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How to Replace Refrigerant in a 98 Jeep Cherokee

by Eric Grosso

Recharging an air conditioning system on a 1998 Jeep Grand Cherokee is an easy task that can save an owner a repair bill from a professional mechanic or authorized service center. Charging the system can be done by most novice mechanics, as most auto part stores sell everything needed to recharge the air conditioning system in your own garage. However, safety goggles must be used when working on the pressurized air conditioning system.

Step 1

Locate the low-pressure port on an air conditioning line near the coolant reservoir bottle, and remove the cap covering it.

Step 2

Attach the end of the air recharge hose to the low-pressure port.

Step 3

Attach the can of refrigerant to the valve-end of the hose. Turn the valve handle to pierce the can of refrigerant, then turn the handle in the opposite direction to open it.

Step 4

Run the Grand Cherokee to normal operating temperature and turn on the air conditioning to the maximum setting.

Step 5

Swirl the can of refrigerant to move it from the can to the line. More than one can of refrigerant can be added, but do not add more than two 12 oz. cans.

Step 6

Place a thermometer inside the center air duct. A correctly operating system should have a temperature of 30 to 50 degrees cooler than the ambient air temperature.

Turn the valve handle on the hose to the closed position to seal the can of refrigerant, if needed. Remove the end of the hose from the low-pressure port and replace the cap.

Items you will need

  • Thermometer
  • Air conditioning recharge hose
  • 12 oz. can of 134a refrigerant
  • Safety goggles

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