The a/c is acting as if its low on refrigerant (or air in the system - which essentiality is the same thing).
Unfortunately, there are not many things that a servicable on the a/c system by someone who isn't certified to work on a/c systems. So you'll have to take it in to a service center.
However, many a/c shops will offer free system inspection. Find one in your area and have them to diagnose the problem. Please post their findings here for further assistance. Thanks.
Meanwhile, check the a/c belt tension (with the engine off).
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Thursday, July 4th, 2013 AT 7:15 PM