Rough Idle

Rough Idle

Check:

1. Electronic Air Control Valve (EACV) (14)
2. Fuel Injectors (16)
3. Exhaust Gas Recirculation System (EGR) (12)
4. Manifold Absolute Pressure (MAP) Sensor (3)(5)
5. Electronic Control Unit (ECU) (BU)

NOTE: After each symptom, the system that could be the source of the symptom are listed and should be checked in the order they are listed, beginning with #1.

(BU) code used when the CHECK ENGINE warning light is on, and the self-diagnosis indicator LED is ON with no "blinks", the back-up system is in operation.

Self-diagnosis indicator, (LED) blinks (?), will follow associated systems.