Automotive AC Pressure Charts Unlocking the Power of Diagnostics

I'm far from an expert on car systems. Assuming this is a 134a system. You can look up online approximate "normal" pressures. Why did you choose ... What should automotive ac pressures be. To effectively assess your vehicle's air conditioning system, relying solely on a low-pressure gauge is insufficient. 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. Turn the car on with your gauge hooked up there. IMO take the car to the shop... AC work is not something you should be doing without proper ... The Pressure/Temperature Chart indicates the pressure and temperature relationship for three automotive refrigerants. Vehicles with a model year 1994 and ... 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 ... The online chart shows i need 55 psi on low and 170 on high. I am checking the pressures while engine is warm and idle. Ac on full blast. Ac worked very good ... 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. 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 ... Get a quick look at what an average A/C system looks like, along with the compressor manufacturer and what the specific R-134a requirements are for your car. R- ...