fuel pump Mercury Grand Marquis 2002 Owner's Manuals

Remember to pass on the Owner's Guide when reselling the
vehicle. It is an integral part of the vehicle.
Fuel pump shut-off switchIn the event of an accident the
safety switch will automatically cut off the fuel supply to the
engine. The switch can also be activated through sudden vibration (e.g.
collision when parking). To reset the switch, refer to theFuel pump
shut-off switchin theRoadside emergencieschapter.
SAFETY AND ENVIRONMENT PROTECTION
Warning symbols in this guide
How can you reduce the risk of personal injury and prevent possible
damage to others, your vehicle and its equipment? In this guide, answers
to such questions are contained in comments highlighted by the warning
triangle symbol. These comments should be read and observed.
Warning symbols on your vehicle
When you see this symbol, it is
imperative that you consult the
relevant section of this guide before
touching or attempting adjustment
of any kind.
Introduction
5

These are some of the symbols you may see on your vehicle.
Vehicle Symbol Glossary
Safety Alert
See Owner's Guide
Fasten Safety BeltAir Bag-Front
Air Bag-SideChild Seat
Child Seat Installation
WarningChild Seat Tether
Anchorage
Brake SystemAnti-Lock Brake System
Brake Fluid -
Non-Petroleum BasedTraction Control
Master Lighting SwitchHazard Warning Flasher
Fog Lamps-FrontFuse Compartment
Fuel Pump ResetWindshield Wash/Wipe
Windshield
Defrost/DemistRear Window
Defrost/Demist
Power Windows
Front/RearPower Window Lockout
Introduction
8

AVG FUEL ECONOMY (average fuel economy)
Select this function to display your
average fuel economy in liters/100
km or miles/gallon.
If you calculate your average fuel
economy by dividing miles traveled by gallons used, your figure may be
different than displayed for the following reasons:
²your vehicle was not perfectly level during fill-up
²differences in the automatic shut-off points on the fuel pumps at
service stations
²variations in top-off procedure from one fill-up to another
²rounding of the displayed values to the nearest 0.1 liter (gallons)
Press the RESET control while AVG
ECON is displayed to reset the
function.
The average displayed is the average
since the last reset.
TRIP
ATRIP
BAVG
SPEED
DISTANCE
TO EMPTYAVG FUEL
ECONOMY
RESET E/M SELECT
Driver Controls
87

FUEL PUMP SHUT-OFF SWITCHFUEL
RESET
The fuel pump shut-off switch is a device intended to stop the electric
fuel pump when your vehicle has been involved in a substantial jolt.
After a collision, if the engine cranks but does not start, the fuel pump
shut-off switch may have been activated.
The fuel pump shut-off switch is
located on the left side of the trunk
behind the left rear tail light and the
trunk liner.
Use the following procedure to reset the fuel pump shut-off switch.
1. Turn the ignition to the OFF position.
2. Check the fuel system for leaks.
3. If no fuel leak is apparent, reset the fuel pump shut-off switch by
pushing in on the reset button.
4. Turn the ignition to the ON position. Pause for a few seconds and
return the key to the OFF position.
5. Make a further check for leaks in the fuel system.
Roadside Emergencies
160

The high-current fuses are coded as follows.
Fuse/Relay
LocationFuse Amp
RatingPower Distribution Box
Description
1 20A* Electric Fuel Pump Relay
2 30A* Generator, Starter Relay, Fuses 15
and 18
3 25A* Radio, CD Changer, Subwoofer
Amplifier
4 Ð Not Used
5 15A* Horn Relay
6 20A* DRL Module
7 20A CB Power Door Locks, Power Seats,
Trunk Lid Release
8 30A** Air Suspension System
9 50A** See Fuses 5 and 9
1
2
3
4
5
6
7
89
10
11
12
13
14
15
16
17RELAY
1
RELAY
2
RELAY
3
RELAY
4
Roadside Emergencies
165

The flow of fuel through a fuel pump nozzle can produce static
electricity, which can cause a fire if fuel is pumped into an
ungrounded fuel container.
Use the following guidelines to avoid static build-up when filling an
ungrounded fuel container:
²Place approved fuel container on the ground.
²DO NOT fill a fuel container while it is in the vehicle (including the
cargo area).
²Keep the fuel pump nozzle in contact with the fuel container while
filling.
²DO NOT use a device that would hold the fuel pump handle in the fill
position.
Fuel Filler Cap
Your fuel tank filler cap has an indexed design with a 1/8 turn on/off
feature.
When fueling your vehicle:
1. Turn the engine off.
2. Carefully turn the filler cap counterclockwise 1/8 of a turn until it
stops.
3. Pull to remove the cap from the fuel filler pipe.
4. To install the cap, align the tabs on the cap with the notches on the
filler pipe.
5. Turn the filler cap clockwise 1/8 of a turn until it stops.
ªCheck Fuel Capº illuminates when the ignition is turned to the ON
position to ensure your bulb is working. When this light turns on, check
the fuel filler cap. Continuing to operate the vehicle with the Check Fuel
Cap light on, can activate the Service Engine Soon warning. When the
fuel filler cap is properly re-installed, the light(s) will turn off after a
period of normal driving.It may take a long period of time for the
system to detect an improperly installed fuel filler cap.
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.
Maintenance and Specifications
212

