How to Recharge the A/C on a 1997 Nissan Maximaby Eric Grosso
Recharging an A/C system is a easy and quick way to avoid a trip to an authorized service center. On a 1997 Nissan Maxima, the charge port is easily accessible, enabling the system to be charged with a recharge hose and cans of R-134a refrigerant, available at most auto part stores. The systems must always use R-134a refrigerant and never R-12 refrigerant. Always use protective eye wear when working in or near vehicle cooling system lines.
Locate the low side port of the air conditioning system. It is near the passenger side strut tower on one of the refrigerant lines. The port is covered by a cap marked "L."
Turn on the air conditioning to the maximum setting.
Screw the hose end of the recharge hose onto the low side port.
Place the tap end of the valve onto the top of the refrigerant can. Turn the valve clockwise to pierce the top of the can. Release the valve by turning counterclockwise and refrigerant will run from the can into the system. Keep the can upright, shaking it occasionally.
Place the thermometer in the center air conditioning vent inside the vehicle. The temperature of a correctly functioning air conditioning is approximately 30 to 40 degrees Fahrenheit. If the temperature is still above this level, add another 12-ounce can of refrigerant. Never add more than two cans of 12-ounce refrigerant.
Turn the valve on the hose clockwise to seal off the can of refrigerant when finished. Unscrew the other end of the hose from the low end port. Replace the cap on the low end port.