engine Mercury Mountaineer 1998 s Repair Manual

law and could damage your
vehicle.
Your vehicle was not designed to
use fuel or fuel additives with
metallic compounds, including
manganese-based compounds
containing MMT.
Vehicles certified to California
emission standards (indicated on
the underhood Vehicle Emissions
Control Information label) are
designed to operate on California
reformulated gasolines. If
California reformulated gasoline is
not available when you refuel, your
vehicle can be operated on
non-California fuels. However, even
though your engine will perform
adequately on other gasolines, the
performance of the emission
control devices and systems may
be adversely affected.
Repair of damage caused by using
a fuel that your vehicle was not
designed for may not be covered
by your warranty.
Octane recommendations
Your vehicle is designed to use
regular unleaded with an (R+M)/2
octane rating of 87. We do not
recommend gasolines labeled as
ªregularº in high altitude areas that
are sold with octane ratings of 86
or even less.
Do not be concerned if your
vehicle sometimes knocks lightly.
However, if it knocks heavily under
most driving conditions on fuel
87
Maintenance and care
185

with the recommended octane, see
your dealer or a qualified service
technician to prevent any engine
damage.
Fuel quality
If you are experiencing starting,
rough idle or hesitation problems
try a different brand of fuel. If the
condition persists, see your dealer
or a qualified service technician.
The American Automobile
Manufacturers Association (AAMA)
issued a gasoline specification to
provide information on high quality
fuels that optimize the
performance of your vehicle. We
recommend the use of gasolines
that meet the AAMA specification
if they are available.
It should not be necessary to add
any aftermarket products to your
fuel tank if you continue to use a
high-quality fuel.
Cleaner air
Ford approves the use of gasolines
to improve air quality, including
reformulated gasolines that contain
oxygenates up to 10% ethanol or
15% MTBE.
Do not use gasolines containing
methanol, which can damage
critical fuel system components.
Damage resulting from the use of
methanol may not be covered by
your warranty.
Maintenance and care
186

²Do not turn off the ignition
while your vehicle is moving,
especially at high speeds.
²Have the services listed in your
ªService Guideº performed
according to the specified
schedule.
The Scheduled Maintenance
Services listed in the ªService
Guideº are required because they
are considered 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.
Watch for fluid leaks, strange
odors, smoke, loss of oil pressure,
the charging system warning light,
the ªCheck Engineº light or the
temperature warning light. These
events could indicate that the
emission control system is not
working properly.
Maintenance and care
188

If you smell exhaust fumes
of any kind inside your
vehicle, have the dealer inspect
and fix your vehicle immediately.
Do not drive if you smell exhaust
fumes. These fumes are harmful
and could kill you.
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.
Please consult your ªWarranty
Guideº 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 diagnostic (OBD-II)
system. If your ªcheck
engine/service engine soonº light is
on, reference the applicable light
description in theWarning Lights
and Chimessection of your
owners guide. Your vehicle may
Maintenance and care
189

not pass the I/M test with the
ªcheck engine/service engine soonº
light on.
If the vehicle's powertrain system
or its battery has just been
serviced, the OBD-II system is
reset to a ªnot ready for I/M testº
condition. To ready the OBD-II
system for I/M testing, a minimum
of 30 minutes of city and highway
driving is necessary as described
below:
²First, at least 10 minutes of
driving on an expressway or
highway.
²Next, 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.
EXTERIOR BULBS
Replacing exterior bulbs
Check the operation of the
following lamps frequently:
²headlamps
²foglamps
²high-mount brakelamp
²brakelamps
²turn signals
Maintenance and care
190

Use only carnauba or
synthetic-based waxes. Remove
any bugs and tar before waxing
vehicle. Use cleaning fluid or
alcohol with a clean cloth to
remove. Use tar remover to
remove any tar spots.
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 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.
²Cover the highlighted areas to
prevent water damage when
cleaning the engine.
Maintenance and care
197

