Automotive Ac System Pressure Chart

The table below shows the comparison between temperature and pressure for r134a.

Automotive ac system pressure chart.

R 134a temperature pressure chart tabla de temperaturas y lecturas. A c pro is the easy diy car a c repair that saves time money. The system should be recovered vacuumed min 20 minutes and charged. Teo on july 23 2018.

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. With the a c turned off on a cold day the pressure will be low on a hot day the pressure will be high. The most ideal pressure readings are around 150 high and 30 low. The warmer it is outside the higher the pressure will be.

This could be a bad txv h block or blocked orifice tube depending on your system. However it s not always that the system is actually overcharged. The low pressure side is 80psi and the high pressure side is 105psi. 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.

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. Remember venting 134a refrigerant into our atmosphere is illegal and bad for our environment. In this case pressure must be released by a certified mechanic. Pressures can vary from car to car based on the system and the pressure in your system will also vary with the ambient temperature.

The gauges readings will depend on the ambient temperature. For a general reference you can check out this chart of r 134a system pressures. Attach to the hoses and gauge set to the high and low side ports of your ac system. Start your ac pressure readings diagnostic by measuring the system s static pressure.

With the engine off for at least 30 minutes read the low and high pressure. The ambient temperature is 32 degree. My car ac static pressure is not equal. It can be used for recharging refrigerant or to diagnose an a c system based on pressure readings from your gauges.

This simple fix recharges the r 134a freon stop leaks gets your car a c cold again. Static pressure is the pressure with the system at rest compressor off for at least 30 mins.