Kevin, There is no adjustment for the idle speed. Unless you have a small air leak somewhere around the engine. There are several places the engine can get more air. A lot of time the throttle body butterflies or the air flow meter may not be perfectly aligned and closing correctly. Mine idles at around 950 if the RPM meter is correct. You can adjust the position of how far the peddle goes down to the striker plate, but the micro switch screw would have to readjusted also. John hervey http://www.specialtauto.com/