GM > Engine Diagnostics > Misfire

Misfire Detection Temps

• Max Temp: The maximum engine coolant temperature to which Misfire Detection tests will run
• Min Temp: The minimum engine coolant temperature to which Misfire Detection tests will run

Misfire Max Time Between Events:

• Idle: Increase these values to max misfire tests less sensitive.
• Low RPM: Increase these values to max misfire tests less sensitive.
• Med RPM: Increase these values to max misfire tests less sensitive.
• High RPM: Increase these values to max misfire tests less sensitive.

Misfire Max Time Between Events By Cylinder vs. VE% vs. RPM

• Idle (Not Moving): Increase these values to max misfire tests less sensitive.
• Idle (Moving): Increase these values to max misfire tests less sensitive.
• Med RPM: Increase these values to max misfire tests less sensitive.
• High RPM: Increase these values to max misfire tests less sensitive.