FORD EXPEDITION 1998 1.G Owners Manual

recommend the use of gasolines
that meet the AAMA specification
if they are available.
It should not be necessary to add
any aftermarket products to your
fuel tank if you continue to use a
high-quality fuel.
Cleaner air
Ford approves the use of gasolines
to improve air quality, including
reformulated gasolines that contain
oxygenates up to 10% ethanol or
15% MTBE.
Do not use gasolines containing
methanol, which can damage
critical fuel system components.
Damage resulting from the use of
methanol may not be covered by
your warranty.
Filling the fuel tank
1. Turn the engine off. After
opening the fuel door, remove the
cap carefully and slowly by turning
it counterclockwise
1¤4turn until it
stops. Pull to remove the cap. A
tether attaches the cap to the fuel
filler pipe.
2. Make sure that you pump
unleaded fuel and put the fuel
nozzle inside the fuel filler pipe.
²To optimize fill, it may be
necessary to reposition the
nozzle in the filler pipe.
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181

²To help reduce early nozzle shut
off and fuel spillage, park your
vehicle so the fuel filler door is
level.
²Avoid excessively fast fuel
dispensing rates (over 38 L
[10 gallons] per minute).
²If you spill fuel on the body of
your vehicle, clean it off
immediately. The fuel may dull
or soften the paint if it is not
washed off promptly.
²To replace the fuel cap, align
the tabs on the cap with the
notches on the fuel filler pipe.
Turn it clockwise until it stops.
²Push the fuel door closed.
If the check engine warning light
illuminates and remains illuminated
while the engine is started, the
fuel cap may not be properly
seated. Turn off the engine,
remove the fuel cap and replace it,
being sure to align the cap
properly.
If the cap is lost, replace it with an
authorized Motorcraft or equivalent
part.
Calculating fuel economy
To accurately calculate your
vehicle's fuel economy:
1. Fill the tank completely and
record the initial odometer
reading.
2. Each time you fill the tank,
record the amount of fuel added
(in liters or gallons).
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182

3. After at least three to five fuel
tank fill-ups, fill the fuel tank and
record the current mileage
reading.
4. Use one of the following
equations to calculate fuel
economy.
Liters used x 1004Total
kilometers traveled
Total miles traveled4Total
gallons used
Keep a record for at least one
month. This will provide an
accurate estimate of the vehicle's
fuel economy.
EMISSION CONTROL SYSTEM
Your vehicle is equipped with
various emission control
components and a catalytic
converter which will enable your
vehicle to comply with applicable
exhaust emission standards. To
make sure that the catalytic
converter and other emission
control components continue to
work properly:
²Use only unleaded fuel.
²Avoid running out of fuel.
²Do not turn off the ignition
while your vehicle is moving,
especially at high speeds.
²Have the services listed in your
ªService Guideº performed
according to the specified
schedule.
The Scheduled Maintenance
Services listed in the ªService
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183

Guideº are required because they
are considered essential to the life
and performance of your vehicle
and to its emissions system.
If other than Ford, Motorcraft or
Ford authorized parts are used for
maintenance replacements or for
service of components affecting
emission control such non-Ford
parts should be equivalent to
genuine Ford Motor Company
parts in performance and
durability.
Do not park, idle, or drive
your vehicle in dry grass
or other dry ground cover. The
emission system heats up the
engine compartment and exhaust
system, which can start a fire.
Watch for fluid leaks, strange
odors, smoke, loss of oil pressure,
the charging system warning light,
the ªCheck Engineº light or the
temperature warning light. These
events could indicate that the
emission control system is not
working properly.
If you smell exhaust fumes
of any kind inside your
vehicle, have the dealer inspect
and fix your vehicle immediately.
Do not drive if you smell exhaust
fumes. These fumes are harmful
and could kill you.
Do not make any unauthorized
changes to your vehicle or engine.
By law, vehicle owners and anyone
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184

who manufactures, repairs,
services, sells, leases, trades
vehicles, or supervises a fleet of
vehicles are not permitted to
intentionally remove an emission
control device or prevent it from
working. Information about your
vehicle's emission system is on the
Vehicle Emission Control
Information Decal located on or
near the engine. This decal
identifies engine displacement and
gives some tune up specifications.
Please consult your ªWarranty
Guideº for complete emission
warranty information.
Readiness for
inspection/maintenance (I/M)
testing
In some localities, it may be a legal
requirement to pass an I/M test of
the on-board diagnostic (OBD-II)
system. If your ªcheck
engine/service engine soonº light is
on, reference the applicable light
description in theWarning Lights
and Chimessection of your
owners guide. Your vehicle may
not pass the I/M test with the
ªcheck engine/service engine soonº
light on.
If the vehicle's powertrain system
or its battery has just been
serviced, the OBD-II system is
reset to a ªnot ready for I/M testº
condition. To ready the OBD-II
system for I/M testing, a minimum
of 30 minutes of city and highway
driving is necessary as described
below:
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185

