Engine Controls - 4.2L - Troubleshooting

• Symptoms - Engine Controls
  • Important Preliminary Checks Before Starting
  • Visual/Physical Check
• Intermittent Conditions
• Hard Start
• Surges/CHUGGLES
• Lack Of Power, Sluggishness Or Sponginess
• Detonation/Spark Knock
• Hesitation, Sag, Stumble
• Cuts Out, Misses
• Poor Fuel Economy
• Poor Fuel Fill Quality
• Rough, Unstable, Or Incorrect Idle And Stalling
• Dieseling, Run-On
• Backfire
• Malfunction Indicator Lamp (Mil) Inoperative
  • Circuit Description
  • Mil Operation
  • Test Description
• Malfunction Indicator Lamp (Mil) Always On
  • Circuit Description
  • Mil Operation
  • Diagnostic Aids
  • Test Description
• Engine Cranks But Does Not Run
  • Description
  • Test Description
• Fuel Pump Electrical Circuit Diagnosis
  • Circuit Description
• Fuel System Diagnosis
  • System Description
• Fuel Injector Coil Test
  • Circuit Description
  • Diagnostic Aids
• Fuel Injector Balance Test With Special Tool
  • System Description
    • Notes
    • Test Description
• Fuel Injector Balance Test With Tech 2
  • System Description
    • Notes
    • Test Description
• Fuel Injector Circuit Diagnosis
  • Circuit Description
  • Diagnostic Aids
• Fuel Tank Leak Test
  • Description
  • Diagnostic Aids
  • Test Description
• Alcohol/Contaminants-In-Fuel Diagnosis (Without Special Tool)
  • Test Description
  • Alcohol In Fuel Testing Procedure
  • Particulate Contaminants In Fuel Testing Procedure
• Alcohol/Contaminants-In-Fuel Diagnosis (With Special Tool)
  • Description
  • Test Procedure
• Electronic Ignition (EI) System Diagnosis
  • Diagnostic Fault Information
  • Circuit/System Description
  • Reference Information
    • Schematic Reference
      • Notes
      • Special Tools Required
  • Circuit/System Verification
  • Circuit/System Testing
  • Component Testing
  • Repair Procedures
• Inspection/Maintenance (I/M) System Check
  • Description
  • Conditions For Updating The I/M System Status
  • Monitored Emission Control Systems
  • Diagnostic Aids
• Inspection/Maintenance (I/M) Complete System Set Procedure
  • Description
  • Conditions For Running
  • Diagnostic Aids
• Inspection/Maintenance (I/M) System DTC Table
• Inspection/Maintenance (I/M) Catalyst System Set Procedure
  • Description
  • Conditions For Running
  • Diagnostic Aids
• Inspection/Maintenance (I/M) Evaporative Emission (EVAP) System Set Procedure
  • Description
  • Conditions For Running
  • Diagnostic Aids
• Inspection/Maintenance (I/M) Heated Oxygen Sensor/Oxygen Sensor (Ho2S/O2S) System Set Procedure
  • Description
  • Conditions For Running
  • Diagnostic Aids
• Inspection/Maintenance (I/M) Heated Oxygen Sensor (Ho2S) Heater System Set Procedure
  • Description
  • Conditions For Running
  • Diagnostic Aids