Question about 2000 Chevrolet Astro

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Air conditioner not charged

While replacing the radiator on my 2000 Chevy Astrovan, I mistakenly released all of the r-134 refrigerant. I now need to recharge the system and do not know what pressure range is required on this make and model. Can any one help me with this info????

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Go to Kragen they sell a R-134 tank with a gauge on it that will tell you exactly when to stop. Grab two bottle of R134 if you do not use the second then return it

Posted on Feb 09, 2009

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Need to know if my 1993 ford club wagon is r-12 or r-134 is there any way to tell from fill ports? the r-134 CANISTERS FIT ON THE LOWSIDE, ARE THE R-12's a different size?


If it is a quick connect fitting, it is R-134a
The low(charge) side fitting is: 13mm
The high side fitting is: 16mm

If it is a threaded fitting with threads on the outside, then it is the older R-12 refrigerant and can only be serviced by a licensed air conditioning service.

The low(charge) side is 7/16" threads
The high side is 3/8" threads

When servicing your air conditioner it is best if you have gauges, but it can be done without, just be careful.

Assuming the air works, but just not putting out that much cool air, then 1 or 2 cans of refrigerant won't hurt.

If there is no pressure/refrigerant in the system at all then it is usually a sign of a leak and should be taken to a pro because you may need to replace the receiver/dryer and have the leak fixed. The system needs to be evacuated for maximum efficiency if there was a leak or if hte system has been opened.

Adding too much refrigerant can be catastrophic as the high side pressures can reach 200-300psi on a hot day. So if you happen to have a low side gauge, and it reads somewhere between 35-45 with the Ac operating, you are golden.(tire gauge won't work)

Don't be surprised if the compressor doesn't kick on right away. Some vehicles are equipped with a pressure switch to keep from damaging the compressor if it runs low. Usually after adding one can, it is enough to engage the compressor.

Hope this helps.

Mark

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1 Answer

AC needs charge/ where is port?


Yes all cars since 1993 are 134. If this is a v6 look under the air filter box and on or around the accumulator. That is a silver colored cylinder with the A/C hose going in and out.

Hop this helps.

Also if you are going to charge this your self, if you have lost all pressure you have to find the leak, then you have to vacuum down the system to 30 inches of vacuum or it weill not get very cold.

If you have a very slow leak and you have not lost all your charge yet sometimes the 134A precharged can with sealer will work to seal up and refill, do not overcharge. If you have a guage the standard for most systems is 60PSI on the Low and 200 on the high side while running.

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1 Answer

Air conditioner in 2000 Dodge Caravan Needs to be Replaced


Cost of repair will depend on which component of the AC system needs repair/replacement. There are several components to the system, with each component costing different amounts and each requiring different amounts of labor to repair or replace.
But, how do you know there is no refrigerant left in the system? Have you had the system charged recently and it leaked out?

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1 Answer

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You can find that info right on the sticker on the compressor. If it takes 134, it will have quick release fittings on charge port (even if conversion has been done) R12 systems have screw on ports.

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As long as the belt is turning the compressor than the only other thing would be that the refrigerant (R-134) is not full. You can buy re-charging kits at any local auto parts store, although they recommend that you have a licensed dealer remove the old refrigerant so it dosn't go into the atmosphere. Good luck.

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How do I change the a/c accumulator?


you will need a garage to discharge the system.you will need a haynes repair manual to locate the accumulator .the manual will tell how much 134 refrigerant put back in system and refrigerant oil to put back in. you will need a vacuum pump to pump system down before charging it up.WARNING WHEN WORKING ON AIR CONDITIONERS WEAR SAFETY GLASSES.THE REFRIGERANT 134 CAN DAMAGES EYES .VERY HARMFUL TO INHALE.

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Your car uses the new refrigerant, R-134.

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1 Answer

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you need to have it re charged with freon.they sell cans of it at the auto parts store..ask for refrigerant 134 kit..

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