2003 FORD EXPEDITION fuel pressure

When this occurs the vehicle will still operate. However:
•The engine power will be limited.
•The air conditioning system will be disabled.
Continued operation will increase the engine temperature:
•The engine will completely shut down.
•Steering and braking effort will increase.
Once the engine temperature cools, the engine can be re-started. Take
your vehicle to a service facility as soon as possible to minimize engine
damage.
When fail-safe mode is activated
You have limited engine power when in the fail-safe mode, so drive the
vehicle with caution. The vehicle will not be able to maintain high speed
operation and the engine will run rough. Remember that the engine is
capable of completely shutting down automatically to prevent engine
damage, therefore:
1. Pull off the road as soon as safely possible and turn off the engine.
2. Arrange for the vehicle to be taken to a service facility.
3. If this is not possible, wait a short period for the engine to cool.
4. Check the coolant level and replenish if low.
Never remove the coolant reservoir cap while the engine is
running or hot.
5. Restart the engine and take your vehicle to a service facility.
Driving the vehicle without repairing the engine problem
increases the chance of engine damage. Take your vehicle to a
service facility as soon as possible.
WHAT YOU SHOULD KNOW ABOUT AUTOMOTIVE FUELS
Important safety precautions
Do not overfill the fuel tank. The pressure in an overfilled tank
may cause leakage and lead to fuel spray and fire.
Maintenance and Specifications
280

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, excessive pressure or
vacuum in the fuel tank may damage the fuel system or cause
the fuel cap to disengage in a collision, which may result in possible
personal injury.
Automotive fuels can cause serious injury or death if misused or
mishandled.
Gasoline may contain benzene, which is a cancer-causing agent.
Observe the following guidelines when handling automotive fuel:
•Extinguish all smoking materials
and any open flames before
fueling your vehicle.
•Always turn off the vehicle before
fueling.
•Automotive fuels can be harmful
or fatal if swallowed. Fuel such as gasoline is highly toxic and if
swallowed can cause death or permanent injury. 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.
•Avoid inhaling fuel vapors. Inhaling too much fuel vapor of any kind
can lead to eye and respiratory tract irritation. In severe cases,
excessive or prolonged breathing of fuel vapor can cause serious
illness and permanent injury.
•Avoid getting fuel liquid in your eyes. If fuel is splashed in the eyes,
remove contact lenses (if worn), flush with water for 15 minutes and
seek medical attention. Failure to seek proper medical attention could
lead to permanent injury.
Maintenance and Specifications
281

If”Check fuel cap”displays in the message center or the”Service Engine
Soon”indicator (vehicle without message center) comes on and stays on
after you start the engine, the fuel filler cap may not be properly
installed. Turn off the engine, remove the fuel filler cap, align the cap
properly and reinstall it.
If you must replace the fuel filler cap, replace it with a fuel filler
cap that is designed for your vehicle. The customer warranty may
be void for any damage to the fuel tank or fuel system if the
correct 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, excessive pressure or
vacuum in the fuel tank may damage the fuel system or cause
the fuel cap to disengage in a collision, which may result in possible
personal injury.
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 fuel containing methanol. It can damage critical fuel system
components.
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
“Regular”unleaded gasoline with
pump (R+M)/2 octane rating of 87.
We do not recommend the use of
gasolines labeled as“Regular”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.
87(R+M)/2 METHOD
Maintenance and Specifications
283

