Dodge 2004 Freightliner Automobile User Manual


 
5
transmission are negatively affected by this mode of
operation.
The delayed upshift is effective with vehicle speeds
below 31 mph (50 km/h) at partial throttle and engine
temperatures below 95
F (+35 C).
To avoid overrevving the engine when the selector
lever is moved to a lower gear, the transmission will
not shift to a lower gear if the engine’s revolutions per
minute limit would be exceeded. In this case there will
be no downshift, even when the vehicle speed reaches
the engine’s rpm limit of that gear, for example by
applying the service brakes.
To prevent the engine from laboring at low rpm when
driving uphill grades or with your vehicle heavily
loaded, the automatic transmission will downshift
when necessary to maintain engine rpm within the best
torque range.
Gear
q Upshift through 4th gear only. Suitable for
performance driving.
p Upshift through 3rd gear only. Suitable for
moderately steep hills. Since the transmission
does not shift higher than 3rd gear, this gear
selection will allow use of the engine’s braking
power downhill.
o Upshift through 2nd gear only. For driving in
mountainous regions or under extreme
operating conditions. This gear selection will
allow use of the engine’s braking power when
descending steep grades.
n Use this position, which makes maximum use of
the engine’s braking effect, while descending
very steep or lengthy downgrades and only at
speeds below 25 mph (38 km/h).