How to Add Freon to a 1994 Plymouth Voyager

Don’t suffer during the heat of the summer and don’t pay a mechanic hundreds of dollars to put Freon in your system when your vehicle’s air conditioning isn’t blowing as cool as it should if your vehicle takes R-134a refrigerant add it yourself (this is known as charging an A/C system).

Difficulty: Moderately Challenging

Instructions

Things You'll Need:

• A vehicle that uses R-134a Refrigerant (Freon)
• 1 can of R-134a Refrigerant
• AC gauge

How to add R-134a Refrigerant (Freon)

1. 
    
   Low-pressure port of A/C system with black cap

   Find low-pressure port of the air conditioning system. The system is usually capped with a blue or black dust cap and is located on the larger diameter tubing between the evaporator and the compressor. Remove the cap.

2. 
    
   Air conditioning set at highest level

   Start the engine in the vehicle and turn the air conditioning on to its highest setting.

3. 
    
   Attach the end of the line from the can to the port

   Take the end of the line from the can and attach it to your low-side port by pulling back the coupler sleeve and pushing the end onto the port. Let go of the sleeve to lock it onto the port.

4. Shake the can well press the button firmly all the way down. Shake the can constantly, releasing the button frequently to check the pressure.

Tips & Warnings

• When the gauge reads:
• 0 – 25 PSI: Add refrigerant (Freon).
• 25 – 45 PSI: System does not need refrigerant (Freon).
• 45 – 65 PSI: Seek professional help and do not add refrigerant (Freon).
• 65 – 200 PSI: The air conditioning system in your vehicle has a problem other than low refrigerant. Seek professional help and do not add refrigerant (Freon).
• Do not overcharge
• Do not crank vehicle in a closed garage

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