2008 Mercury Grand Marquis fuel

If theindicator remains on, have your vehicle serviced at the first
available opportunity. Although some malfunctions detected by the
OBD-II may not have symptoms that are apparent, continued driving
with the
indicator on can result in increased emissions, lower fuel
economy, reduced engine and transmission smoothness, and lead to more
costly repairs.
Readiness for Inspection/Maintenance (I/M) testing
Some state/provincial and local governments may have
Inspection/Maintenance (I/M) programs to inspect the emission control
equipment on your vehicle. Failure to pass this inspection could prevent
you from getting a vehicle registration. Your vehicle may not pass the I/M
test if the
indicator is on or not working properly (bulb is burned
out), or if the OBD-II system has determined that some of the emission
control systems have not been properly checked. In this case, the vehicle
is considered not ready for I/M testing.
If the
indicator is on or the bulb does not work, the vehicle may
need to be serviced. Refer to the On board diagnostics (OBD-II)
description in this chapter.
If the vehicle’s engine or transmission has just been serviced, or the
battery has recently run down or been replaced, the OBD-II system may
indicate that the vehicle is not ready for I/M testing. To determine if the
vehicle is ready for I/M testing, turn the ignition key to the ON position
for 15 seconds without cranking the engine. If the
indicator blinks
eight times, it means that the vehicle is not ready for I/M testing; if
the
indicator stays on solid, it means that the vehicle is ready for
I/M testing.
The OBD-II system is designed to check the emission control system
during normal driving. A complete check may take several days. If the
vehicle is not ready for I/M testing, the following driving cycle consisting
of mixed city and highway driving may be performed:
15 minutes of steady driving on an expressway/highway followed by 20
minutes of stop-and-go driving with at least four 30-second 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. If
the vehicle is still not ready for I/M testing, the above driving cycle will
have to be repeated.
2008 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA(fus)
Maintenance and Specifications
257

Note:Be sure the hinge features of the air filter cover to the air filter
housing are fully engaged when reassembling the air filter assembly.
Note:Failure to use the correct air filter element may result in severe
engine damage. The customer warranty may be void for any damage to
the engine if the correct air filter element is not used.
MOTORCRAFT PART NUMBERS
Component 4.6L SOHC V8
engine4.6L FFV SOHC V8
engine
Air filter element FA-1032 FA-1032
Fuel filter FG-986B FG-986B
Battery-standard BXT-65–650 BXT-65–650
Battery-heavy duty BXT-65–750 BXT-65–750
Oil filter FL-820-S FL-820-S
PCV valve
11
Spark plugs22
1
The PCV valve is a critical emission component. It is one of the items
listed inscheduled maintenance informationand is essential to the
life and performance of your vehicle and to its emissions system.
For PCV valve replacement, see your authorized dealer. Refer to
scheduled maintenance informationfor the appropriate intervals for
changing the PCV valve.
Replace the PCV valve with one that meets Ford material and
design specifications for your vehicle, such as a Motorcraft or
equivalent replacement part. The customer warranty may be void
for any damage to the emissions system if such a PCV valve is not
used.
2For spark plug replacement, see your authorized dealer. Refer to
scheduled maintenance informationfor the appropriate intervals for
changing the spark plugs.
Replace the spark plugs with ones that meet Ford material and
design specifications for your vehicle, such as Motorcraft or
equivalent replacement parts. The customer warranty may be
void for any damage to the engine if such spark plugs are not
used.
2008 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA(fus)
Maintenance and Specifications
262

Item Capacity Ford part nameFord part number /
Ford specification
Hinges, latches, striker
plates, fuel filler door
hinge and seat tracks— Multi-Purpose GreaseXG-4 or XL-5 /
ESB-M1C93-B
Lock cylinders —Motorcraft Penetrating
and Lock LubricantXL-1 /
None
Power steering fluidFill to line on
reservoirMotorcraft MERCONV
AT FXT-5-QM /
MERCONV
Automatic transmission
fluid (4R75E)13.9 quarts
(13.2L)
3
Motorcraft MERCONV
AT F
4
XT-5-QM /
MERCONV
Rear axle fluid
5
5.0 pints (2.4L)
6
Motorcraft SAE 80W-90
Premium Rear Axle
LubricantXY-80W90-QL /
WSP-M2C197-A
Windshield washer fluidFill to line on
reservoirMotorcraft Premium
Windshield Washer
ConcentrateZC-32-A /
WSB-M8B16-A2
Fuel Tank19.0 gallons
(71.9L)——
1Add the coolant type originally equipped in your vehicle.2Use of synthetic or synthetic blend motor oil is not mandatory. Engine oil need only meet the
requirements of Ford specification WSS-M2C930-A and the API Certification mark.3Indicates 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.
2008 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA(fus)
Maintenance and Specifications
264

