Idle Speed Adjustment

Run engine until warm. Mount tachometer sensor (US 1324) on valve cover and connect to battery. Attach tachometer to sensor and check idle speed. If adjustment is needed, loosen lock nut on idle screw. Turn in to increase idle, out to decrease. Apply thread sealer and tighten lock nut.

Fig 1: Idle and Maximum Speed Adjustment

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.