Misfire or Rough Running

SYMPTOM: Misfire Or Rough Running

CHECK
1. Electronic Control Module (**)
2. Fuel Injector (16)
3. Manifold Absolute Pressure Sensor (3) (5)
4. Idle Air Control (IAC) Valve (14)
5. EGR Control System (12)
6. Fuel Supply
7. Crank/Cyl Position Sensor (4) (54) (9) (59)



Numbers in parentheses are the blink codes displayed at the MALFUNCTION INDICATOR LAMP. (**) MALFUNCTION INDICATOR LAMP stays on without blinking. Notes on Reading Diagnostic List For ECM trouble code component testing procedures see COMPUTERS AND CONTROL SYSTEMS.