Maximize AC Performance with Precision The Indispensable Automotive AC Pressure Guide

Learn about R134a Refrigerant, low-side pressure, high-side pressure of a Car's AC System. Car AC Pressure Chart for diagnosing refrigerant. How to Take the Pressure Readings ; 70, 35-40, 145-160 ; 75, 35-45, 150-170 ; 80, 40-50, 175-210 ; 85, 45-55, 225-250. 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 ... Note: the AC compressor on my S80 failed and this information is after replacing it. ... When applied to my LR2 live data readings, the psi was ... Gauge pressure is the first tool in AC troubleshooting. The table below shows 7 Gauge Readouts that you may encounter. Is there a normal range for refrigerant pressure for when the car engine is off? I have come across various posts online where people say the ... Before the vehicle is started, the static system pressure can be read. ... The PCM gets inputs from the HVAC switch, and from the AC pressure ... So if I'm reading the manual correctly, the correct procedure to measure refrigerant pressure is to set AC to max cold, recirc, max fan, ... Measure the ambient temperature and compare the reading with the pressure-temperature chart of R134a below: In my case, the ambient temperature ... ... readings when the car ... Most people will be inclided to add charge any time the performance of the automotive AC has decreased because the hoses ...