1998 Mercury Mountaineer check engine

WARNING LIGHTS AND CHIMES
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.
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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 good quality fuel 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.
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
Instrumentation
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Brake system warning
Momentarily illuminates when the
ignition is turned ONand the
engine is off. Also illuminates when
the parking brake is engaged.
Illumination after releasing the
parking brake indicates low brake
fluid level.
Anti-lock brake system (ABS)
Momentarily illuminates when the
ignition is turned on and the
engine is off. If the light remains
on, continues to flash or fails to
illuminate, have the system
serviced immediately.
Turn signal
Illuminates when the left or right
turn signal or the hazard lights are
turned on. If one or both of the
indicators stay on continuously,
check for a burned-out turn signal
bulb. Refer toExterior bulbsin
theMaintenance and care
chapter.
High beams
Illuminates when the high beam
headlamps are turned on.
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BRAKE
ABS
Instrumentation
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Anti-theft system (if equipped)
Refer toAnti-theft systemin the
Controls and featureschapter.
Charging system
Momentarily illuminates when the
ignition is turned ON and the
engine is off. The light also
illuminates when the battery is not
charging properly, requiring
electrical system service.
Check gage
Illuminates when the key is in the
ON position and the engine coolant
temperature is high, the engine oil
pressure is low or the fuel level is
near empty. Refer toEngine
coolant temperature gauge,
Engine oil pressure gaugeor
Fuel gaugein this chapter for
more information.
Door ajar
Illuminates when the ignition
switch is in the ON or START
position and any door is open.
THEFT
CHECK
GAGE
DOOR
AJAR
Instrumentation
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Key-in-ignition warning chime
Sounds when the key is left in the
ignition in the OFF/LOCK or ACC
position and the driver's door is
opened.
Headlamps on warning chime
Sounds when the headlamps or
parking lamps are on, the ignition
is off (and the key is not in the
ignition) and the driver's door is
opened.
GAUGES
Speedometer
Indicates the current vehicle
speed.
C
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RPMx1000
ABS
CHECK
ENGINE
FUEL
RESET
EFH
H
H
PRN D 2 1THEFT
SPEED
CONT
4WD
HIGH
4WD
LOW
O/D
OFFL
L
10MPH 205060
70
304080
90
km/h
0 0 0
10 100
1
20
1
0 0 0 0 0 0406080100
120
140
160
180
20
DOOR
AJAR
CHECK
GAGE
!BRAKE
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70
304080
90
km/h
0 0 0
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160
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Instrumentation
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Trip odometer
Registers the kilometers (miles) of
individual journeys. To reset,
depress the control.
Tachometer
Indicates the engine speed in
revolutions per minute.
Driving with your tachometer
pointer in the red zone may
damage the engine.
Battery voltage gauge
This gauge shows the battery
voltage when the ignition is in the
ON position. If the pointer moves
and stays outside the normal
operating range (as indicated),
have the vehicle's electrical system
checked as soon as possible.
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Engine oil pressure gauge
This shows the engine oil pressure
in the system. Sufficient pressure
exists as long as the needle
remains in the normal range (the
area between the ªHº and ªLº).
If the gauge indicates low
pressure, switch off the engine
immediately. Check the oil level.
Add oil if needed (refer to
Checking and adding engine oil
in theMaintenance and care
chapter). If the oil level is correct,
have your vehicle checked at your
dealership or by a qualified
technician.
Fuel gauge
Displays approximately how much
fuel is in the fuel tank (when the
key is in the ON position). The
fuel gauge may vary slightly when
the vehicle is in motion. The
ignition should be in the OFF
position while the vehicle is being
refueled. When the gauge first
indicates empty, there is a small
amount of reserve fuel in the tank.
When refueling the vehicle from
empty indication, the amount of
fuel that can be added will be less
than the advertised capacity due to
the reserve fuel.
The FUEL DOOR icon and arrow
indicates which side of the vehicle
the fuel filler door is located.
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Do not start your vehicle
in a closed garage or in
other enclosed areas. Exhaust
fumes can be toxic. Always open
the garage door before you start
the engine. SeeGuarding
against exhaust fumesin this
chapter for more instructions.
If you smell exhaust fumes
inside your vehicle, have
your dealer inspect your vehicle
immediately. Do not drive if you
smell exhaust fumes.
Important safety precautions
A computer system controls the
engine's idle revolutions per
minute (RPM). When the engine
starts, the idle RPM runs faster to
warm the engine. If the engine idle
speed does not slow down
automatically, have the vehicle
checked.
Before starting the vehicle:
1. Make sure all vehicle occupants
have buckled their safety belts. For
more information on safety belts
and their proper usage, refer to
theSeating and safety restraints
chapter.
2. Make sure the headlamps and
vehicle accessories are off.
Starting
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