Idle Is Rough
- Check idle speed control solenoid.
- Check by-pass air control valve.
- Check throttle position switch.
- Check volume airflow meter.
- Check intake air temperature sensor.
- Check canister purge control solenoid.
- Check engine cooling fan.
- Check headlight switch.
- Check blower control switch.
- Check A/C thermostatic switch.
- Check neutral safety switch (A/T).
- Check neutral gear switch or clutch engage switch (M/T).
- Check exhaust gas oxygen sensor.