²4.0L EFI
²Never wash or rinse the engine
while it is running; water in the
running engine may cause
internal damage.
Cleaning the wheels
Wash with the same detergent as
the body of your vehicle. Do not
use acid-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 plastic exterior parts
Use vinyl cleaner for routine
cleaning. Clean with a tar remover
if necessary. Do not clean plastic
parts with thinners, solvents or
petroleum-based cleaners.
Maintenance and care
199

MOTORCRAFT PART NUMBERS
Component 4.0L SOHC engine 5.0L engine
Air filter FA-1658 FA-1658
Fuel filter FG-872 FG-872
Battery (standard) BXT-65-650 BXT-65-650
Battery (optional) - BXT-65-850
Oil filter FL-1A FL-820S
PCV valve EV-225 EV-152
Spark plugs* AGRF-22P AWSF-32EE
* Refer to Vehicle Emissions Control Information (VECI) decal for
spark plug gap information.
REFILL CAPACITIES
Fluid Ford Part
NameApplication
Capacity
Engine oil
(including filter
change)Motorcraft 5W30
Super Premium
Motor OilAll
4.7L
(5.0 quarts)
Brake fluid Ford High
Performance
DOT 3 Brake
FluidAll
Fill to the MAX
line on reservoir
Power steering
fluidMotorcraft
MERCONtAT FAll Fill to line on
reservoir
Capacities and specifications
204

Fluid Ford Part
NameApplication
Capacity
Transmission
fluidMotorcraft
MERCONtV
AT F4R70W
Automatic with
5.0L engine
(AWD)13.1L
(13.9 quarts)
5R55E
Automatic with
4.0L SOHC
engine (4x2)9.25L
(9.75 quarts)
5R55E
Automatic with
4.0L SOHC
engine (4x4)9.55L
(10.0 quarts)
Transfer case Motorcraft
MERCONtAT FAWD 1.25L
(1.3 quarts)
4WD 1.4L
(1.5 quarts)
Engine coolant Ford Premium
Cooling System
Fluid4.0L engine 7.4L
(7.8 quarts)
5.0L engine 12.1L
(12.8 quarts)
Front axle fluid Motorcraft
80W90 Axle
LubricantAll
1.7L (3.5 pints)
Rear axle
fluid
1,2,3,4Motorcraft SAE
80W90 Axle
LubricantVehicles with
conventional
axles
2.9-3.1L
(5.50-5.80 pints) Motorcraft SAE
75W140 High
Performance
Synthetic Rear
Axle LubricantRefer to
footnotes 2 and
3
Capacities and specifications
205

Fluid Ford Part
NameApplication
Capacity
Windshield
washer fluidUltra-Clear
Windshield
ConcentrateAll vehicles
2.6L
(2.7 quarts)
1Fill to 6 mm to 14 mm (1/4 inch
to 9/16 inch) below bottom of fill
hole.
2Your vehicle's rear axle is
equipped with synthetic rear axle
lubricant. Rear axles containing
synthetic lubricant are lubricated
for life. These lubricants are not to
be checked or changed unless a
leak is suspected, service required
or the axle assembly has been
submerged in water. The axle
lubricant should be changed any
time the axle has been submerged
in water. For Traction±Lok add
118 ml (4 oz.) of additive friction
modifier C8AZ±19B546±A, Ford
specification EST-M2C118±A, to
your rear axle whenever the
lubricant is changed.
3Vehicles equipped with 4.0L
SOHC engines and 3.73 or 4.10
rear axle ratios or 5.0L engines
require synthetic rear axle
lubricant. Rear axles containing
synthetic lubricant are lubricated
for life. These lubricants are not to
be checked or changed unless a
leak is suspected, service required
or the axle assembly has been
submerged in water. The axle
lubricant should be changed any
time the axle has been submerged
in water. For Traction-Lok rear
Capacities and specifications
206