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Anonymous Posted on Jul 06, 2013

Chevy s10 ac

After evacuating ac system, recharged. But the compressor cycles on and off every few seconds and still blows warm air. is there a filter that may be clogged?

1 Answer

Stephen

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  • Cars & Trucks Master 21,873 Answers
  • Posted on Jul 06, 2013
 Stephen
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Joined: Jun 22, 2012
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How much freon have you put in ? Is it full ?
Do you have constant power going to the ac clutch ?
And what are the high and low pressure readings ?

5 Related Answers

GM Elec

Bruce Bracey

  • 1000 Answers
  • Posted on Apr 26, 2009

SOURCE: AC has stopped blowing cold air. Compressor is working. Where is the recharge valve located?

There are two A/C refrigerant lines. The small line is your high pressure line and the larger line is your low pressure line.
Start at the fire wall and follow the "large " low pressure line to the compressor. The low pressure charge port will be some where on that line.
DO NOT try to recharge on the high pressure side ( small line )
Good luck, let me know.
Regards,

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Anonymous

  • 5 Answers
  • Posted on Jan 06, 2009

SOURCE: 1996 chevy s10 heater not blowing hot air

heater core or leak on cooling system

Anonymous

  • 218 Answers
  • Posted on May 07, 2009

SOURCE: AC still blows hot air

CYCLING COMPRESSOR COULD MEAN TOO MUCH OR TOO LITTLE FREON.TAKE IT TO AN A/C SHOP

Anonymous

  • 3600 Answers
  • Posted on Jun 17, 2009

SOURCE: AC blows cool air on passenger side but warm on driver's

Yes there is both a door and a flapper you have a problem with a blend door motor, it is not switching to cold it is half open and half closed so you need to replace the motor vacuum motor it is under the dash near the heater on the passenger side and if it is the other motor under dash you will have to take part of the dash apart to get to it, to test buy a piece of vacuum hose 1/8 inch diameter about 3 feet long and you can hook it to each of the vacuum motors and **** on the end of the line to see which one is causing you the problem, also could be the control head for the AC inside the car where the controls are, you have to remove the ac cluster ot get to the vacuum switch it's all vacuum operated and if you pull it out you will be able to here an audible sound of air leaking if it's the switch.

Anonymous

  • 2 Answers
  • Posted on Jul 24, 2009

SOURCE: AC blowing warm air

When they refilled the refrigerant did they put die in it to check for leaks, it sounds like there may be a leak.

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Compressor keeps turning off and on. Stays on for about a minute. Cycles off. Then stays off. Does recycle after a few minutes. How do I add coolant and where.

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.
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2008 Trailblazer Air Conditioner not cooling. blows warm air for the first few miles then cools. It has been recharged.

Philip, You may have to have a good tech, check,diagnose and estimate repair. Could be a few things causing poor AC, recheck your charge level,check your fan at the condenser, make sure the condenser isn't obstructed, compressor clutch could be faulty, system could be plugged with contaminates limiting refrigerant flow.You say the system has been recharged, was it done properly, if not system could be plugged. AC system should of had system checked for leaks,evacuated, flushed, new orifice tube, then recharged with proper quantities of oil and refrigerant. Check the attached links,instruction and guides, Good luck
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Air conditioning blowing warm air.

first of all why did you charge the system it never needs to be recharged unless you have a leak in it that being said when you turn on the ac do you hear the compressor clutch kick in and if so do you see condensation on the accumulator and does it feel cold? yes/no if yes then the vacuum door inside the car is not opening thus giving you warm air========if no the refrigerant leaked out again because of a leak ///// or the cycling switch is bad///// or there is still not enough refrigerant in the system to get the switch to turn on the compressor//// or your compressor is n/g
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Ac blows cold air..then will blow vent temp air for 5-10 min...then back to cold air...about every 5-6 days or so. Had ac check...1# coolant added??no leaks per black light??? Air is cold when works.

The system needs to be evacuated with a vacuum pump before it is recharged. Otherwise moisture may be in the system which will displace and contaminate the refrigerant. Get it evacuated, the orfice filter replaced then recharge. Should be fine..
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GMC Acadia AC not working properly

Not sure if I'm too late to answer this one, but you're describing a low refrigerant condition. The hissing noise and constant cycling of the compressor clutch are indicators of that. You should recover the system, record how much refrigerant was recovered, evacuate the system (with a vacuum pump), add A/C dye, and recharge the system to capacity. Common leak areas on these vehicles include the A/C condenser (located in front of the radiator), and the evaporator (located inside the dash, and requires complete removal of the interior dash to replace it). If you can't find a visible leak after running the recharged system with dye for several weeks and it starts to blow warm again, you will need to use an R-134a leak detector to "sniff" areas of the system for a refrigerant leak.
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No AC, then recharged, now compressor makes on/off clicking noise while running with AC on

This still sounds like low pressure. If you re-charged a system that was low, and didn't pull a vacuum and evacuate the system first, then you still have air in the system, which is causing the compressor to cycle on and off.
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I have same issue. I took to Chevy dealer they could not find problem (whats new) then I took to trusted mechanic.
They measured voltage at compressor and found out when idle the voltage dips below manufacturer specs, then when RPMS go up it gets more juice so the compressor then starts to work properly.
Chevy claims its made that way to extend compressor life.
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My ac does not work properly when I add freon the ac will work well for about 5 minuted then will blow warm air hoping some one could give me an idea what might be wrong, ie what to replace to fix it.

does the compressor keep cycling on and off ? if so then it is low on refrigerant causing the cycling, sometimes you have to bypass the compressor pressure switch to stop it from cycling long enough to get enough refrigerant in the system, but of course you need to check for a leak if you are trying to recharge the unit then add a refrigerant with dye solution in it to locate any leaks, note leaks and then evacuate system amd rapair the leak source and then draw the system down add the proper compressor oil or refreigerant with oil in it. you may want to have a qualified AC repair facility do this , so they can properly evacuate and recover the refrigerant material... thanks , please rate my help...
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My air is blowing warm can i use 1342a?

The real answer to your question is yes, the kit may work. Here is why you shouldn't use a recharge kit: Theoretically, your vehicle's refrigerant (R134a) should last forever. Your AC system is a sealed unit and the refrigerant never gets used up. The only way you can lose refrigerant is by it leaking out of the system. However, if your refrigerant can leak out then air and contaminates can get in. This is bad. A recharge kit simply injects refrigerant into the system. It doesn't evacuate the system of any air and contaminates.This is critical. Your AC system should be hooked up to an AC machine in order to evacuate out all of the air and contaminates in the system. The machine will then hold a vacuum on the system to verify its integrity.Finally, the machine is able to inject new compressor oil that also contains a dye that will enable the leak to be located. If you use that recharge kit, you stand the chance of over pressurizing the AC system and causing premature compressor failure. This can be very expensive. Paying a reputable shop to evacuate and recharge your AC system is much less expensive. If your AC system hasn't operated in over 6 months, it's especially critical that you have the repair to your AC system performed correctly. Your AC system's seals may have dried out and the new compressor oil will be critical in helping to recondition those seals or the seals may need to be replaced. Good luck and hope this helps. keep me posted if you need help to recharge the system.
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