Auto Air Conditioning & Heater Repair: A/C, chev cavalier, vacuum line

Question
I have a 2002 chev cavalier. The A/C blows cool air until I accelerate and then the air gets warmer. As soon as I let off the gas it gets colder again. Any help would be appreciated. Thank You

Answer
Somewhere on the engine or under the dash you have a broken or loose vacuum line.

What mechanical work or ANY kind of work has been performed on the vehicle recently ?. As most problems that occur after a recent repair was made can be traced back to the area of where the repair was made as an electrical and or vacuum line may have been knocked loose. Look around in the area where work was performed..