Cool Solutions Unraveling Automotive AC Pressure with Chart

Also remember all these pressure charts ... The other day, I spoke with a guy who does auto AC work and he said something very interesting. ... AC pressures should operate around for a vehicle using R134a refrigerant. I also talk about my recommendations for finding and fixing leaks ... Download the free Pressure Chart ... What Pressure Should my Car AC Be - How To Check Automotive R134a Air Conditioner - Recharge Tips. 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. Pressures relate to ambient temperature. Did you get the pressure from the temp/pressure chart? My FSM normal range is 21-35 low side, 199 ... An A/C System that is working properly should have 150 PSI on the high side and 30 PSI on the low side. ... vehicle you are working on. If this post is about bodywork, accident ... The temperature of the refrigerant determines its vapor pressure (aka ... How to interpret R134a pressure gauges. Understanding air conditioning gauges ... The vehicle should be recovered, vacuumed and charged prior to testing. 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. According to your ambient temp and pressure readings you are probably slightly low on charge. ... Automotive for Marine · $7.39.