Forced Downshifts; Power Braking; Automatic Transmission Operation (E4Od And 4R70W) - Ford Vehicle Owner's Manual

F series
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Do not leave the vehicle unattended with
the transfer case in the N (Neutral)
position. Always set the parking brake
fully and turn off the ignition when
leaving the vehicle.

Forced Downshifts

To gain added acceleration in D (Drive) (when
passing another vehicle) push the accelerator to
the floor. The transmission will downshift to
Second gear at speeds from about 35 to 55 mph
(56 to 88 km/h) or to either First or Second gear
at speeds under 35 mph (56 km/h).

Power Braking

Increasing the engine speed above idle without
vehicle movement (such as holding the brake) in
a forward or reverse gear causes transmission
stall. Continued operation in the stall condition
can result in transmission overheat, malfunction
or fluid expulsion.
Automatic Transmission
Operation (E4OD and 4R70W)
The E4OD and 4R70W transmissions are
electronically controlled four speed automatic
transmissions with overdrive. Transmission
operation is controlled by the Powertrain Control
Module (PCM).
The PCM will automatically adjust transmission
operation to make up for varying conditions.
Several sensors located on the engine and
transmission such as Throttle Position, Engine
RWARNING
173

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