2003 FORD TAURUS engine

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 unleaded fuel (or E85, if equipped with the 3.0L FFV V6
engine).
•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 service of components affecting
emission control, such non-Ford parts should be equivalent to genuine
Ford Motor Company parts in performance and durability.
Do not park, idle, or drive your vehicle in dry grass or other dry
ground cover. The emission system heats up the engine
compartment and exhaust system, which can start a fire.
Illumination of the
indicator, charging system warning light or the
temperature warning light, fluid leaks, strange odors, smoke or loss of
engine power, could indicate that the emission control system is not
working properly.
Exhaust leaks may result in entry of harmful and potentially
lethal fumes into the passenger compartment.
Do not make any unauthorized changes to your vehicle or engine. By
law, vehicle owners and anyone who manufactures, repairs, services,
sells, leases, trades vehicles, or supervises a fleet of vehicles are not
permitted to intentionally remove an emission control device or prevent
it from working. Information about your vehicle’s emission system is on
the Vehicle Emission Control Information Decal located on or near the
engine. This decal identifies engine displacement and gives some tune up
specifications.
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190

Please consult your“Warranty Guide”for complete emission warranty
information.
Readiness for Inspection/Maintenance (I/M) testing
In some localities, it may be a legal requirement to pass an I/M test of
the on-board diagnostics system. If your
indicator is on, refer to the
description in theWarning lights and chimessection of the
Instrument Clusterchapter. Your vehicle may not pass the I/M test with
the
indicator on.
If the vehicle’s powertrain system or its battery has just been serviced,
the on-board diagnostics system is reset to a“not ready for I/M test”
condition. To ready the on-board diagnostics system for I/M testing, a
minimum of 30 minutes of city and highway driving is necessary as
described below:
•First, at least 10 minutes of driving on an expressway or highway.
•Next, at least 20 minutes driving in stop-and-go, city-type traffic with
at least four idle periods.
Allow the vehicle to sit for at least eight hours without starting the
engine. Then, start the engine and complete the above driving cycle. The
engine must warm up to its normal operating temperature. Once started,
do not turn off the engine until the above driving cycle is complete.
CHECKING AND ADDING POWER STEERING FLUID
Check the power steering fluid.
Refer to the scheduled maintenance
guide for the service interval
schedules. If adding fluid is
necessary, use only MERCONAT F.
1. Start the engine and let it run until it reaches normal operating
temperature (the engine coolant temperature gauge indicator will be
near the center of the normal area between H and C).
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191

2. While the engine idles, turn the steering wheel left and right several
times.
3. Turn the engine off.
3.0L V6 Vulcan engine
4. Check the fluid level on the
dipstick. It should be between the
arrows in the FULL HOT range. Do
not add fluid if the level is within
this range.
5. If the fluid is low, add fluid in small amounts, continuously checking
the level until it reaches the FULL HOT range. Be sure to put the
dipstick back in the reservoir.
3.0L DOHC V6 Duratec engine
4. Check the fluid level in the
reservoir. It should be between the
MIN and MAX lines. Do not add
fluid if the level is within this range.
5. If the fluid is low, add fluid in small amounts, continuously checking
the level until it reaches the range between the MIN and MAX lines. Be
sure to put the cap back on the reservoir.
FULL HOT
MINMAX
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192

BRAKE FLUID RESERVOIR
The fluid level will drop slowly as
the brakes wear, and will rise when
the brake components are replaced.
Fluid levels below the“MAX”line
that do not trigger the brake system
warning lamp are within the normal
operating range, there is no need to
add fluid. If the fluid levels are outside of the normal operating range,
the performance of your brake system could be compromised, seek
service from your dealer immediately.
TRANSMISSION FLUID
Checking automatic transmission fluid
Refer to your scheduled maintenance guide for scheduled intervals for
fluid checks and changes. Your transaxle does not consume fluid.
However, the fluid level should be checked if the transaxle is not working
properly, i.e., if the transaxle slips or shifts slowly or if you notice some
sign of fluid leakage.
Automatic transmission fluid expands when warmed. To obtain an
accurate fluid check, drive the vehicle until it is warmed up
(approximately 30 km [20 miles]). If your vehicle has been
operated for an extended period at high speeds, in city traffic
during hot weather or pulling a trailer, the vehicle should be
turned off for about 30 minutes to allow fluid to cool before
checking.
1. Drive the vehicle 30 km (20 miles) or until it reaches normal operating
temperature.
2. Park the vehicle on a level surface and engage the parking brake.
3. With the parking brake engaged and your foot on the brake pedal,
start the engine and move the gearshift lever through all of the gear
ranges. Allow sufficient time for each gear to engage.
4. Latch the gearshift lever in P (Park) and leave the engine running.
5. Remove the dipstick, wiping it clean with a clean, dry lint free rag. If
necessary, refer toIdentifying components in the engine compartment
in this chapter for the location of the dipstick.
6. Install the dipstick making sure it is fully seated in the filler tube.
7. Remove the dipstick and inspect the fluid level. The fluid should be in
the designated areas for normal operating temperature.
MAX
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193

