Engine Controls - Service & Adjustment Specifications

• Introduction
• Capacities
  • Fluid Capacities (CHEROKEE)
  • Fluid Capacities (Grand CHEROKEE)
  • Fluid Capacities (Wrangler)
• Quick-Service
  • Service Intervals & Specifications
    • Replacement Intervals (CHEROKEE)
    • Replacement Intervals (Grand CHEROKEE)
    • Replacement Intervals (Wrangler)
    • Drive Belt Adjustment
• Mechanical Checks
  • Engine Compression
  • Valve Clearance
• Ignition System
  • Ignition Coil
  • High Tension Wire Resistance
  • Spark Plugs
  • Firing Order
    • Notes
    • Firing Order (2.5L)
    • Firing Order (4.0L)
    • Firing Order (4.7L)
  • Ignition Timing
• Fuel Systems
  • Fuel Pump
  • Injector Resistance
  • Idle Speed & Mixture
  • Throttle Body Minimum Airflow Idle Speed
  • Throttle Position (TP) Sensor