Engine Controls - 3.8L - Troubleshooting & Diagnosis

• Symptoms - Engine Controls
  • Important Preliminary Inspections Before Starting
  • Visual/Physical Inspection
• 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
  • Test Description
• Malfunction Indicator Lamp (MIL) Always On
  • Circuit Description
  • Test Description
• Engine Cranks but Does Not Run
  • Circuit Description
• Powertrain Relay Diagnosis
  • Circuit Description
• Fuel Pump Electrical Circuit Diagnosis
  • Circuit Description
  • Diagnostic Aids
  • Test Description
• Fuel System Diagnosis
  • Circuit Description
  • Test Description
• Fuel Injector Coil Test
  • Circuit Description
  • Diagnostic Aids
  • Test Description
• Fuel Injector Balance Test with Special Tool
  • Notes
  • System Description
    • Notes
    • Test Description
• Fuel Injector Balance Test with Tech 2
  • Circuit Description
    • Notes
    • Test Description
• Fuel Tank Leak Test
  • Description
  • Diagnostic Aids
  • Test Description
• Alcohol/Contaminants-in-Fuel Diagnosis (With Special Tool)
  • Test Description
  • Test Procedure
• Manifold Absolute Pressure (MAP) Sensor Diagnosis
  • Circuit Description
  • Diagnostic Aids
  • Test Description
• Boost Control System Diagnosis
  • Circuit Description
• Electronic Ignition (EI) System Diagnosis
  • Circuit Description
• Crankshaft Position Sensor (CKP) System Diagnosis
  • Circuit Description
• Inspection/Maintenance (I/M) System Check
  • Description
  • Conditions for Running
  • Diagnostic Aids
  • Test Description
• Inspection/Maintenance (I/M) Complete System Set Procedure
  • Description
  • Conditions for Running
  • Diagnostic Aids
  • Test Description
• Inspection/Maintenance (I/M) System DTC Table
• Inspection/Maintenance (I/M) AIR System Set Procedure
  • Description
  • Conditions for Running
  • Diagnostic Aids
• Inspection/Maintenance (I/M) Catalyst System Set Procedure
  • Description
  • Conditions for Running
  • Diagnostic Aids
    • Notes
    • Test Description
• Inspection/Maintenance (I/M) Exhaust Gas Recirculation (EGR) 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
    • Notes
    • Test Description
• 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
• Service Bay Test
  • Description
  • Conditions for Running the Test
  • Test Procedure