Decoding Automotive AC Unraveling the Mysteries with Pressure Charts

Accoding to those charts, if outside temp is 95F, then low side pressure ... More to the point, does the AC cool the car when it is 95? If so, go ... Learn about R134a Refrigerant, low-side pressure, high-side pressure of a Car's AC System. Car AC Pressure Chart for diagnosing refrigerant. 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. I just did my first automotive AC repair, after the compressor in my ... r134a pressure chart. At the time, it was 82F in my garage, so ... Before the vehicle is started, the static system pressure should be read. Pressure values should be very nearly equal on both LP and HP gauges. The actual ... R134A Pressure-Temperature Chart. -49. -45. 1. -17.2. 51. 10.6. 101. 38.3. -48. -44.4. 2. -16.7. 52. 11.1. 102. 38.9. -47. -43.9. 3. -16.1. 53. 11.7. 103. 39.4. Gauge pressure is the first tool in AC troubleshooting. The table below shows 7 Gauge Readouts that you may encounter. At 85 degrees Fahrenheit, R134A shows a pressure of around 90 pounds per square inch. Much lower readings suggest the system is low on charge or contaminated ... R134a Pressure Gauge Chart ; 90°, 50-55 psi, 250-275 psi ; 85°, 50-55 psi, 220-250 psi ; 80°, 45-50 psi, 175-220 psi ; 75°, 40-45 psi, 150-175 psi ; 70°, 35-40 psi ... ... vehicle you are working on. If this post is about bodywork, accident ... The temperature of the refrigerant determines its vapor pressure (aka ...