2001 Mercury Grand Marquis octane

Check engine
Your vehicle is equipped with a
computer that monitors the engine's
emission control system. This
system is commonly known as the
On Board Diagnostics System (OBD
II). This OBD II system protects the environment by ensuring that your
vehicle continues to meet government emission standards. The OBD II
system also assists the service technician in properly servicing your
vehicle.
TheCheck Engineindicator light illuminates when the ignition is first
turned to the ON position to check the bulb. If it comes on after the
engine is started, one of the engine's emission control systems may be
malfunctioning. The light may illuminate without a driveability concern
being noted. The vehicle will usually be drivable and will not require
towing.
What you should do if the check engine light illuminates
Light turns on solid:
This means that the OBD II system has detected a malfunction.
Temporary malfunctions may cause yourCheck Enginelight to
illuminate. Examples are:
1. The vehicle has run out of fuel. (The engine may misfire or run
poorly.)
2. Poor fuel quality or water in the fuel.
3. The fuel cap may not have been properly installed and securely
tightened.
These temporary malfunctions can be corrected by filling the fuel tank
with high quality fuel of the recommended octane and/or properly
installing and securely tightening the gas cap. After three driving cycles
without these or any other temporary malfunctions present, theCheck
Enginelight should turn off. (A driving cycle consists of a cold engine
startup followed by mixed city/highway driving.) No additional vehicle
service is required.
If theCheck Enginelight remains on, have your vehicle serviced at the
first available opportunity.
CHECK
ENGINE
Instrumentation
9

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.
87(R+M)/2 METHOD
Maintenance and care
198

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
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 theInstrumentationchapter.
Maintenance and care
199

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.
²Have 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 kilometers or miles).
2. Each time you fill the tank, record the amount of fuel added (in liters
or gallons).
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:
Multiply liters used by 100, then divide by total kilometers
traveled.
Divide total miles traveled by total gallons used.
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 Ð 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.
Habits
²Smooth, moderate operation can yield up to 10% savings in fuel.
²
Steady speeds without stopping will usually give the best fuel economy.
²Idling for long periods of time (greater than one minute) may waste
fuel.
Maintenance and care
201

Item Ford part
nameFord part
numberFord
specification
Windshield
washer fluidUltra-clear
Windshield
Washer
ConcentrateC9AZ-19550-AC ESR-M17P5-A
1Use only brake fluids certified to meet Ford specifications. DOT 3 fluid
is recommended. However, if DOT 3 is not available, DOT 4 fluid can be
used.
2Add 118 ml (4 oz.) of Additive Friction Modifier C8AZ-19B546-A or
equivalent meeting Ford specification EST-M2C118-A for complete refill
of Traction-Lok rear axles.
3Ensure the correct automatic transmission fluid is used. Transmission
fluid requirements are indicated on the dipstick or on the dipstick
handle. MERCONtand MERCONtV are not interchangeable. DO NOT
mix MERCONtand MERCONtV. Refer to your scheduled maintenance
guide to determine the correct service interval.
ENGINE DATA
Engine 4.6L V8 engine
Cubic inches 281
Required fuel 87 octane
Firing order 1-3-7-2-6-5-4-8
Spark plug gap 1.3-1.4 mm (0.052-0.056 inch)
Ignition system Coil on plug
Compression ratio 9.4:1
Capacities and specifications
219

lubrication
specifications ..................218±219
refill capacities ........................216
service points ..........................170
starting after a collision .........150
Engine block heater .................132
Engine oil ..................................171
change oil soon warning,
message center .......................171
checking and adding ..............171
dipstick ....................................171
filter, specifications ........173, 216
recommendations ...................173
refill capacities ........................216
specifications ..................218±219
Exhaust fumes ..........................133
F
Fail safe cooling ........................180
Floor mats ...................................84
Fluid capacities .........................216
Fuel ............................................195
calculating fuel economy .......200
cap .....................................10, 197
capacity ...................................216
choosing the right fuel ...........198
comparisons with EPA fuel
economy estimates .................203
detergent in fuel .....................199
filling your vehicle
with fuel ..................195, 197, 200
filter, specifications ........200, 216
fuel filler door override ............80
fuel filler door release ..............80
fuel pump shut-off switch .....150
gauge .........................................17
improving fuel economy ........200
low fuel warning light ................8
octane rating ...........198, 219±220quality ......................................199
running out of fuel .................199
safety information relating to
automotive fuels .....................195
Fuses ..................................152±153
G
Garage door opener ....................74
Gas cap (see Fuel cap) ......10, 197
Gas mileage (see Fuel
economy) ...................................200
Gauges .........................................17
battery voltage gauge ...............21
engine coolant temperature
gauge .........................................20
engine oil pressure gauge ........22
fuel gauge ..................................17
odometer ...................................19
speedometer .............................18
trip odometer ............................20
GAWR (Gross Axle Weight
Rating) .......................................143
definition .................................143
driving with a heavy load ......143
location ....................................143
GVWR (Gross Vehicle Weight
Rating) .......................................143
calculating ...............................143
definition .................................143
driving with a heavy load ......143
location ....................................143
H
Hazard flashers .........................150
Head restraints ...........................98
Headlamps ...................................27
aiming ......................................210
Index
236

