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Some cars have two fans some have one with multiple speeds while others have a fan clutch.
Car ac system pressure chart. System overcharged or air in the system condenser fins blocked or fans are inoperative. However it s not always that the system is actually overcharged. This simple fix recharges the r 134a freon stop leaks gets your car a c cold again. 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.
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. 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. With the engine off for at least 30 minutes read the low and high pressure.
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. Start your ac pressure readings diagnostic by measuring the system s static pressure. It can be used for recharging refrigerant or to diagnose an a c system based on pressure readings from your gauges. 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.
In this case pressure must be released by a certified mechanic. A c pro is the easy diy car a c repair that saves time money. 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. R 134a temperature pressure chart for orifice tube system engine and ac running.
Check and make sure the condenser fan is turning on. See the pressure chart below to see what i mean. Ambient temperature f c low pressure gauge high pressure gauge. Remember venting 134a refrigerant into our atmosphere is illegal and bad for our environment.
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