Question about 1998 Oldsmobile Aurora

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98 aurora a/c blows only warm air, evacuated the system and put in a fresh charge or freon but still only warm air, compressor seems to work fine any other advice...?

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  • donprice459 Jun 03, 2010

    When you say you evacuated the system did you use a vacuum pump or just vent the freon? If you recharged system did you use the proper freon (r12, r134, etc) and did you replace oil?

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Sounds like the blend box doors are not opening correctly, have it scanned it might be throwing code and not showing an SES light.

Posted on Jul 18, 2010

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1 Answer

Recharged A/C, so why does it blow warm air?


Is the compressor turning/engaged? How did you recharge the system? Was it properly evacuated and then put into a vacuum for 15 minutes to remove all moisture and air?Is the proper charge of freon and oil put back in?

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Air Conditioner blows warm air in my 2007 pontiac g6


If there is not enough freon in the system there are safety pressure switches in the system to prevent damage to the compressor from lack of oil. First have the system tested for leaks and repair them before adding freon. The system should be evacuated with a vacuum pump for a while to check for seal leaks and to remove moisture that will enter the system .

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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 ?

Jul 06, 2013 | Cars & Trucks

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98 silverado a/c not blowing cold


Cycling a lot is usually a sign of low freon. If you just replaced those items, did you have the system professionally evacuated, and refilled? If not, you likely have air in the system that is displacing the freon.

Jun 07, 2012 | Cars & Trucks

1 Answer

If i am changing out a ac compressor at home. after i am done replacing it what is the best thing to do to recharge the system. i dont have a ac recovery machine an dont have the money to bring it to a...


Well, If you want to do the job correctly, you need to properly recover the freon and then evacuate the system before recharging. Failure to do so is ILLEGAL for the recovery part. EPA laws forbid knowingly releasing freon into the atmosphere. There are some hefty fines to pay if the authorities were to find out. Not to mention that I really don't appreciate people who knowingly and willingly pollute the air that I breath. - take that as you will.

For the evacuation part, failure to properly evacuate your system before recharging will leave moisture in the system that can destroy your new compressor. If that happens, you won't be saving any money!The air that is left in the system will take up room in the system that is needed for a proper freon charge and can adversely affect how well your system cools when you are finished.

Here is a possible alternative. Take it to a shop just for recovery and evacuation. The labor charges will not be that much. In fact, some shops will do the recovery for free if you tell them they can just keep any freon that is recovered. You need to do a recovery to remove the freon from the system anyway so nothing blows up in your face when you disconnect system components. Then you can return to the shop after replacing the compressor and drier fo an evacuation. This is a good idea also because the system can be checked for leaks by evacuating and seing if the system holds vacuum. That way you won't be wasting any freon dumping it into a leaking system.
Then you can recharge the system yourself using one of the kits available at your local parts store.

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Problem with heating and air conditioning. The driver's side is blowing hot air and the passenger side is blowing cold air


Air Conditioner blows warm air
  1. Air conditioner system is discharged. Have the system evacuated, charged and leak tested by an MVAC certified technician, utilizing approved recovery/recycling equipment. Repair as necessary.
  2. Air conditioner compressor clutch not engaging. Check compressor clutch wiring, electrical connections and compressor clutch, and repair or replace as necessary.

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1 Answer

I put freon in my buick park avenue and it only took a lil bit and is still blow hot


u should first evacuate ur system down to vacuum bfore adding freon. chances are system is full of air,therefore not allowing full charge to enter ac system. also make sure ur clutch is engaging at the compressor, u can see wen its on and wen its off.

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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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Several- The system should hold freon for years without leaking. There are pressure switches and they cut off the compressor with an undercharge and an overcharge. You need guages to measure the charge. There are testers the A/C shops have called "sniffers" which can detect a leak. If you have no leak then you need a technician to add or remove freon to get the concentration right. Or you need guages.

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2 Answers

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Either you are out of coolent or the compressor is not working.

First check the fuses, then lift the hood and have a friend turn the air on. The compressor should cycle, if not take it to a mechanic. If it does cycle you are low on freon, take it to a mechanic for a system charge. Make sure they check for leaks first.

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