My compressor is working fine. During the day when it is hot, I turn my A/C on and it blows cold for about two seconds, then blows hot air. Well after extensive research, I decided it was the Evaporator Temperature Discharge Sensor. I changed that part out and it still does the same thing. Today, I tried something. With the car running and the A/C on, I turned the temperature dial all the way to hot, then I slowly turned it to cold, one click at a time. My A/C started blowing cold air. Twenty-five minutes later while driving down the road, it starting blowing hot air again, so I did the same thing and my air was cold again. Any suggestions? I don't have the money to take it to a dealer. Has anyone had this same issue? Is it the A/C blend door actuator. Thanks for the help.