1998 FORD EXPEDITION fuel cap

the engine is started, one of the
engine's emission control systems
may be malfunctioning. The light
may illuminate without a
driveability concern being noted.
The vehicle will usually be drivable
and will not require towing.
What you should do if the
check engine light illuminates
Light turns on solid:
This means that the OBD II system
has detected a malfunction.
Temporary malfunctions may cause
yourCheck Enginelight to
illuminate. Examples are:
1. The vehicle has run out of fuel.
(The engine may misfire or run
poorly.)
2. Poor fuel quality or water in the
fuel.
3. The fuel cap may not have been
properly installed and securely
tightened.
These temporary malfunctions can
be corrected by filling the fuel tank
with good quality fuel and/or
properly installing and securely
tightening the gas cap. After three
driving cycles without these or any
other temporary malfunctions
present, theCheck Enginelight
should turn off. (A driving cycle
consists of a cold engine startup
followed by mixed city/highway
driving.) No additional vehicle
service is required.
Instrumentation
7

than the advertised capacity due to
the reserve fuel.
Speedometer
Indicates the current vehicle
speed.
Engine coolant temperature
gauge
Indicates the temperature of the
engine coolant. At normal
operating temperature, the needle
remains within the normal area
(the area between the ªHº and
ªCº). If it enters the red section,
the engine is overheating. Stop the
vehicle, switch off the ignition and
let the engine cool. Refer to
Engine coolantin the
Maintenance and carechapter.
Never remove the coolant
recovery cap while the
engine is running or hot.
This gauge indicates the
temperature of the engine coolant,
not the coolant level. If the coolant
is not at its proper level or
mixture, the gauge indication will
not be accurate.
0
000000000
MPH
20km/h 406080
100
120
140
160
0 1020304050
60
70
80
90
100
H
C
Instrumentation
14

For information on replacement air
filter elements, refer to the
Capacities and specifications
chapter.
WINDSHIELD WIPER BLADES
Check the wiper blades at least
twice a year or when they seem
less effective. Substances such as
tree sap and some hot wax
treatments used by commercial car
washes reduce the effectiveness of
wiper blades.
Checking the wiper blades
If the wiper blades do not wipe
properly, clean both the windshield
and wiper blades using undiluted
windshield wiper solution or a mild
detergent. Rinse thoroughly with
clean water. To avoid damaging the
blades, do not use fuel, kerosene,
paint thinner or other solvents.
Changing the wiper blades
When replacing wiper blade
assemblies, always use a
Motorcraft part or equivalent. To
make replacing the wipers easy,
turn the ignition to ACC, then turn
the wipers on. When the wipers
reach the vertical position, turn
the ignition to LOCK.
To replace the wiper blades:
Maintenance and care
171

If you do not use the
proper fuel cap, the
pressure in the fuel tank can
damage the fuel system or cause
it to work improperly in a
collision.
The fuel system may be
under pressure. If the fuel
cap is venting vapor or if you
hear a hissing sound, wait until it
stops before completely
removing the cap.
Automotive fuels can
cause serious injury or
death if misused or mishandled.
Observe the following guidelines
when handling automotive fuel:
²Extinguish all smoking materials
and any open flames before
fueling your vehicle.
²Always turn off the vehicle
before fueling.
²Automotive fuels can be harmful
or fatal if swallowed. If fuel is
swallowed, call a physician
immediately, even if no
symptoms are immediately
apparent. The toxic effects of
fuel may not be visible for
hours.
²Fuels can also be harmful if
absorbed through the skin. If
fuel is splashed on the skin,
Maintenance and care
178

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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SNAPREM0VETHENPULLTO
Maintenance and care
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).
Maintenance and care
182

MOTORCRAFT PART NUMBERS
Component 4.6L engine 5.4L engine
Air filter FA-1632 FA-1632
Fuel filter FG-872 FG-872
Battery (standard) BXT-59 BXT-59
Battery (optional) BXT-65-750 BXT-65-750
Oil filter FL-820-S FL-820-S
PCV Valve EV-98 EV-233
Spark plugs*-platinum AWSF-32PP AWSF-22E
* Replacement double platinum spark plug ªEEº will replace ªEº and
ªEGº and ªPº will replace ªPº and ªPGº suffixed spark plugs.
REFILL CAPACITIES
Fluid Ford Part
NameApplication
Capacity
Engine oil
(includes filter
change)Motorcraft 5W30
Super Premium
Motor OilAll
5.7L
(6.0 quarts)
Brake fluid Ford High
Performance
DOT 3 Brake
FluidAll
Fill to line in
reservoir
Power steering
fluidMotorcraft
MERCONtAT FAll Fill to line in
reservoir
Transmission
fluidMotorcraft
MERCONtV
AT F4R70W
13.1L
(13.9 quarts)
Motorcraft
MERCONtAT FE4OD (4 x 2)15.0L
(15.9 quarts)
E4OD (4 x 4) 15.5L
(16.4 quarts)
Transfer case
fluidMotorcraft
MERCONtAT F4 x 4 vehicles 1.9L
(2.0 quarts)
Capacities and specifications
200

inch) below the bottom of the filler
hole.
LUBRICANT SPECIFICATIONS
ItemFord part
nameFord part
numberFord
specification
Windshield
washer fluid
reservoirUltra-Clear
Windshield
Washer
ConcentrateC9AZ-19550-AC
OR -BCESR-M17P5
Body hinges,
latches, door
striker plates
and rotors, seat
tracks, fuel filler
door hinge and
spring, hood
latch, auxiliary
latchMulti-Purpose
GreaseD7AZ-19584-AA
OR
DOAZ-19584-AAESR-M1C159-A
OR
ESB-M1C93-B
Lock cylinders,
swing-away
spare tire carrier
padlockPenetrating
LubricantE8AZ-19A501-B NONE
Brake master
cylinderHigh
Performance
DOT 3 Motor
Vehicle Brake
FluidC6AZ-19542-AB ESA-M6C25-A
AND DOT 3
Driveshaft, slip
spline, double
Cardan joint
center ballPremium Long
Life GreaseXG-1-C or
XG-1-KESA-M1C75-B
Engine coolant Ford Premium
Cooling System
FluidE2FZ-195490-AA ESE-M97B44-A
Capacities and specifications
202