Engine Controls - Adjustments

• Engine Mechanical
• Valve Clearance
• Ignition Timing (Gasoline)
  • 4-Cylinder Ignition Timing
    • 2.5L (VIN A)
  • V6 Ignition Timing
    • Except 3.8L - VIN L
  • V8 Ignition Timing
• Injection Pump Timing (Diesel)
  • 6.2L & 6.5L
• Idle Speed & Mixture
  • Idle Speed & Mixture (Gasoline)
    • Notes
    • Controlled Idle Speed Check
    • Minimum Idle Speed Adjustment (7.4L)
  • Idle Speed (Diesel)
    • Curb Idle
    • Fast Idle
• Throttle Position (TP) Sensor
  • Notes
  • 6.2L Diesel Light Duty (VIN C)
  • 6.2L Diesel Heavy Duty (VIN J)
  • 6.5L Turbo Diesel
• WASTEGATE Actuator Adjustment (Turbo)
  • Notes
  • 4.3L PFI (VIN Z)