Poor Fuel Mileage
- Check fuel injection system.
- Check intake air temperature sensor.
- Check coolant temperature sensor.
- Check barometric pressure sensor.
- Check ignition switch.
- Check idle position switch.
- Check throttle position sensor.
- Check camshaft angle sensor and crankshaft angle sensor.
- Check power steering pressure switch.
- Check A/C switch.
- Check P/N switch (A/T models).
- Check motor position sensor (1.8L).
- Check airflow sensor.
- Check oxygen sensor.
- Check stepper motor (2.0L).
- Check fuel injectors.
- Check power transistor.
- Check fuel pressure.