Description:
The programmable Low Idle Engine RPM feature sets the minimum engine speed according to driver preferences.
Available:
All electronically controlled on-highway engines covered in this handbook
Range:
Advantages:
The ability to specify the low idle rpm can be very helpful if a different low idle rpm is needed, either to suit unique operating conditions or if there is resonant vibration at a specific rpm ( mirrors, rattles, etc. ). Lower idle rpm in conjunction with the proper load starting technique (“no throttle” starts) also reduces clutch wear.
Disadvantages:
Idling at higher speed increases fuel consumption and engine wear. Every effort should be made to stay as low as possible.
Recommendations:
This adjustment is rarely required and should be done on a case by case basis.