(from previous thread to quote VX Extreme)

Since I have a S/C on my engine and the throttle body is mounted upside down on the S/C'd engines, the idle control valve should be on the upper left hand side of the throttle body on a stock engine. This would be when you are looking at the engine with the hood open looking toward the windshield. It is a dark gray/black domed sensor that has an electrical plug going into it. It has 2 screws (I believe they were torx screws) holding it into the throttle body. I would recommend that you remove the throttle body and clean it and not just the idle control valve. The port that the idle control valve closes against was pretty dirt with oil buildup on mine as was the idle control valve itself. I don't think that you can clean that port well without removing the throttle body. You want to also clean around the ports where the butterfly valve in the throttle body closes. I would recommend removing the throttle body. It only take about 30 - 45 minutes to remove, clean and reinstall.