Sounds like it's shutting off due to high pressures in the system. Do you have gauges to read the system pressures? One thing that would cause this is too much freon in the system, or too much oil. Did the compressor come with oil in it or did you add oil to the system? Too much oil and/or freon will give high pressures and the high pressure switch will shut the system off. Or the high pressure switch could be damaged, maybe even unplugged is a possibility. If it is plugged in you could try unplugging it and seeing if the compressor keeps running for longer than 3 seconds, if it does pressures might be too high. It could also be a bad relay getting hot and kicking off. Try switching relays and see what happens. Another possibility is the low pressure switch but not too likely in this case.
When the compressor shuts off, can you turn it by hand? If not, high pressures or even a bad compressor are possible.
Lot's of possibilities. Just have to wade through them. I'd start with the relay and then check the pressures.
Good luck.
It's a 2001 saturn L 300. I checked the clutch and no slack it turns when I turn with my hand. Checked the pressure on the low side very high on the gage. Switched the relays around. Unplugged the high and low pressure switch same result.
If the pressure on the low side is more than 40 psi something is wrong. First guess would be too much freon or the freon can was not held upright and too much liquid freon entered the system. OR if you added too much oil to the system before adding the correct amount of freon. All these conditions can lead to too high of pressures and the compressor will shut off to protect itself.
If the pressure on the low side is more than 40 psi something is wrong. First guess would be too much freon or the freon can was not held upright and too much liquid freon entered the system. OR if you added too much oil to the system before adding the correct amount of freon. All these conditions can lead to too high of pressures and the compressor will shut off to protect itself.
Add a Comment is a link that gives simple instructions on how to charge an A/C system.
Add a Comment is a link that gives simple instructions on how to charge an A/C system.
http://www.aa1car.com/library/ac_recharg... Sorry. Sticking Enter key! Review it and if you don't find any errors in your procedure probably the best thing you can do is start to evacuate some freon from the system and see it it will come on and stay on. Another thought is to recheck how much freon you put in compared to how much the system actually holds. Should be around 33.5 ounces freon and 7.5 ounces oil. But I think you've just ended up with too much freon and need to bleed some off.
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SOURCE: AC clutch goes on and off
This is usually low refrigerant, but yes, it could be a relay, low or high pressure switch.
SOURCE: ac compressor cuts on and off and no cool air blows out .
Too many reasons why but it probably needs to go in for repair. compressors will cycle on and off if the system is under or over filled. If there is a flow restriction, a collapsed high pressure hose, clog somewhere in the system(some vehicle owners put sealant or refrigerant with sealant in it) bad idea. Good luck.
SOURCE: My AC compressor on a 99 V6 Cougar does not stay
no its not the capacitor.
put more freon in it untill it stops cycling on and off.
thats the low pressure switch keeping the comp from killing it self on the suchion side.
it needs more freon .
SOURCE: AC Compressor Cuts Out
Do you have gages you can hook up?check preasure when A/C clutch is on preasure low should be about 30 and high should be about 180,if high side is higher you got a blockage some where usealy they will plug at the recever dryer or the expansion valve
SOURCE: AC compressor clutch is cutting on and off
You have to start by testing the pressure in the system. If it was cycling a lot and then quit it sounds like you developed a leak somewhere and once it fell below the low pressure switch it will not come on.
The system works with a high and low pressure switch that will cut out if the pressure is too high or low. When the system looses pressure it will fall below the low while running, turning off the compressor, When the compressor is off the high side and low side equalize out bringing the stationary pressure above the low limit, turning the system on again. This cycle will repeat until there is not enough pressure when equalized to turn the system back on.
If the pressure is good, go next to the relay, it should be located on the fire wall. if the relay is right, then you need to determine if it is high or low pressure switch shutting it off. IF it is the high, you probably have a restriction in the system, You could also have a problem with the compressor. With the car not running manually turn the clutch and see how much play, smell the area and smell if there is a burnt odor, then try to turn the armature that goes into the compressor. see if it is frozen.
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