ENGINE DATA
Engine 4.6L V8 engine 4.6L FFV V8 engine
Cubic inches 281 281
Required fuel 87 octane 87 octane or Ethanol
(E 85)
Firing order 1-3-7-2-6-5-4-8 1-3-7-2-6-5-4-8
Ignition system Coil on plug Coil on plug
Spark plug gap 0.052–0.056 inch
(1.32–1.42 mm)0.041–0.047 inch
(1.04–1.20 mm)
Compression ratio 9.4:1 9.4:1
Engine drivebelt routing
•4.6L V8 Engine
2008 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA(fus)
Maintenance and Specifications
266

Exhaust fumes ..........................176
F
Fail safe cooling ........................244
Flexible Fuel Vehicle (FFV) ....245
Floor mats ...................................82
Fluid capacities .........................263
Foglamps .....................................39
Fuel ............................................245
calculating fuel
economy ......................56, 76, 252
cap ...........................................248
capacity ...................................263
choosing the right fuel ...........249
comparisons with EPA fuel
economy estimates .................255
detergent in fuel .....................250
filling your vehicle
with fuel ..................245, 248, 252
filter, specifications ........245, 262
fuel pump shut-off switch .....193
improving fuel economy ........252
octane rating ...................250, 266
quality ..............................250–251
running out of fuel .................251
safety information relating to
automotive fuels .....................245
Fuel - flex fuel vehicle
(FFV) .........................245, 249–250
Fuses ..................................194–195
G
Gas cap (see Fuel cap) ............248
Gas mileage
(see Fuel economy) .................252
Gauges .........................................15
H
Hazard flashers .........................192Head restraints .........................100
Headlamps ...................................38
aiming ........................................40
autolamp system .......................38
bulb specifications ....................44
daytime running lights .............39
flash to pass ..............................39
high beam .................................39
replacing bulbs .........................45
turning on and off ....................38
Heating
heating and air conditioning
system .................................34–35
Homelink wireless control
system ..........................................70
Hood ..........................................231
I
Ignition ...............................173, 266
Illuminated visor mirror .............51
Infant seats
(see Safety seats) .....................136
Inspection/maintenance (I/M)
testing ........................................257
Instrument panel
cleaning ...................................227
cluster ........................................10
lighting up panel
and interior ...............................40
J
Jump-starting your vehicle ......208
K
Keyless entry system .................92
autolock .....................................85
keypad .......................................92
2008 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA(fus)
Index
273

Remote entry system ...........88, 92
illuminated entry ......................91
locking/unlocking doors ...........88
opening the trunk .....................89
panic alarm ...............................89
replacement/additional
transmitters ...............................90
replacing the batteries .............89
Roadside assistance ..................191
S
Safety Belt Maintenance ..........114
Safety belts (see Safety
restraints) ..................105, 109–114
Safety defects,
reporting ............................221–222
Safety restraints ........105, 109–114
Belt-Minder...........................115
extension assembly ................113
for adults .........................110–113
for children .............................132
lap belt ....................................111
Occupant Classification
Sensor ......................................107
safety belt maintenance .........114
warning light and chime ........115
Safety seats for children ..........136
Safety Compliance
Certification Label ....................267
Seats ..........................................100
child safety seats ....................136
front seats ...............................100
SecuriLock passive anti-theft
system ....................................94, 97
Servicing your vehicle ..............230
Setting the clock
AM/FM single CD .....................22
AM/FM stereo ...........................19AM/FM/In-dash 6 CD ................31
AM/FM/Tape/CD .......................26
Spark plugs,
specifications .....................262, 266
Specification chart,
lubricants ...................................263
Speed control ..............................65
Starting a flex fuel vehicle .......175
Starting your vehicle ........173–175
jump starting ..........................208
Steering
speed sensitive .......................184
Steering wheel
controls ......................................68
tilting .........................................51
T
Tilt steering wheel ......................51
Tire Pressure Monitoring
System (TPMS)
Tires, Wheels and Loading ....158
Tires ...................................143–144
alignment ................................151
care ..........................................147
changing ..................................205
checking the pressure ............147
inflating ...................................145
label .........................................157
replacing ..................................149
rotating ....................................151
safety practices .......................150
sidewall information ...............152
snow tires and chains ............163
spare tire .........................202–203
terminology .............................144
tire grades ...............................144
treadwear ........................143, 148
Towing .......................................169
2008 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA(fus)
Index
275