2003 Mitsubishi Lancer Evolution Q&A

2003 Mitsubishi Lancer Evolution Question: Why does the car almost stall out during idle after warming up?

I hear 03s have issues with vacuum lines, might that be the cause? -
Answer 1
scan codes and post so we can adv -
Answer 2
THE THROTTLE BODY COULD BE COKED UP WITH SOOT. A GENTLE CLEANING AND VERIFICATION OF BASE IDLE SPEED ADJUSTMENT IS WHERE TO START -