Rough Idle

SYMPTOM
Rough Idle

Check:
1. Electronic Control Unit (ECU) (BU)
2. Electronic Air Control Valve (EACV) (14)
3. Manifold Absolute Pressure Sensor (MAP) (3)(5)
4. Oxygen Sensor (1)(2)
5. Throttle Angle Sensor
6. Intake Air Temperature Sensor (TA) (10)
7. Atmospheric Pressure Sensor (PA) (13)
8. Fuel Injectors (16)
9. Exhaust Gas Recirculation (EGR) (12)
10. Other Emission Controls

NOTE:
Numbers in parentheses are the blink codes displayed on the back of the ECU.
* LED on the ECU is not on, or stays on without blinking.