•Revving the engine before turning it off may reduce fuel economy.
•Using the air conditioner or defroster may reduce fuel economy.
•You may want to turn off the speed control in hilly terrain if
unnecessary shifting between third and fourth gear occurs.
Unnecessary shifting of this type could result in reduced fuel
economy.
•Warming up a vehicle on cold mornings is not required and may
reduce fuel economy.
•Resting your foot on the brake pedal while driving may reduce fuel
economy.
•Combine errands and minimize stop-and-go driving.
Maintenance
•Keep tires properly inflated and use only recommended size.
•Operating a vehicle with the wheels out of alignment will reduce fuel
economy.
•Use recommended engine oil. Refer toLubricant specificationsin
this chapter.
•Perform all regularly scheduled maintenance items. Follow the
recommended maintenance schedule and owner maintenance checks
found in your vehicle scheduled maintenance guide.
Conditions
•Heavily loading a vehicle or towing a trailer may reduce fuel economy
at any speed.
•Carrying unnecessary weight may reduce fuel economy (as much as
0.4 km/L [1 mpg] is lost for every 180 kg [400 lb] of weight carried).
•Adding certain accessories to your vehicle (for example bug
deflectors, rollbars/light bars, running boards, ski/luggage racks) may
reduce fuel economy.
•Using fuel blended with alcohol may lower fuel economy.
•Fuel economy may decrease with lower temperatures during the first
12–16 km (8–10 miles) of driving.
•Driving on flat terrain offers improved fuel economy as compared to
driving on hilly terrain.
•Transmissions give their best fuel economy when operated in the top
cruise gear and with steady pressure on the gas pedal.
Maintenance and Specifications
287

The traction grade assigned to this tire is based on
straight-ahead braking traction tests, and does not include
acceleration, cornering, hydroplaning or peak traction characteristics.
Temperature A B C
The temperature grades are A (the highest), B and C, representing the
tire’s resistance to the generation of heat and its ability to dissipate heat
when tested under controlled conditions on a specified indoor laboratory
test wheel. Sustained high temperature can cause the material of the tire
to degenerate and reduce tire life, and excessive temperature can lead to
sudden tire failure. The grade C corresponds to a level of performance
which all passenger car tires must meet under the Federal Motor Vehicle
Safety Standard No. 109. Grades B and A represent higher levels of
performance on the laboratory test wheel than the minimum required by
law.
The temperature grade for this tire is established for a tire that
is properly inflated and not overloaded. Excessive speed,
underinflation, or excessive loading, either separately or in
combination, can cause heat buildup and possible tire failure.
SERVICING YOUR TIRES
Checking the tire pressure
•Use an accurate tire pressure gauge.
•Check the tire pressure when tires arecold,after the vehicle has
been parked for at least 3 hours or has been driven less than 5 km (3
miles). As you drive, the temperature in the tire warms up, increasing
the tire pressure.
•Adjust tire pressure to recommended specifications found on the
Certification Label. Tire pressure information can also be found on the
Tire Information label located on the inside of the fuel filler door.
•Check tires for proper air pressure monthly. Check spare tire for
proper air pressure every six months.
Improperly inflated tires can affect vehicle handling and can fail
suddenly, possibly resulting in loss of vehicle control.
Maintenance and Specifications
296

Changing tires with TPMS
It is recommended that you always
have your tires serviced by a dealer
or qualified technician.Each tire is
equipped with a tire pressure
sensor mounted on the wheel
inside the tire behind the valve
stem. The tire pressure sensor
must be unbolted from the wheel prior to tire removal. The
sensor can be removed by loosening the nut at the valve stem.
Failure to remove the sensor may damage it.The rubber grommet
(washer) between the wheel and the tire pressure sensor needs to be
replaced when any tire is changed to minimize air leaks.
The tire pressure should be checked periodically (at least monthly) using
a tire gauge, refer toChecking the tire pressurein this chapter.
SNOW TIRES AND CHAINS
Snow tires must be the same size and grade as the tires you
currently have on your vehicle.
The tires on your vehicle have all weather treads to provide traction in
rain and snow. However, in some climates, you may need to use snow
tires and chains.
Follow these guidelines when using snow tires and chains:
•Use only cable type chains or chains offered by Ford as an accessory
or equivalent. Other conventional link type chains may contact and
cause damage to the vehicle’s wheel house and/or body.
•Do not install chains on the front wheels. Chains on the front wheels
may interfere with suspension components.
•Install chains securely, verifying that the chains do not touch any
wiring, brake lines or fuel lines.
•Drive cautiously. If you hear the chains rub or bang against your
vehicle, stop and re-tighten the chains. If this does not work, remove
the chains to prevent damage to your vehicle.
•If possible, avoid fully loading your vehicle.
•Remove the tire chains when they are no longer needed. Do not use
tire chains on dry roads.
•The suspension insulation and bumpers will help prevent vehicle
damage. Do not remove these components from your vehicle when
using snow tires and chains.
Maintenance and Specifications
299

