How do I solve AC issues in a 1993 Chevrolet K5 Blazer?

Question

It works when I crank the car and drive for about ten to fifteen minutes, but then it stops blowing cool air for about twenty minutes. I have recharged the Freon and checked my air cleaner/filter. My guess is a leak in Freon or the compressor.

Answer 1

really so many things that  can be wrong with one is always best to have it tested to know  or you can spend a lot of money trying to guess and stil not find it

Answer 2

it could be overcharged or still undercharged