1999 FORD EXPEDITION service

Choosing the right fuel
Use only UNLEADED FUEL. The use of leaded fuel is prohibited by law
and could damage your vehicle.
Do not use gasolines containing methanol. It can damage critical fuel
systems components.
Vehicles certified to meet California emission standards (indicated on the
underhood Vehicle Emissions Control Information label) are designed to
operate on California cleaner-burning, low-sulfur gasolines. If you have a
California-certified vehicle and California cleaner-burning gasoline is not
available when you refuel, your engine should perform adequately.
However, the performance of the emission control devices and systems
may be adversely affected. In New York and Massachusetts, which have
adopted California's emission standards without requiring the sale of
California cleaner-burning gasoline, repairs to correct the effects of using
non-California fuel may not be covered by the emissions warranty.
Your vehicle was not designed to use fuel or fuel additives with metallic
compounds, including manganese-based compounds containing (MMT).
Repairs to correct the effects of using a fuel for which your vehicle was
not designed may not be covered by your warranty.
Octane recommendations
Your vehicle is designed to use
ªRegularº unleaded gasoline with an
(R+M)/2 octane rating of 87. We do
not recommend the use of gasolines
labeled as ªRegularº that are sold
with octane ratings of 86 or lower in high altitude areas.
Do not be concerned if your engine sometimes knocks lightly. However, if
it knocks heavily under most driving conditions while you are using fuel
with the recommended octane rating, see your dealer or a qualified
service technician to prevent any engine damage.
Fuel quality
If you are experiencing starting, rough idle or hesitation driveability
problems during a cold start, try a different brand of ªRegularº unleaded
gasoline. ªPremiumº unleaded gasoline is not recommended (particularly
in the United States) because it may cause these problems to become
more pronounced. If the problems persist, see your dealer or a qualified
service technician.
87(R+M)/2 METHOD
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The American Automobile Manufacturers Association (AAMA) issued a
fuel specification to provide information on high quality fuels that
optimize the performance of your vehicle. We recommend the use of
fuels 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.
Running out of fuel
Avoid running out fuel because this situation may have an adverse affect
on modern powertrain components.
If you have run out of fuel:
²You may need to crank the engine several times before the system
starts to pump fuel from the tank to the engine.
²Your ªService Engine Soonº light may come on. For more information
on the ªService Engine Soonº light, refer to theInstrumentation
chapter.
Fuel Filler Cap
Your fuel tank filler cap has an indexed design with a one-eighth turn
on/off feature.
When fueling your vehicle:
1. Turn the engine off.
2. Carefully turn the filler cap counterclockwise 1/8 of a turn until it
stops.
3. Pull to remove the cap from the fuel filler pipe.
4. To install the cap, align the tabs on the cap with the notches on the
filler pipe.
5. Turn the filler cap clockwise 1/8 of a turn until it stops.
If the ªService Engine Soon/Check Engineº indicator comes on and stays
on when you start the engine, the fuel filler cap may not be properly
installed. Turn off the engine, remove the fuel filler cap and reinstall it
being careful to align the cap properly.
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173

If you must replace the fuel filler cap, replace it with a genuine
Ford or Motorcraft part. The customer warranty may be void for
any damage to the fuel tank or fuel system if a genuine Ford or
Motorcraft fuel filler cap is not used.
The fuel system may be under pressure. If the fuel filler cap is
venting vapor or if you hear a hissing sound, wait until it stops
before completely removing the fuel filler cap. Otherwise, fuel may
spray out and injure you or others.
If you do not use the proper fuel filler cap, the pressure in the
fuel tank can damage the fuel system or cause it to work
improperly in a collision.
Fuel Filter
Your vehicle is equipped with a fuel filter that is mounted on the
underbody.
For fuel filter replacement, see your dealer or a qualified service
technician. Refer to the Scheduled Maintenance Guide for the
appropriate intervals for changing the fuel filter.
If you replace the fuel filter, replace it with an authorized
Motorcraft part. The customer warranty may be void for any
damage to the fuel system if an authorized Motorcraft fuel filter
is not used.
ESSENTIALS OF GOOD FUEL ECONOMY
Measuring techniques
Your best source of information about actual fuel economy is you, the
driver. You must gather information as accurately and consistently as
possible. Fuel expense, frequency of fillups or fuel gauge readings are
NOT accurate as a measure of fuel economy. We do not recommend
taking fuel economy measurements during the first 1 600 km (1 000
miles) of driving (engine break-in period). You will get a more accurate
measurement after 3 000 km±5 000 km (2 000 miles-3 000 miles).
The advertised fuel capacity of the fuel tank on your vehicle is equal to
the rated refill capacity of the fuel tank as listed in the Refill Capacities
chart in this ªOwner Guide.º The advertised capacity is the amount of
the Indicated Capacity and the Empty Reserve combined. Indicated
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174

