Thread: Air Conditioner Compressor

Your AC pressure is low thus the reason for the off and on action. It needs a recharge. Maybe a small leak.

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^^^yup, you probly notice it more in gear (driving) because as the rpm's increase,the suction pressure drops.Then the low pressure switch cuts off the compressor.Then the pressure goes back up and kicks the comp back on.

you can use those refill bottles from the parts stores. they work, yes its that easy screw it on the line push the button, fill till its in the green on the gauge on the can. done.

but being your low now, it leaked out, so it wont last forever. maybe a week, maybe till next year. in the end, you want to find the leak and fix it, or your dumping 30 bucks a can into it all the time maybe.

PLEASE BE CAREFUL!

Those cans are nice but they can increase the pressure to an unsafe level which can lead to compressor or line failure. The proper way is to have the car put on an a/c machine. It sucks the system dry and puts a vacuum on the system. Then it applies freon while the pressure stays at a safe level. Just a heads up.

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If your system is only a little low, just use the cans.If you get one with a little gaugeface on it, it will show you pressure,read the directions on the can and you wont overcharge it.You only need to vacume the system down if you got air in the system.Its not a big deal.Non-condensables (air) will only get in the system if it is out of freon, or very low with the compressor pulling a vacuume.

(I am a nate certified commercial HVAC tech)

Putting a vacuum on the system with the machine removes all the freon from the system ensuring the proper ammount of freon goes into the system. So yes the proper way (and considering the machine is automated) is for it to be pulled down and refilled to spec.

I agree the cans are fine if you use the ones with a gauge.

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