1998 FORD MUSTANG fuel pressure

The parking brake is not recommended to stop a
moving vehicle. However, if the normal brakes fail,
the parking brake can be used to stop your vehicle
in an emergency. Since the parking brake applies
only the rear brakes, the vehicle's stopping distance
will increase greatly and the handling of your vehicle
will be adversely affected.
Always set the parking brake fully and make
sure that the gearshift is securely latched in
P (Park) (automatic transmission) or in 1 (First)
(manual transmission).
Your brake handle may
need to be pulled up
slightly to release
pressure before
pushing in the button.
Push the button on the
end of the parking
brake and push the handle down as far as possible
to release the brake. Driving with the parking brake
on will cause the brakes to wear out quickly and
reduce fuel economy.
TRACTION CONTROLY(IF EQUIPPED)
Your vehicle may be equipped with the optional
Traction Controlysystem. This system helps you
maintain the stability and steerability of your
vehicle. It is especially useful on slippery and/or hilly
road surfaces. The system operates by detecting and
controlling wheel spin. The system borrows many of
the electronic and mechanical elements already
present in the anti-lock braking system (ABS).
Wheel-speed sensors allow excess rear wheel spin to
be detected by the Traction Controlyportion of the
ABS computer. Any excessive wheel spin is
controlled by automatically applying and releasing
the rear brakes in conjunction with engine torque
reductions. Engine torque reduction is realized via
Driving
91

Fuse/Relay
LocationFuse Amp
RatingDescription
7 30A** Secondary Air Injection
(3.8L only)
8 50A** ABS Module
9 20A** Auxiliary Power Point
10 30A** Parklamps
11 30A** Rear Window Defrost
Control
12 40A** Power Windows, Power
Locks
13 Ð Not Used
14 20A* Fuel Pump
15 10A* Radio
16 20A* Horn
17 20A* Anti-Lock Brake System
18 25A* Power Seats
19 Ð Not Used
20 20A* Generator
21 Ð Not Used
22 Ð Not Used
23 Ð Not Used
24 20A*
A/C Pressure (3.8L only)
25 Ð Not Used
26 30A** PCM
27 20A** DRL Module, Foglamp
Relay
28 25A CB Convertible Top
* Mini Fuses ** Maxi Fuses
CHANGING THE TIRES
If you get a flat tire while driving, do not apply the
brake heavily. Instead, gradually decrease your
speed. Hold the steering wheel firmly and slowly
move to a safe place on the side of the road.
Roadside emergencies
115

Batteries normally produce explosive gases
which can cause personal injury. Therefore,
do not allow flames, sparks or lighted substances
to come near the battery. When working near the
battery, always shield your face and protect your
eyes. Always provide proper ventilation.
When lifting a plastic-cased battery,
excessive pressure on the end walls could
cause acid to flow through the vent caps, resulting
in personal injury and/or damage to the vehicle or
battery. Lift the battery with a battery carrier or
with your hands on opposite corners.
Keep batteries out of reach of children.
Batteries contain sulfuric acid. Avoid contact
with skin, eyes or clothing. Shield your eyes when
working near the battery to protect against
possible splashing of acid solution. In case of acid
contact with skin or eyes, flush immediately with
water for a minimum of 15 minutes and get
prompt medical attention. If acid is swallowed, call
a physician immediately.
Because your vehicle's engine is electronically
controlled by a computer, some control conditions
are maintained by power from the battery. When the
battery is disconnected or a new battery is installed,
the engine must relearn its idle and fuel trim
strategy for optimum driveability and performance.
To begin this process:
1. Set your parking brake.
2. Put the gearshift in P (Park) (automatic
transmission) or the neutral position (manual
transmission), turn off all accessories and start the
engine.
3. Let the engine idle for at least one minute.
Maintenance and care
147

²The suspension insulation and bumpers will help
prevent vehicle damage. Do not remove these
components from your vehicle when using snow
tires and chains.
WHAT YOU SHOULD KNOW ABOUT
AUTOMOTIVE FUELS
Important safety precautions
Do not overfill the fuel tank. The pressure in
an overfilled tank may cause leakage and
lead to fuel spray and fire.
If you do not use the proper fuel cap, the
pressure in the fuel tank can damage the
fuel system or cause it to work improperly in a
collision.
The fuel system may be under pressure. If
the fuel cap is venting vapor or if you hear a
hissing sound, wait until it stops before completely
removing the cap.
Automotive fuels can cause serious injury or
death if misused or mishandled.
Observe the following guidelines when handling
automotive fuel:
²Extinguish all
smoking materials
and any open flames
before fueling your
vehicle.
²Always turn off the
vehicle before
fueling.
Maintenance and care
154

