Poor Driveability & High Fuel Consumption

1. Defective ECU.
2. Open or shorted fuel injector circuit.
3. Stuck fuel injector.
4. Defective fuel pump main relay.
5. Poor fuel pump grounding.
6. Incorrect fuel line pressure.
7. Clogged fuel filter.
8. Stuck air bypass valve in fast idle mechanism.
9. Open or shorted crank angle sensor circuit.
10. Defective crank angle sensor.
11. Open or shorted manifold air pressure sensor circuit.
12. Broken or disconnected manifold air pressure sensor hose.
13. Defective manifold air pressure sensor.
14. Open or shorted oxygen sensor circuit.
15. Defective oxygen sensor.
16. Open or shorted coolant temperature sensor circuit.
17. Defective coolant temperature sensor.
18. Open or shorted throttle angle sensor circuit.
19. Defective throttle angle sensor.
20. Open or shorted intake air temperature sensor circuit.
21. Defective intake air temperature sensor.
22. Open or shorted idle mixture adjuster sensor circuit.
23. Stuck open idle control system solenoid valve.