Question about 1992 Acura Legend

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Air problems i have been working on my ac but am completly stumped!! i add the refrigerant and it holds pressure as soon as the compressor kicks the pressure goes to 0.did same thing again with dye and it is not leaking anywhere in the engine compartment. where could it be going????

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It could be leaking anywhere in the system. it could be the condensor,evap core the dryer at each connection or it could be the expansion valve or the vlave cores in the ports you use to hook the guages to. take your time with the dye and i'm sure you will find that leak.

Posted on Sep 01, 2008

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My air condition work only when I hot wire the compressor clutch. Otherwise it not engaging when I turn on the ac.


You have to insert a can of R134A refrigerant and hose on the low pressure port.
Normally it is the fatter of the two hoses coming from the compre3ssor.It should then kick in with the A/C switch engaged.
If not you may have a bad fuse,switch,compressor,or relay.

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I have a 2001 Ford Mustang V6, the ac is blowing warm air. We checked the refrigerant and it is full. The ac compressor will kick on for a few seconds and then kick off. Why is the compressor not staying...


it's either low (in spite of your readings) or your a/c clutch is not working correctly or you have too big an air gap in the clutch.
First, just disconnect the 2 pin connector from the a/c pressure cycling swithc and jumper the 2 pins with a wire to force the clutch to stay engaged. See if it blows cold then, and stays engaged. You can run this way for about 15 minutes before you have to pull the plug.
report reulsts.

please don't forget to rate.

Sep 01, 2011 | 2001 Ford Mustang

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If the compressor came on when you were testing it with a test light, it sounds like something is wrong with your ground for your compressor, and completely the circuit through your test light.

Jul 01, 2011 | 2003 Honda Civic

1 Answer

My AC is having trouble. It seems to only work once out of every 50 times I have tried to run it. I checked the freon with a AC gauge I bought and followed the instructions and it said the levels were up...


Hi, first of all, you will want to verify that your compressor is kicking on. Open hood and located A/C compressor. Have a helper start the engine and and then turn on A/C to maximum with blower at full speed. See if you hear and observe the compressor kick on. The outer portion of the compressor outside the pulley is the clutch. It should make a click and begin to spin along with the pulley. If it kicks on ok, does your cooling fan at the radiator kick on also? May need to run the engine a few minutes to verify that. If so and you are reading a full charge at the low pressure port at this time, you have air in the system and it should be completely emptied and then re-filled with around 3 LBS of R134a refrigerant until you read a low pressure side of 45-50 PSI. Then you will be blowing cold air.
Please rate this answer! Thanks, Mike

Jun 14, 2011 | 1999 Jeep Cherokee

1 Answer

We tried adding freon to our 98 Montero AC unit but when we attempt to it says the it is at full pressure and will not let us add any but it is only blowing hot air with the ac on, so we do not think it...


Hi, if you have full pressure (40-50 PSI on low pressure side with engine running A/C set to maximum and blowing) you have enough pressure, but there is air in the system which degrades the refrigerant leading to no cold air. To remedy this, you must completely discarge the system and refil with new R134a which has the compressor/system oil added to it.
To discharge the system, shut off motor, attach your filler hose to low pressure valve and allow system to drain. (squeeze handle if you have that type filler hose) Allow it to drain until no sound of escaping air is present. Be careful not to have the end of hose facing you or others, wear gloves and have some shop rags laid down, pointing nozzle toward rags, that stuff can damage paint and skin and may be cold when escaping. After system has completely drained, start the refil process with engine running, A/C on maximum, blower on full. After about 1/2 of the first can of R134a or 1 full can, your compressor should kick on. Continue refilling with 3-4 cans total (about 3 LBS total) until you have a reading of 45 or so PSI. After each can, allow refrigerent to cycle through the system about 3 minutes to obtain an accuret pressure reading. Pressure is relavent to outside temperature also, optimumly the ambient air temp. outside vehicle should be between 72 and 80 degrees F. for proper reading. That should get you blowing cold air again!
Please rate this answer! Thanks, Mike

Jun 14, 2011 | Mitsubishi Montero Sport Cars & Trucks

2 Answers

AC was blowing cold. Now only warm air comes out.


May just need to be recharged, if r34 is too low, ac will not kick in, Wal-mart sells recharge kits and cans of r34 (insctructions are on kit)...expect to pay around $50 total if you do it yourself. If that doesn't work you may have to replace the AC compressor.

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On my 2003 Chevy Silverado, the A/C compressor won't kick on. Just blows out warm/hot air.


The ac system may need freon added,if the system is low,or out of freon,it will not allow the ac compressor to come on.

Apr 11, 2010 | 2003 Chevrolet Silverado 2500HD

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you havent check the pressior of the compressor make sure is full loaded

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97 Olds Aurora AC blowing warm air a day after recharging system


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2 Answers

A/C went out on a 1999 Chevy Cavalier


What do you mean by went out,if it just one day stopped working,it could just be low on freon.does the a/c compressor come on? to find out....start engine..turn a/c completely off....turn on a/c....as soon as you turn on a/c you should hear a click sound under the hood,if you dont hear click,you may just be a little low on freon.you can add freon yourself instead of paying alot at a shop.buy some r134 refrigerant,walmart sells several differnt brands just make sure it comes with a hose to add with.find your a/c low pressure line on car.....connect hose attached to refrigerant bottle...snap onto fitting on low pressure on a/c line.....start car with ac on add refrigerant......soon you should here a click....if so that was the compressor coming on,add freon until guage on bottle is in the safe zone. Ihopoe this helps you,if it doesnt you may need to take it to a shop.

Aug 12, 2008 | 1999 Chevrolet Cavalier

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