I hear 03s have issues with vacuum lines, might that be the cause?
Why does the car almost stall out during idle after warming up? on 2003 Mitsubishi Lancer Evolution
scan codes and post so we can adv
1 more answer
THE THROTTLE BODY COULD BE COKED UP WITH SOOT. A GENTLE CLEANING AND VERIFICATION OF BASE IDLE SPEED ADJUSTMENT IS WHERE TO START