Unlocking Automotive AC Pressure Gold A Comprehensive Chart

According to your ambient temp and pressure readings you are probably slightly low on charge. ... Automotive for Marine · $7.39. I see charts that show, at 90 degrees, a low side of approx. 30 psi and high side of 225. Another chart will show 50 PSI and 260 PSI. Measure the ambient temperature and compare the reading with the pressure-temperature chart of R134a below: In my case, the ambient temperature ... The low side will get into upper 20's and when car gets cooler inside it will cycle off compressor at 22-24 psi and then come back on when ... The low pressures may drop to 30psi and the high side could be as much as 230 psi or even more. But, a system that is low on refrigerant the low ... Anyone know what the correct low/high side air conditioning readings should be for a 190e with R12? ... Auto AC systems are inherently leaky to ... I am using a manifold to do all the readings. Anyhow, anyone out there with info about how much psi the ac would need? I have a 2003 Ford Focus ... Pressure/Temperature Chart ; -48, 1.6, 6 ; -44, 1.1, 8.3 ; -40, 3.3, 10.8 ; -36, 5.6, 13.4 ... Low side is usually around 30 psi. High side is more variable with a range of 150 - 200. Do you have any experience working on ac systems? Pressures are variable based on ambient temperature. I should have them from a 2006 Lincoln Navigator shop manual if that helps.