Dominating A/C Maintenance The Importance of High vs. Low Pressure Ports

Certified A/C tech and body man here. The port behind your engine is the low pressure port. The high pressure port is under the black plastic ... HVAC - 2018 Ecoboost Low pressure port SIZE? - I am trying to determine why my A/C doesnt blow cold, and wish to check freon pressure. Any low pressure below 20 psi will begin to freeze the evaporator core and basically reduce the cooling ability. The low pressure switches are ... I rented the gauge set at Autozone and compressor off,I had approx. 95 psi on high and low side. Compressor on, low: 45-50 high: 198-200 and ... the low side is closer to the firewall. and will be cold to touch. The orfice tube is locate between the 2 service ports. Of course you can add ... The compressor creates high pressure by compressing the low pressure vapor from the evaporator so that the high pressure vapor can release heat at the condenser ... Both the low and high side ports are on the compressor itself rather than on the suction and pressure hoses as is more typical of modern cars. Which also requires bumper cover removal. My low pressure side read 40ish psi on a 70 degree day with Compressor running and air blowing ... Very high on the high pressure side and low on the low pressure side. First check to see if the condenser fan is running at full speed. If ... 250psi isn't too high. The a/c pressure switch turns off the compressor if the pressure is below 28psi or higher than 460psi.