²First, at least 10 minutes of
driving on an expressway or
highway.
²Next, at least 20 minutes driving
in stop and go, city type traffic
with at least four idle periods.
Allow the vehicle to sit for at least
eight hours without starting the
engine. Then, start the engine and
complete the above driving cycle.
The engine must warm up to its
normal operating temperature.
Once started, do not turn off the
engine until the above driving
cycle is complete.
EXTERIOR BULBS
Replacing exterior bulbs
Check the operation of the
following lamps frequently:
²headlamps
²foglamps
²high-mount brakelamp
²brakelamps
²parking lamps
²turn signals
²license plate lamp
²tail lamps
²back-up lamps
Do not remove lamp bulbs unless
they can be replaced immediately
with new ones. If a bulb is
removed for an extended period of
time, contaminants may enter the
lamp housings and affect lamp
performance.
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186

Replacing headlamp bulbs
Handle a halogen
headlamp bulb carefully
and keep out of children's reach.
Grasp the bulb only by its plastic
base and do not touch the glass.
The oil from your hand could
cause the bulb to break the next
time the headlamps are
operated.
1. Make sure that the headlamp
control is in the OFF position.
2. Open the hood.
3. At the back of the headlamp,
pull clips rearward and up (about
ôº) to release the headlamp
assembly.
4. Slide headlamp assembly
forward and off of guide ribs to
expose the back of the bulb and
wiring connector.
5. Remove the electrical connector
from the bulb by grasping the wire
and pulling it rearward.
6. Remove bulb retainer ring by
turning it counterclockwise about
1¤4turn, then slide the ring off the
plastic base.
7. Without turning, carefully pull
bulb assembly out of headlamp
assembly.
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187

8. Insert the glass end of the new
bulb into the headlamp assembly
socket. When the grooves in the
plastic base are aligned, push the
bulb into the socket until the
plastic base contacts the rear of
the socket.
9. Slip bulb retaining ring over the
plastic base and lock the ring into
the socket by turning it clockwise
until you feel a ªstop.º
10. Push the electrical connector
into the rear of the plastic base
until it ªsnaps.º
11. Straighten alignment pins,
making them parallel with the
outer edges of the attachment
standoff.
12. Carefully insert the headlamp
assembly into the vehicle making
sure the alignment pins are
inserted into the proper holes and
into the guide ribs.
13. Hold the headlamp assembly
snugly against the vehicle and
push down on the clips to lock the
lamp into position.
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188

Replacing parking lamp/turn
signal bulbs
1. Remove screw from the top of
lamp assembly.
2. Disengage lamp assembly (it has
a snap fit).
3. Remove the electrical connector
from the bulb by grasping the wire
and pulling it rearward.
4. Remove bulb retainer ring by
turning it counterclockwise about
1/4 turn, then slide the ring off the
plastic base.
5. Without turning, carefully pull
bulb assembly out of parking lamp
assembly.
6. Insert the glass end of the new
bulb into the parking lamp
assembly socket. When the grooves
in the plastic base are aligned,
push the bulb into the socket until
the plastic base contacts the rear
of the socket.
7. Slip bulb retaining ring over the
plastic base and lock the ring into
the socket by turning it clockwise
until you feel a ªstop.º
8. Push the electrical connector
into the rear of the plastic base
until it ªsnaps.º
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189

9. Align top and bottom ribs of
parking lamp assembly with
corresponding slots on front of
vehicle.
10. Push gently until parking lamp
assembly seats (you will hear a
snap).
11. Replace screw removed in
step 1.
Replacing foglamp bulbs
1. Disconnect the electrical
connector from the back of the
foglamp assembly.
2. Twist, then pull the bulb from
the foglamp assembly.
3. Install the new bulb.
4. Connect the electrical connector
to the back of the foglamp
assembly.
High-mount brakelamp
To change the high-mount
brakelamp bulbs:
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190