The low pressure charging valve is on the accumulator........
Buy a kit at Wal-Mart or auto parts comes with instructions
You need to convert the AC system to R-134a type freon first (retrofit kit). Then you charge it on the low pressure side.
To add Freon to a 2005 Pontiac Grand Am, locate the air conditioning service ports under the hood. The low-pressure service port is typically found on the larger diameter aluminum line, usually closer to the firewall. After identifying the port, attach the refrigerant gauge or canister and follow the instructions on the refrigerant can to add Freon. Always ensure the engine is running and the AC is set to the maximum cool setting while adding refrigerant.
You don't add Freon as it has R134a not Freon. You add it to the low pressure side which is the larger hose.
Take it to the a auot shop. you can not add freon
Contains no Freon. Freon was banned beginning in 1996.
To add freon gas to a Pontiac Solstice, first ensure the engine is off and the AC system is off. Locate the low-pressure service port, usually found on the larger diameter line between the AC compressor and the evaporator. Connect a refrigerant recharge kit to the port, following the manufacturer's instructions, and add the freon until the pressure gauge indicates the correct level. Always check for leaks and ensure proper ventilation when handling refrigerants.
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Freon is no longer sold and available for use in vehicles, as it is extremely toxic and bad for the ozone layer. However, if you buy the currently available and used refrigerant for your car, you open the A/C valve and put it in there.
Freon (R-12) is way too expensive as it is no longer in production. Have it converted to use R-134a. I suggest a visit to a professional A/C shop as the fact that you need to add refrigerant indicates you have a leak that needs repairing. It is illegal to add refrigerant to a system with a leak without first repairing the leak.
just wanted to let you know that there is only the i set of ports their is no second to the rear its all the same unit.
where do I add freon to my air conditioning unit on a 1997 chevy truck?