2001 FORD MUSTANG catalytic converter

TheService Engine Soonindicator 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 Service Engine Soon
light illuminates
Light turns on solid:
This means that the OBD II system has detected a
malfunction.
Temporary malfunctions may cause yourService
Engine Soonlight 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, theService Engine Soonlight
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 theService Engine Soonlight remains on, have
your vehicle serviced at the first available opportunity.
Light is blinking:
Engine misfire is occurring which could damage your
catalytic converter. You should drive in a moderate
fashion (avoid heavy acceleration and deceleration)
and have your vehicle serviced at the first available
opportunity.
Instrumentation
10

Under engine misfire conditions, excessive
exhaust temperatures could damage the
catalytic converter, the fuel system, interior floor
coverings or other vehicle components, possibly
causing a fire.
Check fuel cap (if equipped)
Momentarily
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 theService Engine Soon/Check Engine
warning light. When the fuel filler cap is properly
re-installed, the light(s) will turn off after a period of
normal driving. This period will vary depending on
driving conditions.
It may take a long period of time for the
system to detect an improperly installed fuel
filler cap.
For more information, refer toFuel filler capin the
Maintenance and carechapter.
Low fuel
Illuminates as an early
reminder of a low fuel
condition indicated on
the fuel gauge (refer to
Fuel Gaugein this chapter for more information).
When refueling, after the light comes on, the amount
of fuel that is added will be less than the advertised
capacity since there is fuel still in the tank. The
ignition must be in the ON position for this lamp to
illuminate. The lamp will also illuminate for several
seconds after the ignition is turned to the ON
position regardless of the fuel level to ensure your
bulb is working.
CHECK
FUEL
CAP
LOW
FUEL
Instrumentation
11

To remove the
anti-theft lug nut:
1. Insert the key over
the locking lug nut. Make sure you hold the key
square to the lug nut. If you hold the key at an
angle, you could damage the key and the lug nut.
2. Place the lug nut wrench over the lug nut key and
apply pressure on the key with the wrench.
3. Turn the wrench in a counterclockwise direction
to remove the lug nut.
To install the anti-theft lug nut:
1. Insert the key over the locking lug nut.
2. Place the lug nut wrench over the lug nut key and
apply pressure on the key with the wrench.
3. Install the lug nut.
JUMP STARTING YOUR VEHICLE
The gases around the battery can explode if
exposed to flames, sparks, or lit cigarettes.
An explosion could result in injury or vehicle
damage.
Do not push start your vehicle. You could
damage the catalytic converter.
Batteries contain sulfuric acid which can
burn skin, eyes, and clothing, if contacted.
Do not attempt to push start your vehicle.
Automatic transmissions do not have
push-start capability.
Preparing your vehicle
When the battery is disconnected or a new battery is
installed, the transmission must relearn its adaptive
strategy. As a result of this, the transmission may
Roadside emergencies
141

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:
²Use only the specified fuel listed.
²Avoid running out of fuel.
²Do not turn off the ignition while your vehicle is
moving, especially at high speeds.
²Have 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.
Maintenance and care
190