2005 Mercury Grand Marquis fuel pump

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 toscheduled 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.
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 fill-ups or fuel gauge readings are
NOT accurate as a measure of fuel economy. We do not recommend taking
fuel economy measurements during the first 1,000 miles (1,600 km) of
driving (engine break-in period). You will get a more accurate
measurement after 2,000 miles-3,000 miles (3,000 km–5,000 km).
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.
2005 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA(fus)
Maintenance and Specifications
230

For consistent results when filling the fuel tank:
•Turn the engine/ignition switch to the off position prior to refueling,
an error in the reading will result if the engine is left running.
•Use the same filling rate setting (low — medium — high) each time
the tank is filled.
•Allow no more than two automatic click-offs when filling.
•Always use fuel with the recommended octane rating.
•Use a known quality gasoline, preferably a national brand.
•Use the same side of the same pump and have the vehicle facing the
same direction each time you fill up.
•Have the vehicle loading and distribution the same every time.
Your results will be most accurate if your filling method is consistent.
Calculating fuel economy
1. Fill the fuel tank completely and record the initial odometer reading
(in miles or kilometers).
2. Each time you fill the tank, record the amount of fuel added (in
gallons or liters).
3. After at least three to five tank fill-ups, fill the fuel tank and record
the current odometer reading.
4. Subtract your initial odometer reading from the current odometer
reading.
5. Follow one of the simple calculations in order to determine fuel
economy:
Calculation 1:Divide total miles traveled by total gallons used.
Calculation 2:Multiply liters used by 100, then divide by total
kilometers traveled.
Keep a record for at least one month and record the type of driving (city
or highway). This will provide an accurate estimate of the vehicle’s fuel
economy under current driving conditions. Additionally, keeping records
during summer and winter will show how temperature impacts fuel
economy. In general, lower temperatures give lower fuel economy.
Driving style — good driving and fuel economy habits
Give consideration to the lists that follow and you may be able to change
a number of variables and improve your fuel economy.
2005 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA(fus)
Maintenance and Specifications
231

F
Fail safe cooling ........................224
Floor mats ...................................77
Fluid capacities .........................241
Fuel ............................................225
calculating fuel
economy ............................55, 230
cap ...........................................227
capacity ...................................241
choosing the right fuel ...........228
comparisons with EPA fuel
economy estimates .................233
detergent in fuel .....................229
filling your vehicle with
fuel ...........................225, 227, 230
filter, specifications ........230, 240
fuel pump shut-off switch .....181
improving fuel economy ........230
octane rating ...................229, 244
quality ......................................229
running out of fuel .................229
safety information relating to
automotive fuels .....................225
Fuses ..................................182–183
G
Garage Door Opener (see
Homelink wireless control
system) ........................................68
Gas cap (see Fuel cap) ............227
Gas mileage (see Fuel
economy) ...................................230
Gauges .........................................15
H
Hazard flashers .........................181
Head restraints ...........................91Headlamps ...................................38
aiming ........................................40
autolamp system .......................38
bulb specifications ....................43
daytime running lights .............38
flash to pass ..............................39
high beam .................................39
replacing bulbs .........................44
turning on and off ....................38
Heating
heating and air conditioning
system .................................34–35
Homelink wireless control
system ..........................................68
Hood ..........................................212
I
Ignition ...............................163, 244
Infant seats (see Safety seats) 124
Inspection/maintenance (I/M)
testing ........................................235
Instrument panel
cleaning ...................................208
cluster ........................................10
lighting up panel and interior .39
J
Jack ............................................137
positioning ...............................137
storage .....................................137
Jump-starting your vehicle ......190
K
Keyless entry system .................86
autolock .....................................85
keypad .......................................86
programming entry code .........86
2005 Grand Marquis(grn)
Owners Guide (post-2002-fmt)
USA(fus)
Index
252