1998 FORD EXPLORER transfer case

Recommended shift speeds
Upshifts when accelerating (for best fuel economy)
Shift from:Transfer case position (if equipped)
AUTO or HIGH LOW
1 - 2 14 km/h (10 mph) 5 km/h (4 mph)
2 - 3 32 km/h (22 mph) 11 km/h (9 mph)
3 -4 50 km/h (33 mph) 19 km/h (13 mph)
4 - 5 (Overdrive) 71 km/h (41 mph) 27 km/h (17 mph)
Upshifts when cruising (recommended for best fuel economy)
Shift from:Transfer case position (if equipped)
AUTO or HIGH LOW
1 -2 16 km/h (10 mph) 6 km/h (4 mph)
2 - 3 26 km/h (19 mph) 10 km/h (8 mph)
3 - 4 43 km/h (28 mph) 16 km/h (12 mph)
4 - 5 (Overdrive) 68 km/h (40 mph) 26 km/h (16 mph)
Maximum downshift speeds
Shift from:Transfer case position (if equipped)
AUTO or HIGH LOW
5 (Overdrive) - 4 88 km/h (55 mph) 34 km/h (22 mph)
4 - 3 72 km/h (45 mph) 34 km/h (18 mph)
3 - 2 56 km/h (35 mph) 21 km/h (14 mph)
2 - 1 32 km/h (20 mph) 11 km/h (8 mph)
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You can shift into R (Reverse) only by moving the gearshift from 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
(Reverse) when you downshift from 5 (Overdrive).
CONTROL-TRAC AUTOMATIC FOUR-WHEEL DRIVE SYSTEM
(IF EQUIPPED)
The 4WD system uses all four wheels to power the vehicle. This
increases traction, enabling you to drive your 4x4 over terrain and road
conditions not normally traveled by two-wheel drive vehicles.
Power is supplied to all four wheels through a transfer case that allows
you to select a four-wheel drive mode best suited for your current
driving conditions.
Positions of the Control-Trac system
The Control-Trac system functions in three modes:
²The 4WD AUTO mode provides
four-wheel drive with full power
delivered to the rear axle, and to
the front axle as required for
increased traction. This is
appropriate for normal on-road
operating conditions, such as dry
road surfaces, wet pavement,
snow and gravel.
²The 4WD HIGH mode provides
four-wheel drive with full power
to both axles. It is only intended
for severe winter or off-road
conditions, such as deep snow
and ice (where no dry or wet
pavement remains uncovered),
and shallow sand.
HIGH
LOW AUTO
HIGH
LOW AUTO
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116

Do not spin the wheels at over 56 km/h (35 mph). The tires may
fail and injure a passenger or bystander.
Sand
When driving over sand, try to keep all four wheels on the most solid
area of the trail. Do not reduce the tire pressures but shift to a lower
gear and drive steadily through the terrain. Apply the accelerator slowly
and avoid spinning the wheels.
Mud and water
If you must drive through high water, drive slowly. Traction or brake
capability may be limited.
When driving through water, determine the depth; avoid water higher
than the bottom of the hubs (if possible) and proceed slowly. If the
ignition system gets wet, the vehicle may stall.
Once through water, always try the brakes. Wet brakes do not stop the
vehicle as effectively as dry brakes. Drying can be improved by moving
your vehicle slowly while applying light pressure on the brake pedal.
After driving through mud, clean off residue stuck to rotating driveshafts
and tires. Excess mud stuck on tires and rotating driveshafts causes an
imbalance that could damage drive components.
If the transmission and transfer case are submerged in water, their fluids
should be checked and changed, if necessary.
Water intrusion into the transmission may damage the
transmission.
If the rear axle is submerged in water, the rear axle lubricant should be
checked and changed, if necessary. The rear axle is filled with a
synthetic lubricant and does not normally require a lubricant change for
the life of the vehicle. Rear axle lubricant quantities should not need to
be checked unless a leak is suspected.
Driving on hilly or sloping terrain
When driving on a hill, avoid driving crosswise or turning on steep
slopes. You could lose traction and slip sideways. Drive straight up,
straight down or avoid the hill completely. Know the conditions on the
other side of a hill before driving over the crest.
When climbing a steep hill, start in a lower gear rather than downshifting
to a lower gear from a higher gear once the ascent has started. This
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120

reduces strain on the engine and the possibility of stalling.
When descending a steep hill, avoid sudden braking. Rapid pumping of
the brake pedal will help slow the vehicle and still maintain steering
control.
When speed control is on and you are driving uphill, your vehicle speed
may drop considerably, especially if you are carrying a heavy load.
If vehicle speed drops more than 16 km/h (10 mph), the speed control
will cancel automatically. Resume speed with accelerator pedal.
If speed control cancels after climbing the hill, reset speed by pressing
and holding the SET ACCEL button (to resume speeds over 50 km/h (30
mph).
Automatic transmissions may shift frequently while driving up steep
grades. Eliminate frequent shifting by shifting out of
(Overdrive) into
D (Drive).
Driving on snow and ice
A 4WD vehicle has advantages over 2WD vehicles in snow and ice but
can skid like any other vehicle.
Avoid sudden applications of power and quick changes of direction on
snow and ice. Apply the accelerator slowly and steadily when starting
from a full stop.
When braking, apply the brakes as you normally would. In order to allow
the anti-lock brake system (ABS) to operate properly, keep steady
pressure on the brake pedal.
Allow more stopping distance and drive slower than usual. Consider
using one of the lower gears.
ALL WHEEL DRIVE (AWD) SYSTEM (IF EQUIPPED)
(5.0L ENGINES ONLY)
Your vehicle is equipped with a full-time All Wheel Drive (AWD) transfer
case. Power is supplied to all four wheels all the time with no need to
shift between two-wheel drive and four-wheel drive.
For the lubricant specification and refill capacity of the AWD transfer
case refer toCapacities and specificationschapter.
Driving
121

