vin FORD BRONCO 1988 Service Manual

175
Driving Your Bronco
*
[DR00350(BEF )03/95]
Procedures for driving your vehicle will vary
depending on which type of transmission your
vehicle has.
*
[DR00550(BEF )04/95]
q
an Electronic 4-speed Automatic Transmission
(E4OD)
*
[DR00575(BEF )03/93]
q
an Electronic 4-speed Automatic Transmission
(4R7OW)
*
[DR00600(B F )03/95]
q
a manual transmission
*
[DR00650(BEF )04/95]
Your vehicle is equipped with an Electronic
Powertrain Control Module that limits engine
and/or vehicle speeds with a cut-out mode to
promote durability.
*
[DR08650(BEF )03/93]
Automatic Transmission
Operation (E4OD and 4R70W)
*
[DR08710(BEF )03/94]
The E4OD and 4R70W transmissions are
electronically controlled four speed automatic
transmissions with overdrive. Transmission
operation is controlled by the Powertrain Control
Module (PCM).
*
[DR08720( ALL)08/94]
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
Speed, Vehicle Speed and Transmission
Temperature are used by the PCM to shift the
transmission into a higher or lower gear when
required for the best performance and fuel
economy. For example, you may notice that the
transmission will upshift to a higher gear more
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176quickly when the vehicle is first driven and has
not reached normal operating temperature.
*
[DR08730( ALL)07/94]
The PCM also controls the transmission's Torque
Converter Clutch to further raise vehicle
performance and fuel economy. The Torque
Converter Clutch will engage when the
transmission operating temperature and other
conditions determined by the PCM have been
met. Engagement of the clutch may be noted as
a decrease in engine speed after an upshift has
completed or when the driver has depressed the
throttle while driving at a steady road speed.
[DR08740( ALL)04/95]
To help in troubleshooting, the PCM continually
performs self-tests on the electronic control
system and if any faults are detected, will store
them in memory. The Transmission Control
Indicator Light (TCIL), which is located on the
gearshift lever, may flash steadily if a
malfunction has been detected. If the TCIL is
flashing, contact your Ford dealer as soon as
possible. If this condition persists, damage to the
transmission could occur.
[DR08745( ALL)04/95]
NOTE: The word ªOFFº located on the end of
the gearshift lever is the transmission
control indicator light (TCIL).
*
[DR08750( ALL)01/95]
Putting Your Vehicle in Gear
*
[DR08800( ALL)03/94]
Your vehicle's gearshift is on the steering
column. The Transmission Control Switch and
indicator light are located on the end of the
gearshift lever. You can put the gearshift in any
of the several positions.
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179 %
*
[DR09400( ALL)01/95]
Driving
%*
[DR09500( ALL)04/95]
When to usej(Overdrive)
*
[DR09600( ALL)04/95]
This is the normal driving position. As the
vehicle picks up speed, automatic upshifts to
second, third and fourth gears will occur when
jOverdrive is chosen on the selector and the
transmission control switch has not been
pressed. The transmission will shift into the
correct gear when the right speed is achieved,
for the accelerator pedal position you have
chosen.
*
[DR09700( ALL)03/94]
When to use Drive
*
[DR09800( ALL)05/95]
You will note that there isn't a drive position on
your gearshift indicator. However, you will find
a Transmission Control Switch and an indicator
light labeled ªOverdriveº located on the end of
the gearshift lever. Press this switch and the
word ªOFFº will illuminate on the shift lever
knob. With the word ªOFFº illuminated, the
transmission will operate in gears one through
three. Operating in the Overdrive ªOFFº mode
gives more engine braking than Overdrive and
is useful for descending hills or when towing.
