bad shape when I pulled ... 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 ...