fuel FORD MUSTANG 2003 4.G Service Manual

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:
•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 2 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 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.
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220

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—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
•Smooth, moderate operation can yield up to 10%
savings in fuel.
•Steady speeds without stopping will usually give
the best fuel economy.
•Idling for long periods of time (greater than one
minute) may waste fuel.
•Anticipate stopping; slowing down may eliminate
the need to stop.
•Sudden or hard accelerations may reduce fuel
economy.
•Slow down gradually.
•Driving at reasonable speeds (traveling at 88 km/h
[55 mph] uses 15% less fuel than traveling at 105
km/h [65 mph]).
•Revving the engine before turning it off may
reduce fuel economy.
Maintenance and Specifications
221

•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 third
and fourth gear 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 toLubricant
specificationsin this chapter.
•Perform all regularly scheduled maintenance
items. Follow the recommended maintenance
schedule and owner maintenance checks found in
your vehicle scheduled maintenance guide.
Conditions
•Heavily loading a vehicle or towing a trailer may
reduce fuel economy at any speed.
•Carrying unnecessary weight may reduce fuel
economy (approximately 0.4 km/L [1 mpg] is lost
for every 180 kg [400 lb] 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 12–16 km (8–10
miles) of driving.
Maintenance and Specifications
222

•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.
•Close windows for high speed driving.
EPA window sticker
Every new vehicle should have the EPA window
sticker. Contact your dealer if the window sticker is
not supplied with your vehicle. The EPA window
sticker should be your guide for the fuel economy
comparisons with other vehicles.
It is important to note the box in the lower left
corner of the window sticker. These numbers
represent the Range of L/100 km (MPG) expected
on the vehicle under optimum conditions. Your fuel
economy may vary depending upon the method of
operation and conditions.
EMISSION CONTROL SYSTEM
Your vehicle is equipped with various emission
control components and a catalytic converter which
will enable your vehicle to comply with applicable
exhaust emission standards. To make sure that the
catalytic converter and other emission control
components continue to work properly:
•Use only the specified fuel listed.
•Avoid running out of fuel.
•Do not turn off the ignition while your vehicle is
moving, especially at high speeds.
•Have the items listed in your scheduled
maintenance guide performed according to the
specified schedule.
The scheduled maintenance items listed in the
scheduled maintenance guide are essential to the life
and performance of your vehicle and to its emissions
system.
If other than Ford, Motorcraft or Ford-authorized
parts are used for maintenance replacements or for
Maintenance and Specifications
223

Failure to follow these precautions may
adversely affect the handling of the vehicle
and make it easier for the driver to lose control
and roll over.
Tires that are larger or smaller than your vehicle’s
original tires may also affect the accuracy of your
speedometer.
SNOW TIRES AND CHAINS
Driving too fast for conditions creates the
possibility of loss of vehicle control. Driving
at very high speeds for extended periods of time
may result in damage to vehicle components.
Snow tires must be the same size and grade
as the tires you currently have on your
vehicle.
The tires on your vehicle have all weather treads to
provide traction in rain and snow. However, in some
climates, you may need to use snow tires and
chains. Use chains on the tires only in an emergency
or if the law requires them.
Follow these guidelines when using snow tires and
chains:
•Chains may damage aluminum wheels.
•Use only Cable Type chains with size P225/55R16
or 245/45ZR17 tires. Use of SAE Class S chains
may damage your vehicle.
•SAE Class S chains may be used on P205/65R15
tires.
•Install chains securely, verifying that the chains do
not touch any wiring, brake lines or fuel lines.
•Drive cautiously. If you hear the chains rub or
bang against your vehicle, stop and re-tighten the
chains. If this does not work, remove the chains
to prevent damage to your vehicle.
Maintenance and Specifications
236

•If possible, avoid fully loading your vehicle.
•Remove the tire chains when they are no longer
needed. Do not use tire chains on dry roads.
•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 3.8L OHV V6
engine4.6L SOHC V8
engine
Air filter element FA-1611 FA-1634
Fuel filter FG-986 FG-986B
Battery BXT-59 BXT-59
Oil filter FL-400S FL-820S
PCV valve EV-152 EV-98
Spark plugs* AWSF-42EE** AWSF-32P
* Refer to Vehicle Emissions Control Information
(VECI) decal for spark plug gap information.
**If a spark plug is removed for inspection, it must
be reinstalled in the same cylinder. If a spark plug
needs to be replaced, use only spark plugs with the
same service part number suffix letter as shown on
the engine decal.
Maintenance and Specifications
237

