Demystifying A/C Pressure High vs Low Pressure Ports Unveiled

I have a 2014 Dodge Charger SXT with the 3.6L engine and 8 speed tranny. It's about 5 months old to me and now that summer heat is here ... 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. if u have 100 psi lo, 100 psi high USUALLY means compressor clutch is not engaging. what i always do before jumping to conclusions is charge the ... you have two sizes of ac line one large one small the smaller line is the high side the pressure switch for the low side used to be at the ... The typical low pressure side PSI is between 20 and 50, so 70 is on the high side...although not likely dangerously high. If you're not getting ... 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. 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 ... 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 narrower tube is the high-pressure line and the wider one is the low pressure line. Follow the wider tubing from the compressor until you ... 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.