Items you will need
Recharging the R134a freon levels from a 2005 Jeep Liberty is an easy job. It is one of the simplest automotive air conditioning maintenance tasks. All you need is an air conditioning recharge kit, and they are widely available anywhere automotive products are sold. When shopping for a kit, make sure you don’t buy one with a R12 freon bottle. The R12 is not environmentally friendly and is not compatible with a 2005 Jeep Liberty. Always, when purchasing an R134a refill kit, read and follow the manufacturer’s instructions. While the process is similar, there are slight variations by brand.
Soak a clean towel in very warm water. You may need it later. Also, wear protective goggles. While adding R134a to a Jeep’s A / C system is a relatively simple task, it is still a compressed gas.
Open the packaging of the recharge kit and assemble the kit. The hose, pressure gauge and valve assembly should be screwed into the top of the R134a container. However, do not turn the valve all the way to the bottom. That will launch the R134a too soon.
Open the hood of the 2005 Jeep Liberty and locate the A / C system. Look for aluminum tubes with a high and low side port. Remove the low-side port cover and place the cover in a safe place for later. Place the refill hose snugly and securely in the port on the low side.
Find a safe place inside the engine compartment to put the refill kit. Step 5 requires starting the Jeep Liberty engine, so the kit should go somewhere away from the parts and components that will be moved. Put down the kit.
Get behind the wheel of the 2005 Jeep Liberty. Place the key in the ignition and start the engine. Turn on the A / C system to maximum coolness and blowing capacity. Place a thermometer in an A / C vent and watch the temperature drop. Once the air conditioner has reached its coldest possible temperature, look at the temperature gauge on the dash. The vehicle should be at its normal operating temperature.
Go back to the refill kit and take the thermometer with you. Leave the doors open so the A / C system doesn’t accidentally “shut off”.
Pick up the refill kit you left in the engine compartment. Turn the valve on the top of the R134a container all the way down. The R134a freon will flow out of the container and into the Jeep air conditioning system. If the can gets too cold to hold, you can wrap it in a warm, damp towel.
Turn the valve on the container upward and stop the flow of freon. This will allow you to monitor the indicators on the recharge kit. Wait at least a minute for the new gas charge to work in the A / C system.
Place a thermometer in one of the A / C ducts and monitor the temperature inside the system. Once the outlet temperature has dropped to 40 degrees, the system has reached its normal operating cold. Also, towards the end of the process, all the aluminum tubing will be cold.
Close the valve on the top of the R134a container once refilling is complete or when the can has been used up. Never overload or overfill an A / C system. It is always best to err on the side of not completing the entire system. Remove the recharge hose from the low side port and replace the cover. Close the hood and turn off the 2005 Jeep Liberty engine and A / C system.
Leave the hose, gauge, and valve on top of the R134a container if any refrigerant remains. Do not discharge excess freon. Store can in a dark place away from temperature fluctuations and in an upright position.