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Recharge Air Conditioning with Freon in a Nissan Maxima

Recharge Air Conditioning with Freon in a Nissan Maxima - Inspect your air conditioning lines for damage. You must fix any damaged lines or components before you recharge the system. It is illegal to discharge refrigerant into the air. This includes knowingly recharging a system you know has a leak.Follow the larger line coming out of the compressor until you reach a service port with a black cap marked L. Remove the cap. This is the Low Pressure Side service port. 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. If this is the case, you must have your Nissan Maxima 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 be turned on the coldest setting with maximum blowing power.

Connect the refill hose to the connector on the Low Pressure Side of the air conditioning system. The Low Pressure Side connector is smaller than the High Pressure Side connector. Because the connectors are different sizes, the refill kit hose should fit only on the Low Pressure Side port. Additionally, the High Pressure Side connector will usually have a red cap or be marked with an H or the word High.

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.

When your Nissan Maxima has warm air blowing out of the air conditioning system, as long as all of the components are working properly, it is possible that recharging the system will correct the problem. Keep in mind that some models made in or before 1995 may still use R12 refrigerant. In this case, a professional must retrofit the system to accept R134 before you can recharge it. - by eHow

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