Guys I need your input please. I have a 97 TT six speed (motor is totally stock) and intermittently the idle drops down to 200-500rpms @ idle. This sometimes happens when I get off the free way and the rpms will drop so low that the car dies. I have cleaned the throttle body and it seemed to help. The problem came back so I thought it was the air idle control valve. I have replaced the valve and the problem still has not gone away. I am fresh out of ideas.