Answering "Where do you add freon to your air conditioner in your ford ranger?"
You can add freon on the low side service port that is located on the accumulator next to the firewall................
The low pressure port is the same place that you add Freon to your air conditioning system. The low pressure port will have a blue top.
The 2002 ford Ranger uses type R134 Freon. The Freon is added in the low pressure port of the ac system.
Connect a freon gauge and tank to the low side ac port of the 97 DeVille. With the engine running and the ac on high, open the freon valve. Shut the valve when the ac gauge reads full.
To add Freon to a Ford Ranger, first ensure the engine is off and the AC system is not running. Locate the low-pressure service port, usually found on the larger AC line, and connect a refrigerant gauge or can of Freon to it. Start the engine and turn the AC to the maximum setting, then slowly add Freon until the system reaches the desired pressure, monitoring the gauge closely. Remember to wear safety gear and consider consulting a professional if you're unfamiliar with the process.
Using a set of gauges you will put the blue hose on the low side which is the suction side and the red hose on the high side which is the discharge side and using the remaining yellow hose you will attach the can of freon and add the correct amount plus add oil as well....
R-134A
45
You don't add Freon as it has R134a not Freon. You add it to the low pressure side which is the larger hose.
The system will take 30 ounces of R134a freon.............
R134a