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How to Charge the AC in a Dodge Caravan

Charging a Dodge Caravans air conditioning unit, called commonly "A/C" or "AC," with new freon is not a hard task to do, and the reward of having your A/C working properly again is plenty of motivation. If your air conditioning unit is not working, a recharge of the A/C systems chemical cooling agent, called rigerant or often freon, may be just what you need. If your Caravan was made before 1995, a professional will have to make other adjustments before you can recharge with rigerant on your own.

Instructions

1

Check your Caravans air conditioning line for air conditioning leaks before attempting to add rigerant. Auto parts stores sell leak-detection kits that you can use to detect leaks while also sealing small ones. Follow manufacturers directions on how to use the leak detection kit you choose. If there is a large leak, do not add rigerant; instead, take your Caravan to a professional.

2

Find the Low Pressure Side service port. It is marked Low and is black in color. Remove it.

3

Turn on the A/C to the coldest, highest settings possible. Use a pressure gauge to make sure there is pressure. If the pressure gauge is not measuring any pressure, then there may be a bigger problem that needs the attention of a professional.

4

Attach the hose to recharge the rigerant on the Low Pressure Side. Open the valve so the rigerant can flow into the system. Keep the can upright. When it is emptied, remove the ill hose and close the cap.

5

Turn on your air for 30 minutes to allow the rigerant to make its way completely through the system. Check the pressure again; it should have increased. If it has not, add more rigerant.