Poor Fuel Economy
1. Abnormal choke valve operation.
2. High engine idle speed.
3. Malfunctioning engine choke.
4. Enrichment valve stuck open.
5. Malfunctioning engine coolant temperature sensor.
6. Malfunctioning oxygen sensor.
7. Malfunctioning timing control system.
8. Malfunctioning feedback solenoid valve.
9. Malfunctioning slow cut solenoid valve.
10. Malfunctioning throttle position sensor.
11. Malfunctioning engine speed sensor.
12. Broken, short circuited or incorrectly connected harness connector.