Hello, I am facing an issue with my Chevrolet AVEO, when I start the car the RPM goes beyond 3000+(btw 3200-3400) and stays there forever and doesn't come down. When I switch on the A/C the RPM slightly comes down to 2900-3000 level but doesn't come down further. I got the Throttle body replaced from the Chevrolet Service Center but no change. Pls advise and help. Thanks