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It all depends, has the AC system been recharged?
If it has and it's not blowing cold air it could be that the AC compressor is ceased. If the AC recharge has been done by you, did you make sure that there was no pressure in the system with an ac compressor vacuum? If the AC Compressor had some pressure left in it and it was recharged without first vacuuming the system, that can cause it to lock. Another possible issue is that it has a small leak somewhere.
It is normal for the compressor to cycle - when a certain pressure is reached in the system, a pressure switch disengages the compressor clutch, and then activates it again when then the pressure drops below a certain point. Unless your air temperature doesn't stay relatively constant, there is no need to do anything. If it doesn't, the system may need recharging and that should only be done at a certified repair shop.
first thing check AC compressor fuse.the AC compressor clutch should engage when you turn on airconditioner if AC compressor dont come on and fuse okay compressor clutch is open or low on refrigerant you need check your AC refrigerant low pressure side and high pressure side need a manifold gauge set. best let garage check out AC system could need system recharged or could have leak in the system.
This just happened to me yesterday. First, push the AC button to turn the AC off. Then, find the fuse pannel on the driver's side under the dash. Mine is behind the ash tray. Replace the 10 amp fuse (marked fuse #18 on my 1995 Camry manual) and the windows, spedo, tach, etc will come back on. My problem is the bearings on my AC clutch heated up a plastic piece between the AC clutch and AC compressor and the plastic piece blew up and sprayed hot plastic all around the AC compressor. The car runs, but no AC and if I push the AC button, the fuse blows again. I am planning to unbolt the compressor from the engine block, and replace the clutch assembly and pully without disconnecting the hoses. Disconnecting the hoses will vent coolant to the atmosphere and require professional equipment to clean the oil from the system, pull a vaccuum and recharge the system. The AC compressor clutch assembly is available at Advanced Auto for $98. The whole compressor is $247 but requires a lot of work to recharge. You could also take the clutch assembly or whole compressor off and just leave it off and get a shorter (40" in my case) belt to go just to the alternator.
Good Luck.
If you are still getting air from the vents but it is not cold then you either have a bad compressor or just need to recharge it.
With the engine on in idle, turn on the AC and watch the RPMs. They should drop about 50-100 when you turn it on, also listen for the sound of the compressor kicking in. If you notice either of these things then the compressor is probably fine and the AC just needs to be recharged.
Head to your local auto parts store and pick up a recharge kit. The kit will have pretty good instructions on how to recharge it. If you are having difficulties following them just let me know.
I had the same problem with my LeSabre. I took it to a mechanic and he found nothing wrong. Said it was an old car and things like that go out. I took it to a local ac repair shop. Turns out that the ac needed recharging. Anytime the freon is low, the ac compressor will not engage, to prevent the compressor from burning up. Freon contains oil that lubricates the internal parts of the compressor. Have the system checked to find out if a simple recharge is needed.
If the blower works but its just not blowing cold air, its possible to recharge the AC system yourself. Most auto parts stores carry AC recharge kits. Instructions to recharge the AC are belowl
RECHARGING AC SYSTEM
1.Turn the truck on and turn AC on HIGH 2.Locate the low side AC line (will have a valve and cap similar to the cap on a tire) 3.Insert the oil or R-134A can to the hose (Do not turn the screw to puncture the can yet) 4.Insert the other end of the refill hose to the low side valve 5.Puncture the R-134A can with the screw on the refill hose 6.You should feel the system suction the refrigerant out of the can 7.Check for frost on the AC lines and the air blowing inside the truck 8.If frost develops and the air is cold, you've successfully recharged the system and disconnect the refill hose. DO NOT ADD MORE REFRIGERANT...overcharging the system will damage your compressor and will be less effective
Best of luck and enjoy your vacation. Greg
Hopefully this answers your question and you're able to get your AC working again. Best of luck.
I had the same problem. The thing is you need to have the air on while you're recharging it and the compressor won't turn on. I was able to recharge the air by disconnecting the positive battery cable and reconnecting to reset the computer and immediately have someone inside the vehicle turn the air on before the computer can recognize that the refrigerant is too low and disable the compressor again. This will allow for the compressor to turn on and for you to recharge the air. Make sure that you have the replacement refrigerant connected before you turn the ac on so the refrigerant goes in and keeps the compressor on before the computer catches it again.
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