Engine Controls - Tests W/O Codes

• Introduction
• Symptoms
  • How To Use This Section
    • Use this portion of article only AFTER performing these checks:
  • Hard Start
    • Symptom Definition
  • Stalls After Starting
    • Symptom Definition
  • Hesitation, Sag Or Stumble
    • Symptom Definition
  • Vehicle Surges
    • Symptom Definition
  • Lack Of Power Or Sluggish
    • Symptom Definition
  • Engine Backfires
    • Symptom Definition
  • Cuts Out, Misses
    • Symptom Definition
    • Misfire Isolation
  • Rough, Unstable Or Incorrect Idle
    • Symptom Definition
  • Engine Will Not Idle
    • Symptom Definition
  • Poor Fuel Economy
    • Symptom Definition
  • Engine Dieseling/Run-On
    • Symptom Definition
  • Detonation/Spark Knock
    • Symptom Definition
  • Excessive Exhaust Emission (Odors)
    • Symptom Definition
• INTERMITTENTS
  • Intermittent Problem Diagnosis
  • Test Procedures
    • Intermittent Simulation
  • Intermittent Trouble Shooting
    • Symptom Definition
    • Possible Causes & Corrections