2. Carefully turn the filler cap counterclockwise 1/8
of a turn until it stops.
3. Pull to remove the cap from the fuel filler pipe.
4. To install the cap, align the tabs on the cap with
the notches on the filler pipe.
5. Turn the filler cap clockwise 1/8 of a turn until it
stops.
If the ªService Engine Soon/Check Engineº indicator
comes on and stays on when you start the engine,
the fuel filler cap may not be properly installed.
Turn off the engine, remove the fuel filler cap and
reinstall it being careful to align the cap properly.
If you must replace the fuel filler cap, replace
it with a genuine Ford or Motorcraft part. The
customer warranty may be void for any damage
to the fuel tank or fuel system if a genuine
Ford or Motorcraft fuel filler cap is not used.
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,
the pressure in the fuel tank can damage
the fuel system or cause it to work improperly in a
collision.
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 gasolines containing methanol. It can
damage critical fuel systems components.
Vehicles certified to meet California emission
standards (indicated on the underhood Vehicle
Maintenance and care
156

²Combine errands and minimize stop-and-go
driving.
Maintenance
²Keep tires properly inflated and use only
recommended size.
²Operating a vehicle with the wheels out of
alignment will reduce fuel economy.
²Use recommended engine oil. Refer toLubricant
Specifications.
²Perform all regularly scheduled maintenance
items. Follow the recommended maintenance
schedule and owner maintenance checks found in
your vehicle Scheduled Maintenance Guide.
Conditions
²Heavily loading a vehicle or towing a trailer may
reduce fuel economy at any speed.
²Carrying unnecessary weight may reduce fuel
economy (approximately 2 km/h [1 mpg] is lost
for every 180 kg [400 lb] of weight carried).
²Adding certain accessories to your vehicle (for
example bug deflectors, rollover/light bars,
running boards, ski/luggage racks) may reduce
fuel economy.
²Use of fuel blended with alcohol may lower fuel
economy.
²Fuel economy may decrease with lower
temperatures during the first 12±16 km
(8±10 miles) of driving.
²Flat terrain driving improves fuel economy over
hilly roads.
²Transmissions give their best fuel economy when
operated in the top cruise gear and with steady
pressure on the gas pedal.
²Close windows for high speed driving.
Maintenance and care
162

windshield as described inCleaning the wiper
blades and windshield.
Repairing paint chips
Minor scratches or paint damage from road debris
may be repaired with touch-up paint, repair foil or
aerosol paint spray from the Ford accessory line.
Observe the application instructions on the
products.
Remove particles such as bird droppings, tree sap,
insect remains, tar spots, road salt and industrial
fallout immediately.
Cleaning the wheels
Wash with the same detergent as the body of your
vehicle. Do not use acid-based or alcohol-based
wheel cleaners, steel wool, fuel or strong detergents.
Never use abrasives that will damage the finish of
special wheel surfaces. Use a tar remover to remove
grease and tar.
Cleaning the engine
Engines are more efficient when they are clean
because grease and dirt buildup keep the engine
warmer than normal. When washing:
²Take care when using a power washer to clean
the engine. The high pressure fluid could
penetrate the sealed parts and cause damage.
²Do not spray with cold water to avoid cracking
the engine block or other engine components.
Maintenance and care
173

Fuel
choosing
the right fuel ......... 156
comparisons with EPA
fuel economy
estimates ............... 163
detergent in fuel ... 158
filling your vehicle
with fuel ......... 154,155
gauge ....................... 12
quality .................... 157
running
out of fuel ............. 158
safety information
relating to automotive
fuels ....................... 154
Fuses ................. 109,110
Gas mileage (see
Fuel economy) ........ 159
160,161,162
Gauges ....................... 12
engine coolant
temperature gauge . 13
engine oil pressure
gauge ....................... 15
Hazard flashers ....... 108
Head restraints ......... 63
Headlamps
aiming ............. 170,171
bulb
specifications ........ 170
high beam ............ 7,44
warning chime ........ 11
Heating ...................... 18
heating and air
conditioning
system ................ 18,20
Hood ........................ 128
Ignition ..................... 182
Inspection/maintenance
(I/M) testing ............ 164
Instrument panel ........ 6cleaning ................. 175
Keys
key in ignition
chime ....................... 11
positions of the
ignition .................... 45
removing from the
ignition .................. 101
Lamps
daytime
running light ........... 16
fog lamps ................. 52
headlamps ............... 16
headlamps, flash to
pass .......................... 44
instrument panel,
dimming ................... 17
interior
lamps ......... 49,169,170
replacing bulbs ..... 165
166,167,168,169
Lane change indicator
(see Turn signal) ...... 43
Lights, warning and
indicator
air bag ........................ 7
anti-lock brakes
(ABS) ...................... 10
anti-theft ................... 7
brake ........................ 10
charging system ........ 7
check coolant .......... 11
low fuel ...................... 9
overdrive off .............. 9
safety belt ................. 7
service engine soon .. 8
turn signal indicator . 6
Lumbar support,
seats ...................... 65,66
Manual transmission
reverse ................... 100
Index
187