Exhaust Gas RECIRCULATION (EGR) System

• Description
• Operation
  • Ported EGR System
  • Back Pressure EGR System
    • Notes
    • Positive Back Pressure EGR Valve
    • Negative Transducer Back Pressure EGR Valve
  • EGR Thermal Control Valve
  • EGR Thermal Vacuum Switch
• Trouble Shooting
  • Rough Idle And Stalling
  • Runs Rough On Light Throttle Poor Part-Throttle Performance
  • Engine Stalls On Deceleration
  • Part Throttle Detonation
  • Engine Starts And Immediately Stalls When Cold
• Testing
  • Functional Tests
    • EGR Valve Installed (Exc. Ported and Negative Back Pressure Types)
    • EGR Valve Installed (Ported and Negative Back Pressure Types)
    • EGR Valve Removed (Back Pressure Type Valve Only)
• Maintenance
  • EGR Valve Cleaning
  • EGR Passage Cleaning