Fluid Ford Part
NameApplication Capacity
Rear axle
lubricant
2Motorcraft
SAE 80W-90
Premium
Rear Axle
Lubricant7 .5 inch axle 1.5L (3.25
pints)
Motorcraft
SAE 75W-140
Synthetic
Rear Axle
Lubricant8.8 inch axle 2.0L (4.25
pints)
Fuel tank N/A All 59.4L (15.7
gallons)
Transmission
fluid
3Motorcraft
MERCONV
AT FAutomatic
with 3.8L
OHV V6
engine13.1L (13.9
quarts)4
Automatic
with 4.6L
SOHC V8
engine12.0L (12.8
quarts)4
Motorcraft
MERCON
AT FManual with
3.8L OHV V6
engine2.6L (5.6
pints)5
Synthetic
MERCON
AT FManual with
4.6L SOHC
V8 engine3.8L (8.0
pints)5
Windshield
washer fluidUltra-Clear
Windshield
Washer
ConcentrateAll 3.8L (4.0
quarts)
1Add the coolant type originally equipped in your
vehicle.
2Rear axle lubricants do not need to be checked or
changed unless a leak is suspected, service is
required or the axle assembly has been submerged
in water. The axle lubricant should be changed any
time the rear axle has been submerged in water. Fill
6 mm to 14 mm (1/4 inch to 9/16 inch) below
bottom of fill hole. Add 118 ml (4 oz.) of Additive
Friction Modifier C8AZ-19B546-A or equivalent
Maintenance and Specifications
239

meeting Ford specification EST-M2C118–Afor
complete refill of Traction-Lok axles.
3Ensure the correct automatic transmission fluid is
used. Transmission fluid requirements are indicated
on the dipstick or on the dipstick handle. MERCON
and MERCONV are not interchangeable. DO NOT
mix MERCONand MERCONV. Refer to your
scheduled maintenance guide to determine the
correct service interval.
4Indicates only approximate dry-fill capacity. Some
applications may vary based on cooler size and if
equipped with an in-tank cooler. The amount of
transmission fluid and fluid level should be set by
the indication on the dipstick’s normal operating
range.
5Service refill capacity is determined by filling the
transmission to the bottom of the filler hole with the
vehicle on a level surface.
LUBRICANT SPECIFICATIONS
Item Ford part
nameFord part
numberFord
specification
Brake fluid Motorcraft
High
Performance
DOT 3 Motor
Vehicle Brake
FluidPM-1 ESA-M6C25-A
and DOT 3
Door
weatherstripsSilicone
Lubricant
F7AZ-19G208-BA
and
F5AZ-19553-AAESR-M13P4-A
Door latch,
hood latch,
auxiliary hood
latch, door
hinges, striker
plates, seat
tracks and fuel
filler door
hingeMulti-Purpose
Grease
XG-4or
F5AZ-19G209-AAESR-M1C159-A
Maintenance and Specifications
240

1Add 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 axles.
Ford design rear axles contain a synthetic lubricant
that does not require changing unless the axle has
been submerged in water.
2Ensure the correct automatic transmission fluid is
used. Transmission fluid requirements are indicated
on the dipstick or on the dipstick handle. MERCON
and MERCONV are not interchangeable. DO NOT
mix MERCONand MERCONV. Refer to your
scheduled maintenance guide to determine the
correct service interval.
ENGINE DATA
Engine 3.8L OHV V6
engine4.6L SOHC V8
engine
Cubic inches 232 281
Required fuel 87 octane 87 octane
Firing order 1-4-2-5-3-6 1-3-7-2-6-5-4-8
Spark plug gap 1.3-1.4 mm
(0.052-00.056
inch)1.3-1.4 mm
(0.052-00.056
inch)
Ignition system EDIS Coil on plug
Compression ratio 9.4:1 9.4:1
VEHICLE DIMENSIONS
Vehicle
dimensionsCoupe mm (in) Convertible mm
(in)
(1) Overall length 4653.3 (183.2) 4653.3 (183.2)
(2) Overall width 1856.7 (73.1) 1856.7 (73.1)
(3) Overall height 1348.7 (53.1) 1351.3 (53.2)
(4) Wheelbase 2573.0 (101.3) 2573.0 (101.3)
(5) Track - Front 1534.2 (60.4)
11534.2 (60.4)1
(5) Track - Rear 1539.2 (60.6)21539.2 (60.6)2
11521.5 mm (59.9 in) for Mustang GT
21526.5 mm (60.1 in) for Mustang GT
Maintenance and Specifications
242

D
Daytime running lamps
(see Lamps) .............. 67
Defrost
rear window ............ 66
Dipstick
automatic
transmission
fluid ........................ 228
engine oil ............... 199
Doors
lubricant
specifications ........ 240
Driving under
special conditions
through water ....... 153
E
Emergencies, roadside
jump-starting ........ 170
Emission control
system ...................... 223
Engine ...................... 242
check engine/service
engine soon light .... 11
cleaning ................. 188
coolant ................... 206
idle speed control.... 203
lubrication
specifications... 240, 242
refill capacities ...... 238
service
points ............. 197–198
starting after
a collision .............. 159
Engine block
heater ....................... 137
Engine oil ................ 199checking and
adding .................... 199
dipstick .................. 199
filter,
specifications... 202, 237
recommendations.... 202
refill capacities ...... 238
specifications... 240, 242
Exhaust fumes ........ 137
F
Floor mats ................. 85
Fluid capacities ....... 238
Foglamps ................... 67
Fuel .......................... 214
calculating fuel
economy ................ 219
cap ................... 12, 216
capacity ................. 238
choosing the
right fuel ................ 217
comparisons with
EPA fuel economy
estimates ............... 223
detergent in fuel ... 218
filling your
vehicle with
fuel ......... 214, 216, 219
filter,
specifications... 219, 237
fuel pump shut-off
switch .................... 159
gauge ....................... 16
improving fuel
economy ................ 219
low fuel warning
light .......................... 13
octane
rating ............. 217, 242
quality .................... 218
Index
250