Operation CHARM: Car repair manuals for everyone.

Hunting-Rough Idle

HUNTING-ROUGH IDLE

Check In Order Shown:

Warm Engine
1. Intake air temperature sensor.
2. Engine coolant temperature sensor.
3. Barometric pressure sensor.
4. Closed throttle position switch.
5. Evaporative emission purge solenoid.
6. Heated oxygen sensor.
7. Injectors.
8. Idle speed control motor.
9. Fuel pressure.

Cold Engine
1. Engine coolant temperature sensor.
2. Closed throttle position switch.
3. Injectors.
4. Idle speed control motor.
5. Fuel pressure.