Auxiliary Air Valve (Idle Speed): Technical Service Bulletins

• Customer Interest
  • Engine Controls - Hard Start At High Altitude/Cold Temps
    • Overview
    • Service Procedure
      • Check For Other Hard-Start Causes
      • Start Engine - Check Base Idle Speed and Ignition Timing
      • Replace the ECM and the AAC Valve
• All Technical Service Bulletins
  • Engine Controls - Hard Start At High Altitude/Cold Temps
    • Overview
    • Service Procedure
      • Check For Other Hard-Start Causes
      • Start Engine - Check Base Idle Speed and Ignition Timing
      • Replace the ECM and the AAC Valve