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
ªRegularº unleaded gasoline with
pump (R+M)/2 octane rating of 87.
We do not recommend the use of
gasolines labeled as ªRegularº 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.
Fuel quality
If you are experiencing starting, rough idle or hesitation driveability
problems during a cold start, try a different brand of ªRegularº unleaded
gasoline. ªPremiumº unleaded gasoline is not recommended (particularly
in the United States) because it may cause these problems to become
87(R+M)/2 METHOD
Maintenance and Specifications
213

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. In Canada,
look for fuels that display theAuto Makers' Choiceylogo.
Cleaner air
Ford endorses the use of reformulated ªcleaner-burningº 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:
²You 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.
²Your ªCheck Engineº indicator may come on. For more information on
the ªCheck Engineº 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.
Maintenance and Specifications
214

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.
ESSENTIALS OF GOOD FUEL ECONOMY
Measuring techniques
Your best source of information about actual fuel economy is you, the
driver. You must gather information as accurately and consistently as
possible. Fuel expense, frequency of fillups or fuel gauge readings are
NOT accurate as a measure of fuel economy. We do not recommend
taking fuel economy measurements during the first 1 600 km (1 000 miles)
of driving (engine break-in period). You will get a more accurate
measurement after 3 000 km±5 000 km (2 000 miles-3 000 miles).
Filling the tank
The advertised fuel capacity of the fuel tank on your vehicle is equal to
the rated refill capacity of the fuel tank as listed in theRefill capacities
section of this chapter.
The advertised capacity is the amount of the indicated capacity and the
empty reserve combined. Indicated capacity is the difference in the
amount of fuel in a full tank and a tank when the fuel gauge indicates
empty. Empty reserve is the small amount of fuel remaining in the fuel
tank after the fuel gauge indicates empty.
The amount of usable fuel in the empty reserve varies and should
not be relied upon to increase driving range. When refueling your
vehicle after the fuel gauge indicates empty, you might not be
able to refuel the full amount of the advertised capacity of the
fuel tank due to the empty reserve still present in the tank.
For consistent results when filling the fuel tank:
²Turn the engine/ignition switch to the off position prior to refueling,
an error in the reading will result if the engine is left running.
²Use the same filling rate setting (low Ð medium Ð high) each time
the tank is filled.
²Allow no more than 2 automatic click-offs when filling.
²Always use fuel with the recommended octane rating.
²Use a known quality gasoline, preferably a national brand.
²Use the same side of the same pump and have the vehicle facing the
same direction each time you fill up.
Maintenance and Specifications
215

Engine oil ..................................197
change oil soon warning,
message center .......................197
checking and adding ..............197
dipstick ....................................197
filter, specifications ........199, 230
recommendations ...................199
refill capacities ........................230
specifications ..................232±233
Exhaust fumes ..........................142
F
Fail safe cooling ........................207
Floor mats ...................................91
Fluid capacities .........................230
Fuel ............................................210
calculating fuel economy .......215
cap .....................................12, 212
capacity ...................................230
choosing the right fuel ...........213
comparisons with EPA fuel
economy estimates .................218
detergent in fuel .....................214
filling your vehicle
with fuel ..................210, 212, 215
filter, specifications ........214, 230
fuel filler door override ............90
fuel filler door release ..............90
fuel pump shut-off switch .....160
gauge .........................................20
improving fuel economy ........215
low fuel warning light ..............14
octane rating ...........213, 233±234
quality ......................................213
running out of fuel .................214
safety information relating to
automotive fuels .....................210
Fuses ..................................161±162G
Garage door opener ....................80
Gas cap (see Fuel cap) ......12, 212
Gas mileage (see Fuel
economy) ...................................215
Gauges .........................................17
battery voltage gauge ...............19
engine coolant temperature
gauge .........................................18
engine oil pressure gauge ........19
fuel gauge ..................................20
odometer ...................................21
speedometer .............................21
trip odometer ............................22
GAWR (Gross Axle Weight
Rating) .......................................153
definition .................................153
driving with a heavy load ......153
location ....................................153
GVWR (Gross Vehicle Weight
Rating) .......................................153
calculating ...............................153
definition .................................153
driving with a heavy load ......153
location ....................................153
H
Hazard flashers .........................159
Head restraints .........................106
Headlamps ...................................59
aiming ........................................61
autolamp system .......................59
bulb specifications ....................62
daytime running lights .............60
flash to pass ..............................60
high beam ...........................15, 60
replacing bulbs .........................63
Index
242