Question about 2001 Pontiac Sunfire

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The compressor was engaging but wouldnt blow cold the dealer said it was leaking at the spader valve and the low side o-rings at the evap, and that that needed fixed and then they would recahrge it. i told they to stop and i would fix it. i think there is a stuck valve or something when i took to the dealer i had 75lbs at the low side and 150lbs high side.They took it all out a i thinks its a valve in the lowside whats up

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Its the number 2 on the picture

the compressor was engaging but - f1ca813.jpg

Posted on Aug 05, 2010


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1 Answer

Ac not blowing cold/low pressure too high and high pressure about the same as low pressure side/ compressor engages but no cold air

Pressure has built up in the system possibly from a clogged orifice tube/expansion valve. Replace the orifice tube/expansion valve, thenPull a vacuum on the system and recharge.

Mar 29, 2018 | 2008 Saturn VUE

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Why my acadia its blowing hot air when a/c is on

several reasons why ac not blowing cold. Most common a freon leak causing system to be undercharged. electrical and component failure may also be a factor. You need a set of gauges. find the compressor start engine with a c off the compressor clutch wont be engaged now turn it in on and see if clutch engages. If it engages you need to know what your low and high side readings are. You should have your system diagnosed be a seasoned pro...... If clutch does not engage you probably are low on freon. Put dye in the system so you know where the leak is when it leaks again. you can buy freon with dye already in it.

Jun 09, 2014 | 2009 GMC Acadia

1 Answer

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.

Apr 22, 2013 | 2009 GMC Acadia

1 Answer

My air conditioner is blowing warm air on the driver side and cold on the passenger side

see this steps and think with clearly and logically NOT feared. God bless you
checkmark.gif Start with the compressor. Does it engage when you turn on the A/C?
If so, the compressor is working and the A/C system probably contains enough refrigerant to make cold air, so the problem is inside the HVAC unit. Replace the motor that controls the blend air door (this is a difficult job and best left to a professional since it involves tearing apart the HVAC unit -- about an 8 to 10 hour job!).
If the compressor does not engage when you turn on the A/C, see if it will run by jumping the compressor clutch wire directly to the battery (use a fused jumper wire). If the compressor works when you jump it, and the A/C blows cold air, the system contains refrigerant and the fault is likely a bad A/C compressor clutch relay or a bad clutch cycling switch or pressure switch.
If the compressor does not engage when you jump it, the problem is a bad compressor clutch.
If the clutch engages but the compressor does not turn (the belt will start to slip and squeal), the compressor is locked up and you need a new compressor.
If the compressor clutch engages and turns the compressor, but the A/C still does not blow cold air, the system is probably low on refrigerant and needs to be recharged.


Jul 24, 2012 | 2007 GMC Sierra Classic

1 Answer

AC blows cold air and then quits. Turn the truck off and then it starts blowing cold air again. Seems to happen when it is extremely hot weather. This has happened several times. Dealer recharged(low...

Hello: When the condition occurs pull over, do no turn engine off, open hood on the passenger side there is a line that comes out of the accumulator, if it is white(frosted up) the you have a low pressure switch that is not working properly. This switch cuts the compressor off to keep the system from freezing up. If you have this condition you can fix it yourself. Get a new switch and o ring, put a small amount of oil on the o ring. Unscrew the old switch, screw the new one in (electrical connector disconnected before removing old switch) connect the connector. You will not loose the freon as there is a schrader valve that will keep the freon in the system.

Aug 10, 2011 | 2000 GMC Sierra

2 Answers

When i turn on ac it blows hot air

Normally due to low freon. Also, notice if the a/c compressor clutch engages, as it will not if the freon is low.

Jun 05, 2010 | 1999 Chevrolet Silverado 1500

1 Answer

Oil leak on aircon compressor and does not blow cold air. have refilled gas twice and blows cold for one day and warm the next day.also compressor does not engage

if oil is leaking on the compressor you may have a valve cover gasket leak have that replaced and that will stop your leak problem.your compressor has a leak in it also thtas why its not engaging. you should have it dye tested in order to find out what really is leaking in the system.

Dec 11, 2009 | Toyota Camry Cars & Trucks

2 Answers

AC does not blow cool or cold air. Fan works fine heater works. Filter and fluid levels have been checked.

Does your compressor cycle on and of. It should cycle every five minutes or so. You should see the clutch engaging or at least here it when it does. If not you have one of two problems. A bad compressor(bad clutch, ceased compressor piston, ((or bad cycling switch))) or your system has a leak. Now ac system have a bad habit of just being fickle. The leak could have fformed anywear in the system. Most common places are the shrader valves in the high and low side service ports. these ports are usually located on the alluminium lines or near the compressor. leaks will also commonly form as a result of old and dry o-rings. I would suggest finding your high side port and test bleed it. Do this in an open and well ventilated area. cover your nose and mouth with a wet rag and avoid breathing in any freon that may be expelled from the system. if no white mist comes out then the system is dry or at low pressuer. You can buy a leak detection kit from your local parts store. I hope this info is helpful.

Aug 21, 2009 | 2005 Kia Sportage

2 Answers

Air conditioner blower stopped working on 2004

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


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.

Hopefully this answers your question and you're able to get your AC working again. Best of luck.

Jul 29, 2009 | 2004 Honda Accord

1 Answer

2001 cavalier air conditioner blowing hot air

Why do they want to replace the compressor?noisy?If you can put a charge on the ac then it's hot again after a day,then you have a leak.all the ac lines have o-rings where they are connected.without put dye in the system you wont know for sure.So I would try that first.

May 25, 2009 | 2001 Chevrolet Cavalier

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