
Page 52
Idle RPM Limit
OEM
FORMERLY - PTO/EXTENDED IDLE ENGINE RPM LIMIT OR
PTO MODE ENGINE RPM LIMIT
Description:
Idle RPM Limit is the maximum engine rpm in the idle
mode. Idle mode occurs if the engine rpm is set using the
cruise control On/Off switch and the Set/Resume switch.
The actual upper limit of this parameter is determined
by the programmed Top Engine Limit. The lower limit is
determined by the programmed Low Idle Engine rpm.
Available:
All electronically controlled on-highway engines
covered in this handbook
Range:
Engine
Range
Cat
Default
Minimum Maximum
3126E, C7,
C9
700 RPM TEL RPM TEL RPM
C-10, C-12,
C-15, C-16,
C11, C13,
C15
600 RPM TEL RPM TEL RPM
Advantages:
Being able to electronically control engine rpm offers
more precise control than a hand throttle. The ability to
limit maximum engine rpm in the Idle mode saves fuel
and prevents unnecessary engine wear.
Disadvantages:
None
Recommendations:
✔ For non-PTO operations where overnight idling is
the primary usage of this feature, set the Idle/PTO
RPM Limit between 900 and 1100 rpm based on
climatic conditions.
Idle Parameters