Recharge Air Conditioning with Freon in a Pontiac Grand Am - Test the air conditioning system for leaks. If your Grand Am is R134 compatible, you can use a leak detection kit from your local automotive store. Some of these kits will seal small leaks. Keep in mind that if the air conditioner is leaking, you must fix the leaks before recharging the system. It is illegal to discharge any refrigerant into the air. This includes recharging an air conditioning system you know is leaking refrigerant.Look for the Low Pressure Side service port. This is near the firewall on most Grand Am cars. It has a blue or black cap marked L. Take this cap off and set it aside. Look at the connector to determine if your car uses R134 or R12 refrigerant. You will notice screw type connectors on the both the High Pressure Side and Low Pressure Side lines in models using R12 refrigerant. The R134 compatible systems have a quick connect valve on the Low Pressure Side. Models made in or before 1995 may use the old R12 refrigerant. If this is the case, you must have your Grand Am"s air conditioning system retrofitted to use R134 refrigerant.Check your air conditioning system pressure using an automotive air conditioning pressure gauge. Keep in mind that in order to get an accurate reading, the air conditioner has to be turned on the coldest setting with maximum blowing power.Attach the refill hose to the connector on the Low Pressure Side of the air conditioning system. Make sure that it is securely attached.Allow the air conditioner to suck the refrigerant out of the can by slowly turning the valve on the refill kit hose. Pay attention to the way you hold the can. Most kits will have you hold the can upright when you recharge the air conditioning system. It may take as long as 10 minutes to empty a single can.An air conditioner that is blowing warm air is frustrating. If all of the components are working properly in your Grand Am, you may need to recharge your system with refrigerant. Recharging the air conditioner yourself in your Grand Am is possible if your car is R134 compatible.

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