•The suspension insulation and bumpers will help prevent vehicle
damage. Do not remove these components from your vehicle when
using snow tires and chains.
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
1
Spark plugs2
1
The PCV valve is a critical emission component. It is one of the items
listed in theScheduled Maintenance Guideand is essential to the life
and performance of your vehicle and to its emissions system.
For PCV valve replacement, see your dealer or a qualified service
technician. Refer to theScheduled Maintenance Guidefor 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 dealer or a qualified service
technician. Refer to theScheduled Maintenance Guidefor 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.
Refer to Vehicle Emissions Control Information (VECI) decal for spark
plug gap information.
2004 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA English(fus)
Maintenance and Specifications
224
Rear window defroster ...............35
Relays ................................146, 153
Remote entry system ...........74, 76
illuminated entry ......................78
locking/unlocking doors ...........75
opening the trunk .....................76
panic alarm ...............................76
replacement/additional
transmitters ...............................78
Roadside assistance ..................144
S
Safety Belt Maintenance ..........103
Safety belts (see
Safety restraints) ............90, 93–97
Safety defects, reporting ..........174
Safety restraints ..............90, 93–97
belt minder ...............................99
extension assembly ................103
for adults .............................94–97
for children .............................111
lap belt ......................................98
safety belt maintenance .........103
warning light and chime ....98–99
Safety seats for children ..........114
Seat belts (see
Safety restraints) ........................90
Seats ............................................86
child safety seats ....................114
front seats .................................86
SecuriLock passive
anti-theft system ...................82–84
Servicing your vehicle ..............181
Setting the clock
AM/FM/CD .................................24
AM/FM/Tape ..............................27
AM/FM/Tape/CD .......................22Spark plugs,
specifications .....................224, 228
Specification chart,
lubricants ...........................226, 228
Speed control ..............................59
Starting your vehicle .......123–124,
126
jump starting ..........................159
Steering
speed sensitive .......................132
Steering wheel
controls ......................................62
tilting .........................................47
T
Tilt steering wheel ......................47
Tires ...........................153, 211–212
alignment ................................219
care ..........................................217
changing ..................153, 155, 159
checking the pressure ............217
label .........................................217
replacing ..................................222
rotating ....................................219
safety practices .......................222
sidewall information ...............213
snow tires and chains ............223
spare tire .................................154
terminology .............................212
tire grades ...............................212
treadwear ........................211, 221
Towing .......................................140
recreational towing .................143
trailer towing ..........................140
wrecker ....................................165
Traction control ........................130
Traction-lok rear axle ...............137
Transmission .............................133
Index
239