[DR09850( ALL)04/95]
quarter page art:0020771-C
Transmission Control Switch and indicator light (located
on the gearshift lever)
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181
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[DR10500( ALL)01/95]
P (Park)
*
[DR10600( ALL)03/94]
Always come to a complete stop before you shift
into P (Park). This position locks the
transmission and prevents the rear wheels from
turning. To securely latch the gearshift in the P
(Park) position, pull it toward you, push it
completely counterclockwise against the stop,
and then push it toward the instrument panel.
*
[DR10650( ALL)03/94]
The gearshift is securely latched in P (Park) if
you cannot rotate it in a clockwise direction
without lifting it toward you.
*
[DR10700( ALL)05/95]
RWARNING
Always set the parking brake fully and
make sure that the gearshift is securely
latched in P (Park).
[DR10725(B F )05/95]
When the transfer case is in the N (Neutral)
position, the engine and transmission are
disconnected from the rest of the driveline.
Therefore, the vehicle is free to roll even if the
automatic transmission is in P (Park) or the
manual transmission is in gear.
*
[DR10750(B F )05/95]
RWARNING
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.
*
[DR10800( ALL)05/95]
RWARNING
Never leave your vehicle unattended
while it is running.
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182
*
[DR11100( ALL)06/94]
Forced Downshifts
*
[DR11200( ALL)04/95]
To gain extra acceleration injOverdrive or
Drive (O/D OFF), push the accelerator to the
floor. The transmission will automatically
downshift to the appropriate gear: third, second
or first.
*
[DR11235( ALL)03/94]
Power Braking
*
[DR11275( ALL)03/94]
Increasing the engine speed above idle without
vehicle movement (such as holding the brake) in
a forward or reverse gear causes transmission
stall.
*
[DR11285( ALL)03/94]
NOTE: Continued operation in the stall
condition can result in transmission
overheat, malfunction or fluid
expulsion.
*
[DR11300(B F )03/95]
Driving with a Manual
Transmission
%*
[DR11400(B F )03/95]
Using the Clutch
*
[DR11500(B F )01/95]
Make sure the gearshift lever is in the N
(Neutral) position and your right foot is holding
down the brake pedal. Then press the clutch
pedal to the floor with your left foot. Manual
transmission vehicles have a starter interlock
switch. The starter will not crank until the clutch
pedal is fully depressed. Start the engine and
allow it to idle for a few seconds. Move the
gearshift into 1 (First) or R (Reverse).
*
[DR11600(B F )03/91]
To move the vehicle, release the clutch slowly
and at the same time press down slowly on the
accelerator so that the vehicle accelerates.
*
[DR11700(B F )03/95]
Do not drive with your foot resting on the
clutch pedal and do not use the clutch to hold
your vehicle at a standstill while waiting on a
hill. These actions will seriously reduce clutch
life.
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183
*
[DR11750(B F )03/95]
Driving with your foot resting on the clutch may
cause the vehicle to jerk sharply when pressing
or removing your other foot from the
accelerator.
%*
[DR11800(B F )03/95]
Shifting the Gears
*
[DR11900(B F )02/95]
The gearshift for a manual transmission is
mounted on the floor. The gearshift pattern
consists of seven positions: Neutral, five forward
gears, and Reverse.
*
[DR12000(B F )03/93]
quarter page art:0020134-A
5-Speed Overdrive manual transmission shift pattern
*
[DR12300(B F )03/91]
Backing up
*
[DR12400(B F )03/95]
To shift into R (Reverse):
*
[DR12501(B F )03/91]
1. Push the clutch pedal in all the way to the
floor and hold it. If you do not hold the
clutch pedal in all the way, you may hear a
grinding noise when you shift.
*
[DR12551(B F )03/93]
2. Bring your vehicle to a complete stop.
Failure to do so may cause synchronizer
teeth damage, reducing the useful life of
your transmission.
*
[DR12600(B F )08/94]
3. Put the gearshift in Neutral and wait at least
3 seconds before shifting into R (Reverse) to
prevent a grinding noise. Do not release the
clutch.
*
[DR12700(B F )08/94]
4. Push the gearshift all the way to the right
and pull it back into Reverse.