cleaning ...................................260
coolant .....................................274
fail-safe coolant ......................279
idle speed control ...................272
lubrication
specifications ..................303, 305
refill capacities ........................300
service points ..................267–268
starting after a collision .........228
Engine block heater .................194
Engine oil ..................................269
change oil soon warning,
message center .......................269
checking and adding ..............269
dipstick ....................................269
filter, specifications ........271, 300
recommendations ...................271
refill capacities ........................300
specifications ..................303, 305
Exhaust fumes ..........................194
F
Fail safe cooling ........................279
Floor mats .................................126
Fluid capacities .........................300
Foglamps .....................................81
Four-Wheel Drive
vehicles ................................14, 208
control trac .............................208
description ..............................209
driving off road .......................211
electronic shift ........................210
indicator light .........................208
preparing to drive
your vehicle ............................198
Fuel ............................................280
calculating fuel
economy ..........................116, 285
cap ...........................................282capacity ...................................300
choosing the right fuel ...........283
comparisons with EPA
fuel economy estimates .........288
detergent in fuel .....................284
filling your vehicle
with fuel ..................280, 282, 285
filter, specifications ........284, 300
fuel pump shut-off switch .....228
gauge .........................................17
improving fuel economy ........285
low fuel warning light ..............12
octane rating ...................283, 305
quality ......................................284
running out of fuel .................284
safety information relating
to automotive fuels ................280
Fuses ..................................230–231
G
Garage door opener ..................108
Gas cap (see Fuel cap) ............282
Gas mileage
(see Fuel economy) .................285
Gauges .........................................15
battery voltage gauge ...............16
engine coolant temperature
gauge .........................................15
engine oil pressure gauge ........16
fuel gauge ..................................17
odometer ...................................17
speedometer .............................17
tachometer ................................18
trip odometer ............................18
GAWR (Gross Axle
Weight Rating) ..........................219
calculating ...............................221
definition .................................219
driving with a heavy load ......219
location ....................................219
Index
315

cruise indicator .........................13
door ajar ....................................13
engine oil pressure ...................13
high beam .................................13
low fuel ......................................12
low washer fluid .......................12
overdrive off ..............................14
safety belt .................................12
service engine soon ..................10
speed control ..........................106
turn signal indicator .................13
Limited-slip axle .......................198
Load limits .................................219
GAWR ......................................219
GVWR ......................................219
trailer towing ..........................219
Loading instructions .................221
Locks
childproof ................................128
doors ........................................128
Lubricant specifications ...303, 305
Lumbar support, seats .............143
M
Message center .........................114
english/metric button .............119
system check button ..............120
warning messages ...................120
Mirrors .........................................95
automatic dimming rearview
mirror ......................................100
fold away .................................102
heated ......................................101
programmable
memory ...........................131, 144
side view mirrors
(power) ...................................101
Moon roof ....................................96
Motorcraft parts ................284, 300O
Octane rating ............................283
Odometer .....................................17
Oil (see Engine oil) ..................269
Overdrive ...................................124
P
Panic alarm feature,
remote entry system ................130
Parking brake ............................196
Parts (see Motorcraft parts) ....300
Pedals (see Power
adjustable foot pedals) .............102
Power distribution box
(see Fuses) ...............................231
Power door locks ......................128
Power point .................................97
Power steering ..................197–198
fluid, checking and adding ....289
fluid, refill capacity ................300
fluid, specifications .........303, 305
Power Windows ...........................99
Preparing to drive your
vehicle ........................................198
R
Radio ..........................19, 27, 37–38
Radio reception ...........................56
Rear window defroster ...............80
Relays ........................................230
Remote entry system .......129–130
illuminated entry ....................133
locking/unlocking
doors ........................128–130, 135
Index
317