Engine Controls - Trouble Shooting - No Codes

• Introduction
• Preliminary Inspection
• Symptoms (Gasoline)
  • Notes
  • Symptom Diagnosis
  • Detonation/Spark Knock
    • Symptom Definition
    • Possible Causes & Corrections
  • Engine Backfires
    • Symptom Definition
    • Possible Causes & Corrections
  • Engine Cuts Out, Misses
    • Symptom Definition
    • Possible Causes & Corrections
  • Engine Dieseling/Run-On
    • Symptom Definition
    • Possible Causes & Corrections
  • Hard Start
    • Symptom Definition
    • Possible Causes & Corrections
  • Hesitation, Sag Or Stumble
    • Symptom Definition
    • Possible Causes & Corrections
  • Lack Of Power Or Sluggish
    • Symptom Definition
    • Possible Causes & Corrections
  • Poor Fuel Economy
    • Symptom Definition
    • Possible Causes & Corrections
  • Poor Fuel Fill Quality
    • Symptom Definition
    • Possible Cause & Correction
    • Cause & Correction
  • Rough, Unstable Or Incorrect Idle And Stalling
    • Symptom Definition
    • Possible Causes & Corrections
  • Vehicle Surges Or CHUGGLES
    • Symptom Definition
    • Possible Causes & Corrections
• Symptoms (Diesel)
  • Notes
  • Symptom Diagnosis
  • Cuts Out &/Or Misses
    • Symptom Definition
    • Possible Causes & Corrections
  • Excessive Smoke
    • Symptom Definition
    • Possible Causes & Corrections
  • Fuel Knock/Combustion Noise
    • Symptom Definition
    • Possible Causes & Corrections
  • Fuel Leaks Or Fuel Smell
  • Hard Start
    • Symptom Definition
    • Possible Causes & Corrections
  • Hesitation, Sag &/Or Stumble
    • Symptom Definition
    • Possible Causes & Corrections
  • Lack Of Power, Sluggishness Or Sponginess
    • Symptom Definition
    • Possible Causes & Corrections
  • Poor Fuel Economy
    • Symptom Definition
    • Possible Causes & Corrections
  • Rough, Unstable, Or Incorrect Idle & Stalling
    • Symptom Definition
    • Possible Causes & Corrections
  • Surge &/Or CHUGGLE
    • Symptom Definition
    • Possible Causes & Corrections
• Turbocharger Trouble Shooting
  • Symptoms
  • Probable Causes
• INTERMITTENTS
  • Notes
  • Preliminary
  • Harness Or Connector INTERMITTENTS
  • Electrical Connections Or Wiring
  • Control Module Power & Grounds, & Component Power & Grounds
  • Temperature Sensitivity
  • Electromagnetic Interference (EMI) & Electrical Noise
  • Incorrect Pcm Programming
  • Duplicating Failure Conditions
  • Scan Tool Snapshot
  • Vehicle Data Recorder