What cause the AC Compressor to cycle on and off?
2006 Saturn Ion 2.2L i check the freon pressure it show 25psi and i add a can of freon the compressor wasn't cycle on and off until i add the second can of freon that when the compressor started cycle on and off the pressure stand at 45psi now what i need to do to fix the cycle on and off problem? do it supose to cycle on and off?
Cars & Trucks - Saturn
Answers & Comments
You may have overcharged the system, The Aircon gas which should be r134a has a specific pressure and specific temperatures, so I have attached a chart which will show you this information. You will need to measure the temperature of the engine bay area, connect your pressuring measuring device, check the temperature you have measured to the chart to see what the pressure should be: if your gauge shows more pressure than on the chart then the system is over charged, it lower then it is under charged, adjust the system pressure until it matches the ambient temperature/Chart pressure value.
google r134a pressure chart, i don't know why it won't show my chart.
how many can of freon will 0.9 lbs be?
You may have too much refrigerant in the system. When the compressor kicks on, pressure rises and the pressure switch stops the compressor. You need to get the pressure set properly.
It's more about the amount of refrigerant to get the pressure, but you may have to remove some of what's in the system.