If there is still an issue, please go back to the diagnosing your ac page here. Low side into vacuum, high side normal. An automotive air conditioner has a high and low side, divided by a metering device and the a/c compressor.
Now, Watch The Low Side Gauge For Another 30 Minutes.
If the low gauge reading is less than this, the a/c system probably needs some additional refrigerant. Test pressure cap & system thermostat. 1) the first thing i do is insert a temperature gauge in the middle air vent ( the middle vent gives you the most accurate reading ) start the car and turn the air conditioning to max and take a temperature reading.
The Blue Gauge Is The Vacuum/Pressure Gauge.
Manifold gauge readings a manifold gauge set measures refrigerant pressures inside of an air conditioning system. The most ideal pressure readings are around 150 high and 30 low. Temp control set at max cold.
The Correct Reading Will Display Once The Clutch Engages And The Gauge Stops Cycling.
On an 80 degree day, the low gauge should read about 56 psi or higher if the a/c system contains an adequate charge of refrigerant. Car ac blowing hot air after recharge a/c gauge fluctuation reading jumps up down problem fix overcharged car air conditioner gauge bouncing in red, car ac p. I put my guages on it and this is the readings low side read 125 constant high side was going from 200 to 300 cycling
On A 90 Degree Day, The Low Side Reading Should Be About 70 Psi Or Higher.
Discharge 180 to 225 psi. >add gas in 1/2 minute to 1 minute bursts (opening the tank valve about 1/2 turn) >give the system pressures time to. An ac gauge is also known as the manifold ac gauge set, is a device which helps in reading and controlling the pressure of the gases to be released for air conditioning.
When Done, Run The Vehicle With The Gauges Still Connected And Record New Pressures.
What is normal automotive air conditioner pressure? If the gauge is showing pressure when connected then the valve on the air conditioning system in your truck is working and allowing pressure into the feedline of the refrigerant can. Louver controls set at max cold air settings (max ac) blower set at high speed.
