Maintenance and Specifications 196
Engine compartment 197
Engine oil 198
Battery 202
Fuel information 210
Air filter(s) 223
Part numbers 228
Refill capacities 228
Lubricant specifications 230
Accessories 235
Index 238
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Copyright © 2003 Ford Motor Company
2003 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA English(fus)
Table of Contents
3
Vehicle Symbol Glossary
Power Windows
Front/Rear
Power Window Lockout
Child Safety Door
Lock/UnlockInterior Luggage
Compartment Release
Symbol
Panic AlarmEngine Oil
Engine CoolantEngine Coolant
Temperature
Do Not Open When HotBattery
Avoid Smoking, Flames,
or SparksBattery Acid
Explosive GasFan Warning
Power Steering FluidMaintain Correct Fluid
LevelMAX
MIN
Emission SystemEngine Air Filter
Passenger Compartment
Air FilterJack
Check fuel capLow tire warning
2003 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA English(fus)
Introduction
9
OPENING THE HOOD
1. Inside the vehicle, pull the hood
release handle located under the
instrument panel.
2. Go to the front of the vehicle and
release the auxiliary latch that is
located under the front of the hood.
3. Lift the hood until the lift
cylinders hold it open.
IDENTIFYING COMPONENTS IN THE ENGINE COMPARTMENT
4.6L SOHC V8 engine
1. Brake fluid reservoir
2. Engine oil dipstick
3. Windshield washer fluid reservoir
4. Air filter assembly
5. Power steering fluid reservoir6. Engine coolant reservoir
7. Battery
8. Engine oil filler cap
9. Automatic transmission fluid
dipstick
918
5476
3
2
2003 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA English(fus)
Maintenance and Specifications
197
Fuel quality
If you are experiencing starting, rough idle or hesitation driveability
problems during a cold start, try a different brand of “Regular” unleaded
gasoline. “Premium” 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.
It should not be necessary to add any aftermarket products to your fuel
tank if you continue to use high quality fuel of the recommended octane
rating. Aftermarket products could cause damage to the fuel system.
Repairs to correct the effects of using an aftermarket product in your
fuel may not be covered by your warranty.
Many of the world’s automakers issued the World-wide Fuel Charter that
recommends gasoline specifications to provide improved performance
and emission control system protection for your vehicle. Gasolines that
meet the World-wide Fuel Charter should be used when available. Ask
your fuel supplier about gasolines that meet the World-wide Fuel
Charter.
Cleaner air
Ford endorses the use of reformulated “cleaner-burning” gasolines to
improve air quality.
Running out of fuel
Avoid running out of fuel because this situation may have an adverse
affect on powertrain components.
If you have run out of fuel:
•You may need to cycle the ignition from OFF to ON several times after
refueling, to allow the fuel system to pump the fuel from the tank to
the engine.
•Your “Check Engine” indicator may come on. For more information on
the “Check Engine” indicator, refer to theInstrument Cluster
chapter.
Fuel Filter
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.
Replace the fuel filter 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.
2003 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA English(fus)
Maintenance and Specifications
214
If an overfill occurs, excess fluid
should be removed by a qualified
technician.
An overfill condition of
transmission fluid may cause
shift and/or engagement
concerns and/or possible
damage.
Do not use supplemental transmission fluid additives, treatments or
cleaning agents. The use of these materials may affect transmission
operation and result in damage to internal transmission components.
AIR FILTER MAINTENANCE
Refer to the scheduled maintenance guide for the appropriate intervals
for changing the air filter element.
When changing the air filter element, use only the Motorcraft air filter
element listed. Refer toMotorcraft Part Numbers.
Note:Do not start your engine with the air cleaner removed and do not
remove it while the engine is running.
Changing the air filter element
1. Release the clamps that secure the air filter housing cover.
2. Carefully separate the two halves of the air filter housing.
3. Remove the air filter element from the air filter housing.
4. Wipe the air filter housing and cover clean to remove any dirt or
debris and to ensure good sealing.
5. Install a new air filter element. Be
careful not to crimp the filter
element edges between the air filter
housing and cover. This could cause
filter damage and allow unfiltered
air to enter the engine if not
properly seated.
6. Replace the air filter housing cover and secure the clamps.
7. Replace the air inlet tube and secure the clamp.
DON’T ADD
2003 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA English(fus)
Maintenance and Specifications
223
Note:Failure to use the correct air filter element may result in severe
engine damage. The customer warranty may be voided for any damage to
the engine if the correct air filter element is not used.
