Stepper Motor - Idle Speed Controller - Mitsubishi Lancer GSR 1.8 4WD Turbo CD5A If your idle speed is going haywire, up and down and very erratic then this could well be the culprit. This new type Black Stepper Motor replaces the old style one HERE This part is Special Order (Approx 10-14 Days to obtain) Mitsubishi Part Number MD628052 MD614367 E9T15293C