2008 Mercury Grand Marquis fuel pressure

1. Pull off the road as soon as safely possible and turn off the engine.
2. Arrange for the vehicle to be taken to an authorized dealer.
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. Re-start the engine and take your vehicle to an authorized dealer.
Driving the vehicle without repairing the engine problem
increases the chance of engine damage. Take your vehicle to an
authorized dealer as soon as possible.
FUEL FILTER
For fuel filter replacement, see your authorized dealer. Refer to
scheduled maintenance informationfor 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.
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.
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 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.
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5. Turn the filler cap clockwise 1/4 of a turn until it clicks at least once.
If the check fuel cap lamp
or a “check fuel cap” message comes on,
the fuel filler cap may not be properly installed. The lamp or message
can come on after several driving events after you’ve refueled your
vehicle.
At the next opportunity, safely pull off of the road, remove the fuel filler
cap, align the cap properly and reinstall it. The check fuel cap
lamp
or “check fuel cap” message may not reset immediately; it may
take several driving cycles for the check fuel cap lamp
or “check fuel
cap” message to turn off. A driving cycle consists of an engine start-up
(after four or more hours with the engine off) followed by city and
highway driving.
Continuing to drive with the check fuel cap lamp
or “check fuel cap”
message on may cause the
lamp to turn on as well.
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 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.
FFV (Flex Fuel Vehicle) Fuel Cap
If your vehicle is FFV capable it will have a yellow colored fuel cap.
Choosing the right fuel
If your vehicle is a flexible fuel vehicle (FFV), use only UNLEADED
FUEL and FUEL ETHANOL (Ed75–Ed85).
If your vehicle is not a flexible fuel vehicle (FFV), then only use
UNLEADED fuel or UNLEADED fuel blended with a maximum of 10%
ethanol. Your vehicle was not designed to run on E85 fuels that are
blended with a maximum of 85% ethanol. Do not use fuel containing
methanol. It can damage critical fuel system components.
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•Driving at reasonable speeds (traveling at 55 mph [88 km/h] uses 15%
less fuel than traveling at 65 mph [105 km/h]).
•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 the top gears 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 toMaintenance product
specifications and capacitiesin this chapter.
•Perform all regularly scheduled maintenance items. Follow the
recommended maintenance schedule and owner maintenance checks
found inscheduled maintenance information.
Conditions
•Heavily loading a vehicle or towing a trailer may reduce fuel economy
at any speed.
•Carrying unnecessary weight may reduce fuel economy (approximately
1 mpg [0.4 km/L] is lost for every 400 lb [180 kg] 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
8–10 miles (12–16 km) 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.
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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
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Owners Guide (post-2002-fmt)
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Index
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