Rough/Unstable Idle or Stalls

1. Malfunctioning ECI system.
2. Malfunctioning idle switch.
3. Malfunctioning injector.
4. Disconnected or damaged vacuum hose.
5. Malfunctioning throttle position sensor.
6. Malfunctioning pressure sensor.
7. Malfunctioning ECU.
8. Malfunctioning temperature sensor.
9. Malfunctioning ISC servo.
10. Improper fuel pressure.
11. Broken, shorted or improperly secured harness connector.
12. Stuck EGR control valve.
13. Malfunctioning engine coolant temperature sensor.
14. Malfunctioning air flow sensor.
15. Open EGR control valve.
16. Open pressure exchange solenoid valve.