Requires instruments and knowledge of the refrigeration cycle. Casual observation of a system, won't allow you to properly determine if it's overcharged.
If your air conditioner blows air but it's not cold air then you probably need freon in your air conditioner
Answering "Where do you add freon to your air conditioner in your ford ranger?"
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$100
29 dollars for refill
you use freon to cool your car and make the air conditioner work
Is it feasible and approximately how much will it cost to replace the air conditioner in my '91 Miata with a unit that does not use freon?
you need 8.00 oz. of oil and 2.25 lbs of freon
FREON
it simply means you have to add freon to ur air conditioner....you can buy freon at any auto parts store.
depemds on the car as how much freon it will hold. some cars have a tag saying how much freon the car is filled with. Too much freon is just as bad as not enough freon.
The refrigerant (freon) in any air conditioner should last the life of the unit. If not, you have a leak.