MOTORCRAFT PART NUMBERS
Component 3.0L V6 Vulcan
engine3.0L FFV V6
engine3.0L DOHC V6
Duratec engine
Air filter
element
1FA-1683 FA-1683 FA-1683
Fuel filter FG-1006 FG-1006 FG-1006
Battery
(standard)BXT-36R BXT-36R BXT-36R
Battery
(optional)BXT-36R N/A N/A
Oil filter FL-400-S FL-400-S FL-820-S
PCV valve EV-228 EV-228 EV-243
Spark plugs
2AWSF-32PP3AGSF-22PP3AWSF-32F
1Do not use oil-impregnated air filter elements. Failure to use the correct
air filter element may result in severe engine damage. The customer
warranty may be voided for any damage to the engine if the correct air
filter element is not used.
2Refer to Vehicle Emissions Control Information (VECI) decal for spark
plug gap information.
3If a spark plug is to be 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 service part number suffix letter as shown on the engine
decal.
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199

REFILL CAPACITIES
Fluid Ford Part
NameApplication Capacity
Brake fluid Motorcraft
High
Performance
DOT 3 Motor
Vehicle Brake
FluidAll Fill to line on
reservoir
Engine
coolant
1Motorcraft
Premium
Engine Coolant
(green-colored)
orMotorcraft
Premium Gold
Engine Coolant
(yellow-colored)3.0L V6 Vulcan
engine11.0L (11.6
quarts)
3.0L V6 Duratec
engine10.0L (10.6
quarts)
Engine oil
(includes filter
change)Motorcraft SAE
5W-20
Premium
Synthetic
Blend Motor
Oil3.0L V6 Vulcan
engine4.25L (4.5 quarts)
3.0L V6 Duratec
engine5.2L (5.5 quarts)
Fuel tank
capacityN/A All vehicles 68.1L (18.0
gallons)
Power steering
fluidMotorcraft
MERCON
AT F3.0L V6 Vulcan
engineFill to line on
dipstickFill to line
on reservoir
3.0L V6 Duratec
engineFill to line on
reservoir
Automatic
transaxle -
4F50NMotorcraft
MERCONV
AT F3.0L V6 Vulcan
engine12.8L (13.5
quarts)
3.0L V6 Duratec
engine12.7L (13.4
quarts)
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200

Fluid Ford Part
NameApplication Capacity
Automatic
transaxle -
AX4SMotorcraft
MERCONV
AT F3.0L V6 Vulcan
engine11.6L (12.2
quarts)
Windshield
washer fluid -
FrontMotorcraft
Premium
Windshield
Washer
ConcentrateAll 2.8L (94.7 oz.)
Windshield
washer fluid -
RearMotorcraft
Premium
Windshield
Washer
ConcentrateWagon 1.8L (60.9 oz.)
1Add the coolant type originally equipped in your vehicle.
LUBRICANT SPECIFICATIONS
ItemsFord Part
Name or
equivalentFord Part
NumberFord
Specification
Brake fluid Motorcraft High
Performance
DOT 3 Motor
Vehicle Brake
FluidPM-1 ESA-M6C25-A
and DOT 3
Door latch, hood
latch, auxiliary
hood latch, seat
tracks, trunk
and liftgate
latchesMulti-Purpose
GreaseXG-4 or XL-5 ESR-M1C159-A
or
ESA-M1C93-B
Lock cylinders Penetrating and
Lock LubricantMotorcraft XL-1 none
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201

ItemsFord Part
Name or
equivalentFord Part
NumberFord
Specification
Automatic
transaxle (AX4S
and 4F50N
1)Motorcraft
MERCONV
AT FXT-5-QM
MERCONV
Engine oil Motorcraft SAE
5W-20 Premium
Synthetic Blend
Motor OilXO-5W20-QSP WSS-M2C153-H
and API
Certification
Mark
Constant
velocity jointsCV Joint Grease
(High Temp.)XG-5 WSS-M2C258–A1
Engine coolant Motorcraft
Premium Engine
Coolant
(green-colored)VC-4–A (US) or
CXC-10
(Canada)ESE-M97B44-A
Motorcraft
Premium Gold
Engine Coolant
(yellow-colored)VC-7–A WSS
-M97B51–A1
Power steering
fluidMotorcraft
MERCONAT FXT-2-QDX MERCON
Windshield
washer fluidMotorcrarft
Premium
Windshield
Washer
ConcentrateZC-32–A WSB-M8B16–A2
1Ensure the correct automatic transmission fluid is used. Transmission
fluid requirements are indicated on the dipstick or on the dipstick
handle. Check the container to verify the fluid being added is of the
correct type. Refer to your scheduled maintenance guide to determine
the correct service interval.
Some transmission fluids may be labeled as dual usage, such as
MERCONand MERCONV. These dual usage fluids are not to be used
in an automatic transmission that requires use of the MERCONtype
fluid. However, these dual usage fluids may be used in transmissions that
require the MERCONV type fluid.
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202