Mud and water
If you must drive through high water, drive slowly. Traction or brake
capability may be limited.
When driving through water, determine the depth; avoid water higher
than the bottom of the hubs (if possible) and proceed slowly. If the
ignition system gets wet, the vehicle may stall.
Once through water, always try the brakes. Wet brakes do not stop the
vehicle as effectively as dry brakes. Drying can be improved by moving
your vehicle slowly while applying light pressure on the brake pedal.
After driving through mud, clean off residue stuck to rotating driveshafts
and tires. Excess mud stuck on tires and rotating driveshafts causes an
imbalance that could damage drive components.
If the transmission and transfer case are submerged in water, their fluids
should be checked and changed, if necessary.
Water intrusion into the transmission may damage the
transmission.
If the rear axle is submerged in water, the rear axle lubricant should be
checked and changed, if necessary. The rear axle is filled with a
synthetic lubricant and does not normally require a lubricant change for
the life of the vehicle. Rear axle lubricant quantities should not need to
be checked unless a leak is suspected.
Driving on hilly or sloping terrain
When driving on a hill, avoid driving crosswise or turning on steep
slopes. You could lose traction and slip sideways. Drive straight up,
straight down or avoid the hill completely. Know the conditions on the
other side of a hill before driving over the crest.
When climbing a steep hill, start in a lower gear rather than downshifting
to a lower gear from a higher gear once the ascent has started. This
reduces strain on the engine and the possibility of stalling.
When descending a steep hill, avoid sudden braking. Rapid pumping of
the brake pedal will help slow the vehicle and still maintain steering
control.
When speed control is on and you are driving uphill, your vehicle speed
may drop considerably, especially if you are carrying a heavy load.
If vehicle speed drops more than 16 km/h (10 mph), the speed control
will cancel automatically. Resume speed with accelerator pedal.
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The high-current fuses are coded as follows:
Fuse/Relay
LocationFuse Amp
RatingDescription
1 60A** I/P Fuse Panel
2 40A** Blower Motor Relay
3 50A** 4 Wheel Anti-Lock Brake System (4WABS)
Module
4 30A** Power Windows, Power Moon Roof, Power
Seat
5 50A** Ignition Switch, Starter Relay
6 20A** Transfer Case Relay
7 Ð NOT USED
8 20A** Automatic Ride Control ARC Switch Off/On
Switch
9 40A** Automatic Ride Control Relay
10 30A** PCM Power Relay
1 10A* A/C Relay
5432110 9 8 7 612 11 10 9
876 5
432 1
14 15 13
211
9 6
10 87 5 41
2 3
175
MEGAFUSE
Roadside emergencies
142

Checking and adding transfer case fluid
1. Clean the filler plug.
2. Remove the filler plug and
inspect the fluid level.
3. Add only enough fluid through
the filler opening so that the fluid
level is at the bottom of the
opening.
Use only fluid that meets Ford specifications. Refer to theCapacities
and specificationschapter.

Maintenance and care
174

REFILL CAPACITIES
Fluid Ford Part Name Application Capacity
Engine oil
(including
filter
change)Motorcraft 5W30
Super Premium
Motor OilAll engines
4.7L (5.0
quarts)
Brake fluid Ford High
Performance DOT
3 Brake FluidAll
Fill to line in
reservoir
Power
steering
fluidMotorcraft
MERCONtAT FAll Fill to line on
reservoir or
dipstick
Transmission
fluidMotorcraft
MERCONtAT F5-speed manual
2.6L (5.6 pints)
Motorcraft
MERCONtVATF4R70W Automatic
(5.0L engines
only)13.1L (13.9
quarts)
5R55E Automatic
with 4.0L EFI
engine (4x2)9.0L (9.5
quarts)
5R55E Automatic
with 4.0L SOHC
engine (4x2)9.25L (9.75
quarts)
5R55E Automatic
with 4.0L EFI
engine (4x4)9.3L (9.8
quarts)
5R55E Automatic
with 4.0L SOHC
engine (4x4)9.55L (10.0
quarts)
Transfer
caseMotorcraft
MERCONtAT F4WD 1.4L (1.5
quarts)
AWD 1.25L (1.3
quarts)
Engine
coolantFord Premium
Cooling System
Fluid4.0L engine 7.4L (7.8
quarts)
5.0L engine 12.1L (12.8
quarts)
Capacities and specifications
198