If your air conditioner blows air but it's not cold air then you probably need freon in your air conditioner
No
You need a special machine to drain the freon out of the lines to service.
Answering "Where do you add freon to your air conditioner in your ford ranger?"
$100
29 dollars for refill
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Yes you can if you have the tool, knowledge, and of course the freon. Youtube has instructional videos to help you.
Actually no technical skills needed to check the Freon level. Home central air conditioners have a Freon scale on it. One just need to read the scale and determine whether the level of Freon is sufficient.
Everything takes a different form of Freon. Drain the system if it has not been so prior then add R134a Freon into the coolant system.
you use freon to cool your car and make the air conditioner work
The air conditioner does not have a drain. I dont think an air conditioner has a drain