INFORMATION ABOUT UNIFORM TIRE QUALITY GRADING
New vehicles are fitted with tires
that have a rating on them called
Tire Quality Grades. The Quality
grades can be found where
applicable on the tire sidewall
between tread shoulder and
maximum section width. For
example:
•Treadwear 200 Traction AA Temperature A
These Tire Quality Grades are determined by standards that the United
States Department of Transportation has set.
Tire Quality Grades apply to new pneumatic tires for use on passenger
cars. They do not apply to deep tread, winter-type snow tires,
space-saver or temporary use spare tires, tires with nominal rim
diameters of 10 to 12 inches or limited production tires as defined in
Title 49 Code of Federal Regulations Part 575.104(c)(2).
U.S. Department of Transportation-Tire quality grades:The U.S.
Department of Transportation requires Ford to give you the following
information about tire grades exactly as the government has written it.
Treadwear
The treadwear grade is a comparative rating based on the wear rate of
the tire when tested under controlled conditions on a specified
government test course. For example, a tire graded 150 would wear one
and one-half (1 1/2) times as well on the government course as a tire
graded 100. The relative performance of tires depends upon the actual
conditions of their use, however, and may depart significantly from the
norm due to variations in driving habits, service practices, and
differences in road characteristics and climate.
Traction AA A B C
The traction grades, from highest to lowest are AA, A, B, and C. The
grades represent the tire’s ability to stop on wet pavement as measured
under controlled conditions on specified government test surfaces of
asphalt and concrete. A tire marked C may have poor traction
performance.
2003 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA English(fus)
Maintenance and Specifications
224
MOTORCRAFT PART NUMBERS
Component 4.6L SOHC V8 engine
Air filter element FA-1668
Fuel filter FG-986B
Battery-standard BXT-65–650
Battery-heavy duty BXT-65–750
Oil filter FL-820-S
PCV valve EV-258
Spark plugs* AWSF-32P
* Refer to Vehicle Emissions Control Information (VECI) decal for spark
plug gap information.
REFILL CAPACITIES
Fluid Ford Part Name Capacity
Engine oil (includes
filter change)
6Motorcraft SAE 5W-20
Premium Synthetic
Blend Motor Oil (US)
Motorcraft SAE 5W-20
Super Premium Motor
Oil (Canada)5.7L (6.0 quarts)
Brake fluid Motorcraft High
Performance DOT 3
Motor Vehicle Brake
Fluid
1
Fill to line on reservoir
Power steering fluid Motorcraft MERCON
AT FFill to line on reservoir
Transmission fluid
2Motorcraft
MERCONVATF13.2L (13.9 quarts)3
Engine coolant4Motorcraft Premium
Gold Engine Coolant
(yellow-colored)18.0L (19.0 quarts)
Fuel tank N/A 71.9L (19.0 gallons)
2003 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA English(fus)
Maintenance and Specifications
228
A
ABS (see Brakes) .....................147
Air bag supplemental
restraint system ................124, 128
and child safety seats ............126
description ......................124, 128
disposal ....................................131
driver air bag ..................126, 129
indicator light ...........13, 128, 130
operation .........................126, 129
passenger air bag ...........126, 129
side air bag ..............................128
Air cleaner filter ...............223, 228
Air conditioning ..........................48
manual heating and air
conditioning system .................46
Air suspension ...........................151
description ..............................151
warning light .............................14
Antifreeze
(see Engine coolant) ................204
Anti-lock brake system
(see Brakes) ..............................147
Audio system (see Radio) .........22
Automatic transmission
driving an automatic
overdrive .................................152
fluid, adding ............................220
fluid, checking ........................220
fluid, refill capacities ..............228
fluid, specification ..................231
Auxiliary power point .................73
Axle
lubricant specifications ..230–231
refill capacities ........................228
traction lok ..............................155
B
Battery .......................................202acid, treating emergencies .....202
charging system warning
light ............................................13
jumping a disabled battery ....175
maintenance-free ....................202
replacement, specifications ...228
servicing ..................................202
voltage gauge ............................19
BeltMinder .................................119
Brakes ................................146–147
anti-lock ...................................147
anti-lock brake system
(ABS) warning light .........12, 147
brake warning light ..................12
fluid, checking and adding ....220
fluid, refill capacities ..............228
fluid, specifications .........230–231
lubricant specifications ..230–231
parking ....................................148
shift interlock ..........................151
Bulbs ............................................57
C
Capacities for refilling fluids ....228
Cassette tape player ...................31
CD changer .................................40
CD-single premium .....................22
Cell phone use ............................90
Certification Label ....................233
Changing a tire .........................170
Child safety restraints ..............131
child safety belts ....................131
Child safety seats ......................134
attaching with tether straps ..138
in front seat ............................136
in rear seat ..............................136
2003 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA English(fus)
Index
Index
238