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184
*
[DR12800(B F )01/95]
With the 5-speed transmission you can engage R
(Reverse) only by moving the gearshift from the
left of 3 (Third) and 4 (Fourth) gears before you
shift into R (Reverse). This is a special lockout
feature that protects you from accidentally
shifting into R when you downshift from 5
(Fifth) gear.
*
[DR12950(B F )02/92]
5. Once R (Reverse) is engaged, slowly release
the clutch pedal from the floor.
*
[DR13000(B F )03/94]
If R (Reverse) is not engaged, continue to push
the clutch pedal in while you put the gearshift
back into Neutral. Then, release the clutch pedal
for a moment and repeat steps 2 through 5.
*
[DR13100(B F )03/91]
Upshifting/downshifting
*
[DR13200(B F )03/91]
Upshift and Downshift at the speeds that are
specified in the charts available for your engine
and transmission.
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187
*
[DR15900(B F )05/95]
RWARNING
Do not park your vehicle in Neutral, it
may move unexpectedly and injure
someone. Use 1 (First) gear and set the
parking brake fully.
[DR15903(B F )05/95]
When the transfer case is in the N (Neutral)
position, the engine and transmission are
disconnected from the rest of the driveline.
Therefore, the vehicle is free to roll even if the
automatic transmission is in P (Park) or the
manual transmission is in gear.
*
[DR15906(B F )05/95]
RWARNING
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.
*
[DR15915( ALL)01/95]
Steering Your Vehicle
%*
[DR15945( ALL)01/95]
Your vehicle comes with power steering. Power
steering uses energy from the engine to help
steer your vehicle.
%*
[DR15950( ALL)04/95]
If the amount of effort needed to steer your
vehicle changes at a constant vehicle speed, have
the power steering system checked. If the power
steering system breaks down (or if the engine is
turned off), you can steer the vehicle manually
but it takes more effort.
*
[DR15960( ALL)01/95]
Never hold the steering wheel to the extreme
right or left for more than five seconds if the
engine is running. This can damage the power
steering pump.
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188
*
[DR15985( ALL)05/90]
NOTE: After any severe impact such as
striking large potholes, sliding into
curbs on icy roads, or a collision
involving the front end, observe the
steering wheel alignment. If the spokes
of the steering wheel seem to be in a
different position while going straight
down the road, have the front
suspension and steering checked for
possible damage.
*
[DR16101(B F )03/95]
Four-Wheel Drive (4WD)
System (If equipped)
*
[DR16130(B F )08/94]
When you select the 4WD mode, your light
truck uses all four wheels to power itself. This
increases traction, enabling you to drive your
4x4 over terrain and road conditions two-wheel
drive vehicles cannot.
*
[DR16160(B F )10/94]
Power is supplied to all four wheels through a
transfer case that allows you to select four-wheel
drive when necessary. Methods for engaging and
disengaging 4WD and low range will depend on
which system your vehicle has.
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189
*
[DR16190(B F )01/95]
4x4 Systems Ð Lever Operated
*
[DR16220(B F )06/94]
The lever operated transfer case can be placed
into four positions. The 2H position is the
two-wheel drive position in which power is
delivered only to the rear axle. The 4H position
provides four-wheel drive with power delivered
to the front and rear axles for increased traction.
The 4L position provides four-wheel drive with
power delivered to the front and rear axles
when the above average power is required at
reduced speeds. In the N (neutral) position, there
is no power delivered to either axle.
[DR16225(B F )05/95]
When the transfer case is in the N (Neutral)
position, the engine and transmission are
disconnected from the rest of the driveline.
Therefore, the vehicle is free to roll even if the
automatic transmission is in P (Park) or the
manual transmission is in gear.
*
[DR16230(B F )05/95]
RWARNING
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.
File:ltdrb.ex
Update:Fri Jun 9 15:26:57 1995
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