Car Ac System Pressure Chart

Start your ac pressure readings diagnostic by measuring the system s static pressure.

Car ac system pressure chart.

Check and make sure the condenser fan is turning on. When an air conditioning system loses its ability to cool properly it may be necessary to recharge the system with new refrigerant keep reading for a r 134a a c pressure chart and steps on how to recharge the a c system when the system is low on pressure or has been vacuumed out following a repair. A c pro is the easy diy car a c repair that saves time money. With the engine off for at least 30 minutes read the low and high pressure.

This simple fix recharges the r 134a freon stop leaks gets your car a c cold again. R 134a temperature pressure chart tabla de temperaturas y lecturas. The other usual cause of high pressure readings is that the entire ac system may be overcharged which happens either when there is too much refrigerant or too much oil. Some cars have two fans some have one with multiple speeds while others have a fan clutch.

See the pressure chart below to see what i mean. Static pressure is the pressure with the system at rest compressor off for at least 30 mins. Ambient temperature f c low pressure gauge high pressure gauge. The following table presents the possible inferences and the actions that can be taken based on the level of pressure registered by the high and low pressure gauges.

The most ideal pressure readings are around 150 high and 30 low. Attach to the hoses and gauge set to the high and low side ports of your ac system. System pressure chart 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. In this case pressure must be released by a certified mechanic.

If you don t know which system you have you can misinterpret the low side readings right off the bat and think your system is undercharged. However it s not always that the system is actually overcharged. R 134a temperature pressure chart for orifice tube system engine and ac running. It can be used for recharging refrigerant or to diagnose an a c system based on pressure readings from your gauges.