It depends on what year, single or dual ac. Suggest you check under hood label.
R134a
R134a
Well, if the unit was originally meant to be recharged with the old freon, a kit is needed to allow recharge with the new.
Connect the Freon recharge hoses to the ports on the air conditioner compressor. With the hoses connected release the Freon into the compressor.
R134a
R134aR134a
Freon is the trade name for R12. Your car contains R134 or R134a which is not Freon.
The amount of freon needed to recharge the air conditioning system in a 1999 Mercury Cougar can vary based on the system capacity and any existing leaks. It is best to consult a certified mechanic who can determine the correct amount needed for your specific vehicle.
You will need to connect your Freon bottle to the low pressure port on your 2002 Chevy Cavalier air conditioning compressor. Release the Freon into the compressor. A Freon recharge kit will come with everything you need and instructions.
Purchase a Freon recharge kit. Connects the Freon hoses to the ports on the air conditioner compressor. Release the Freon into the compressor.
The amount of Freon you will need to recharge your air conditioning system is dependent upon how low the Freon level is. You should begin with a one pound bottle of Freon.
R134a