Automotive 134a Pressure Chart

R 134a is the most common refrigerant found in automobiles today.

Automotive 134a pressure chart. With the a c turned off on a cold day the pressure will be low on a hot day the pressure will be high. I went to a place that does a c service and they got it to work. 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.

This simple fix recharges the r 134a freon stop leaks gets your car a c cold again. The most ideal pressure readings are around 150 high and 30 low. My white car didn t cool down i thought something broke.

The system should be recovered vacuumed min 20 minutes and charged. Yeah you have to service it at regular intervals. Remember venting 134a refrigerant into our atmosphere is illegal and bad for our environment.

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. It has been in use since the early 1990 s and now in 2019 we are beginning to see it s popularity wane with the rise of the new hfo refrigerant known as r 1234yf. The table below shows the comparison between temperature and pressure for r134a.

The gauges readings will depend on the ambient temperature. They said that the a c has never been serviced. It can be used for recharging refrigerant or to diagnose an a c system based on pressure readings from your gauges.

There are no leaks nothing is missing pressure was okay on the high and low end. That being said there are still millions of cars on the road that. By jamco auto parts r134a pressure gauge chart this chart details how ambient temperature correlates with the system refrigerant charge pressure and how it affects high and low side psi readings.

A c pro is the easy diy car a c repair that saves time money. As an air conditioning refrigerant in newer automobiles the optimal running pressure for r134a is between 22 and 57 pounds per square inch. R 134a temperature pressure chart for expansion valve system engine and ac running ambient temperature f c low pressure gauge high pressure gauge 60 f low side pressure 7 15 psi high side pressure 120 170 psi 70 f low side pressure 7 15 psi high side pressure 150 250 psi.