Rough/Unstable Idle or Stalls

1. Malfunctioning MPI system.
2. Malfunctioning intake air temperature sensor.
3. Malfunctioning coolant temperature sensor.
4. Malfunctioning barometric pressure sensor.
5. Malfunctioning ignition switch.
6. Malfunctioning idle position switch.
7. Malfunctioning throttle position sensor.
8. Malfunctioning crank angle sensor.
9. Malfunctioning power steering oil pressure switch.
10. Malfunctioning A/C switch.
11. On models with automatic transaxle, malfunctioning inhibitor (neutral safety) switch.
12. On models with 4-89.6/1.5L engine, malfunctioning motor position sensor.
13. On all models, malfunctioning air flow sensor.
14. Malfunctioning oxygen sensor.
15. On 4-97.4/1.6L engine, malfunctioning [1][2]stepper motor.
16. On all models, malfunctioning injector.
17. Malfunctioning vehicle speed reed switch.
18. Improper fuel pressure.
19. Disconnected or damaged vacuum hose.
20. Malfunctioning ECU.
21. Broken, shorted or improperly secured harness connector.