A/C Problems
 

My air conditioner only stays on for about 30 seconds and turns off. It blows cool air but it wont stay on. This happens only in the morning when I first start my car. A new compressor was just put on it last year so I cant think of what would be causing this. I have a 2002 STS. Any ideas? I dont want to be shocked with the cost when I take it in.