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 items listed in your Scheduled Maintenance Guide performed
according to the specified schedule.
The scheduled maintenance items listed in the Scheduled Maintenance
Guide are 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.
Illumination of the charging system warning light,Check Engine
indicator light or the temperature warning light, fluid leaks, strange
odors, smoke or loss of oil pressure, could indicate that the emission
control system is not working properly.
Exhaust leaks may result in entry of harmful and potentially
lethal fumes into the passenger compartment.
Do not make any unauthorized changes to your vehicle or engine. By
law, vehicle owners and anyone 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.
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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 diagnostics system. If your ªCheck Engine/Service Engine
Soonº light is on, refer to the description in theWarning Lights and
Chimessection of theInstrumentationchapter. 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 on-board diagnostics system is reset to a ªnot ready for I/M testº
condition. To ready the on-board diagnostics system for I/M testing, a
minimum of 30 minutes of city and highway driving is necessary as
described below:
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
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Using the right bulbs
Function Number of bulbs Trade number
Headlamps 2 9007
Front park/turn lamps 2 3157NAK
Front sidemarker 2 194NA
Foglamps 2 899
Turn/tail/brake lamps 2 3157K
Liftgate lamp 2 916
Backup lamp 2 3156K
License lamp 2 168
High-mount brake lamp 3 912
To replace all instrument panel lights - see your dealer
REPLACING THE INTERIOR BULBS
Check the operation of the following interior bulbs frequently:
²interior overhead lamp
²map lamp
Map lamps
To change the map lamp bulbs:
1. Use a small screwdriver to
remove the map lamp lens.
2. To remove the old bulb, twist
1¤4
turn and pull it out.
3. Twist in a new bulb.
4. Press the map lamp lens back on
and test the lamp operation.
AIMING THE HEADLAMPS
The alignment of your headlamps should be checked by a qualified
service technician if:
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Motorcraft part numbers
Component 4.6L V8 engine 5.4L V8 engine
Air filter element FA-1634 FA-1634
Battery BTX-65-650 BTX-65-650
Fuel filter FG-986B FG-986B
Oil filter FL-820-S FL-820-S
PCV valve EV-233 EV-233
Spark plugs* AWSF-32PP** AWSF-22E
* Refer to Vehicle Emissions Control Information (VECI) decal for spark
plug gap information.
** If a spark plug is removed for inspection, it must be reinstalled in the
same cylinder. Cylinders No. 1, 2, 3 and 4 have a ªPGº suffix. Cylinders
No. 5, 6, 7 and 8 have a ªPº suffix. If a spark plug needs to be replaced,
use only spark plugs with the service part number suffix letter as shown
on the engine decal.
Capacities and specifications
190

FluidFord Part
NameApplication Capacity
Rear axle
lubricant
4Motorcraft SAE
75W140
Synthetic Rear
Axle LubricantAll
2.9-3.1L
(5.5-5.8 pints)
Windshield
washer fluidUltra-Clear
Windshield
Washer
ConcentrateAll
4.1L
(4.5 quarts)
1Ensure the correct automatic transmission fluid is used for a specific
application. Check the container to verify the fluid is MERCONt
approved. Transmission fluid requirements are indicated on the dipstick
handle. Refer to the Scheduled Maintenance Guide.
Do NOT use any non-approved automatic transmission fluid for an
application specifying MERCONt. Use of a non-approved fluid may cause
internal transmission component damage.
2Indicates only approximate dry-fill capacity. Some applications may
vary based on cooler size and if equipped with an in-tank cooler. The
amount of transmission fluid and fluid level should be set by the
indication on the dipstick's normal operating range.
3Use Ford Premium Engine Coolant (green in color). DO NOT USE Ford
Extended Life Engine Coolant (orange in color). Refer toAdding engine
coolant, in the Maintenance and Care chapter.
4Your vehicle's rear axle is filled with a synthetic rear axle lubricant and
is considered lubricated for life.These lubricants are not to be checked or
changed unless a leak is suspected, service is required or the axle has
been submerged in water. The axle lubricant should be changed any time
the axle has been submerged in water. Add 118 ml (4 oz.) of additive
friction modifier C8AZ-19B546±A, Ford specification EST-M2C118±A for
complete refill of Traction-Lok axles.
Service refill capacities are determined by filling the rear axle 6 mm to
14 mm (1/4 inch to 9/16 inch) below the bottom of the filler hole.
Capacities and specifications
193