Automotive Ac System Pressures

Knowing what the pressures are in the air conditioning system in your car can tell you almost all you need to know about how your system is functioning.

Automotive ac system pressures.

Remember venting 134a refrigerant into our atmosphere is illegal and bad for our environment. Start the engine and turn on the air conditioner. Do they move closer together high side gets lower while low side gets higher or do they. The low side should be near 30 psi at 90 degrees fahrenheit or less.

It can be used for recharging refrigerant or to diagnose an a c system based on pressure readings from your gauges. Actual readings will vary according to ambient temperature. Pressure that is too much lower or higher shows there is a problem. Ac pressure used to be difficult to measure and require expensive tools but with advances in technology and the help of local auto parts stores it has gotten easier to measure one part of your.

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. 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. The ac system in your car could go through all sorts of problems one typical issue is the unit not blowing cold air which could be punishing in hot weather. You can t accurately diagnose your car s ac by using just the low pressure gauge on a recharge kit because you re only seeing pressure on the suction or low side of the entire system.

In this case pressure must be released by a certified mechanic. The most ideal pressure readings are around 150 high and 30 low. 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. 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.

R 134a temperature pressure chart tabla de temperaturas y lecturas. There could be several causes leading to this condition including compressor issues low level of refrigerant trouble with the heater or ac controls and others. What is normal automotive air conditioner pressure. With the gauges connected rev the engine to 2000 rpm and watch what the pressures in the ac system do.

Make sure you are not wasting money replacing wrong parts. However it s not always that the system is actually overcharged.