GVWR ......................................143
trailer towing ..........................143
Locks
autolock .....................................86
childproof ..................................83
doors ..........................................82
Lubricant specifications ...218±219
Lumbar support, seats .............102
M
Message center ...........................22
reset button ..............................23
select button .............................23
Mirrors
automatic dimming rearview
mirror ........................................78
cleaning ...................................212
side view mirrors (power) .......83
Motorcraft parts ................200, 216
O
Octane rating ............................198
Odometer .....................................19
Oil (see Engine oil) ..................171
Overdrive .............................68, 141
P
Panic alarm feature, remote
entry system ................................88
Parking brake ............................135
Parts (see Motorcraft parts) ....216
Passenger Occupant
Classification Sensor .................104
Pedals (see Power adjustable
foot pedals) .................................64Power distribution box
(see Fuses) ...............................155
Power door locks ..................82, 86
Power steering ..........................138
fluid, checking and adding ....183
fluid, refill capacity ................216
fluid, specifications .........218±219
R
Radio ............................................38
Rear window defroster ...............38
Relays ................................152, 157
Remote entry system ...........84, 88
illuminated entry ......................88
locking/unlocking doors ...........85
opening the trunk .....................87
panic alarm ...............................88
replacement/additional
transmitters ...............................89
replacing the batteries .............88
S
Safety belts (see Safety
restraints) ............16, 102, 106±110
Safety defects, reporting ..........233
Safety restraints ........102, 106±110
belt minder .............................112
cleaning the safety belts..115, 215
extension assembly ................111
for adults .........................107±109
for children .....................120±121
lap belt ....................................110
Occupant Classification
Sensor ......................................104
warning light and
chime ...................11, 16, 111±112
Safety seats for children ..........122
Index
238

Required fuel Unleaded fuel only - 87 octane
Fuel tank capacity 71.9L (19.0 gallons)
Engine oil capacity (includes filter
change)4.7L (5.0 quarts). Use Motorcraft
SAE 5W-20 Super Premium Motor
Oil, Ford specification
WSS-M2C153-H.
Tire pressure and size Refer to the Tire Pressure Label
located on the rear passenger door
jamb.
Hood release Pull handle under the left side of
the instrument panel.
Coolant capacity
115.0L (15.8 quarts)
Automatic transmission fluid
capacity
213.1L (13.9 quarts). Use
Motorcraft MERCONtV ATF.3
Power steering fluid capacity Fill to line on reservoir. Use
Motorcraft MERCONtAT F.
1Use either green-colored Motorcraft Premium Engine Coolant or
yellow-colored Motorcraft Premium Gold Engine Coolant. DO NOT USE
Ford Extended Life Engine Coolant (orange in color). Refer toAdding
engine coolant, in the Maintenance and Care chapter.
2Ensure the correct automatic transmission fluid is used. Transmission
fluid requirements are indicated on the dipstick or on the dipstick
handle. MERCONtand MERCONtV are not interchangeable. DO NOT
mix MERCONtand MERCONtV. Refer to your scheduled maintenance
guide to determine the correct service interval.
3Indicates only approximate dry-fill capacity. Some applications may vary
based on cooler size and if equipped with in-tank cooler. The amount of
transmission fluid and fluid level should be set by the indication on the
dipstick's normal operating range. Police and Handling Package refill
capacity-12.1L (12.8 quarts).
Filling station information
240