How to Recharge Air Conditioning with Freon in a Plymouth Neon

Recharging the air conditioning system in a Plymouth Neon or Dodge Neon is possible using an automotive R134 refrigerant recharge kit. These are available at auto parts stores in most areas. In some areas, however, you will need a special license to purchase the refrigerant. If this is the case, you need to take your neon to a professional to have the system recharged.

Instructions

1

Look over the air conditioning system lines and components for signs of leaks or damage. There are kits available at most automotive stores that use a special dye to help show you any leaks. Some of these kits may seal small leaks.

2

Locate the Low Pressure Side service port. From the compressor, follow the large black hose. It will connect to a small hard line. You will see a black cap marked L on the small hard line. This is the Low Pressure Side service port.

3

Remove the black cap and set it in a safe place. You will have to put it back on when you are finished recharging the air conditioning system in your Neon. Wipe off the service port with a clean towel.

4

Turn the air conditioner on to Max power at the lowest temperature. Check the pressure using an auto air conditioning pressure gauge. The pressure on the Low Pressure Side should be between 25 and 45 psi. If it is lower than this, you can safely add Freon. If it above 25 psi, you need to have it serviced before you add any refrigerant.

5

Connect the refill kit hose to the Low Pressure Side service port according to the manufacturer's directions. While it is possible to do a direct charge, it is recommended that you use a refill kit that uses either a trigger release, push button release or valve release method.

6

Allow the system to suction the refrigerant out of the can. This may take up to 10 minutes. Check the pressure often. If the can is fully empty and the pressure is still below 25 psi, take your Neon to a mechanic for service.

7

Leave the air conditioner running on Max power and lowest temperature for 15 minutes. This gives the refrigerant time to circulate throughout the entire system.