1997 Mercury Mountaineer check engine

SERVICE RECOMMENDATIONS
Whenever possible, Ford has
designed parts that do not require
servicing. However, when servicing
is required, Ford's goal is to make
servicing your vehicle as easy as
possible. To help you:
²We highlight do-it-yourself items
in the engine compartment for
easy location.
²Often, parts (such as the
headlamp bulbs) may be
replaced without tools.
²We provide you with aService
Guidethat makes tracking
routine service of your vehicle
easy.
If your vehicle requires
professional servicing, your
dealership can provide the
necessary parts and service. Check
theWarranty Guideto find out
which parts and services are
covered. Use only recommended
fuels, lubricants, fluids, and service
parts conforming to Ford
specifications. Motorcraft parts are
designed and built to provide the
best performance in your vehicle.
Precautions for servicing your
vehicle
Be particularly careful when
inspecting or servicing your
vehicle. Here are some general
precautions for your safety:
²Do not work on a hot engine.
The engine cooling fan may
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136

CHECKING AND ADDING
ENGINE OIL
Use WSS-M2C153-F motor oil
CERTIFIED FOR GASOLINE
ENGINES by the American
Petroleum Institute.
Engine oils with an SAE 5W±30
viscosity and displaying the
American Petroleum Institute
certification mark are preferred for
your vehicle. They provide the best
engine performance, fuel economy
and engine protection for all
climates down to ±25ÉC (±15ÉF).
Do not use:
²ªnon-detergentº oils
²oils labeled API SA, SB, SC, SD,
SE, SF, or SG
²additional engine oil additives,
oil treatments or engine
treatments
Additional engine oil additives, oil
treatments, or engine treatments
are never needed and could, under
certain conditions, lead to engine
damage which is not covered by
your Ford warranty.
Synthetic engine oils which are
CERTIFIED and of the preferred
viscosity may be used in your
engine. The engine oil and oil filter
must still be changed according to
theService Guide.
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140

Checking the engine oil
Check the engine oil every time
you fuel your vehicle.
Check the engine oil level more
frequently if the vehicle is carrying
a heavy load, towing a trailer,
idling for extended periods (like
police, taxi, or shuttle service
vehicles), or driven at high speeds
for extended periods of time.
To check engine oil:
1. Once the engine is warm, turn
the engine off. Make sure the
vehicle is parked on level ground.
2. Depress the parking brake.
Place the gearshift in P (Park).
3. Open the hood. Protect yourself
from engine heat.
4. Remove the engine oil dipstick
and wipe clean. Reinsert the
dipstick fully, then remove it again.
The oil level should be between
the MIN and MAX lines. If the oil
level lies between the MIN and
MAX lines, there is no need to
add.
5. If the oil level is below the MIN
line, add engine oil as necessary
and recheck the oil level. If the oil
level is above the letter ``M'' in
``MAX,'' engine damage and/or high
oil consumption may occur and
some oil must be removed from
the engine.
MAX MIN
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141

Adding engine oil
If the fluid level is below the MIN
line, add engine oil. Add engine oil
through the oil filler cap and use a
funnel to pour oil into the opening.
Make sure you use a certified
engine oil of the preferred
viscosity.
Recheck the oil level. Make sure
that the oil level is not above the
MAX line on the dipstick.
Continuous contact with
USED motor oil has
caused cancer in laboratory rats.
Ford production and aftermarket
(Motorcraft) oil filters are designed
for added engine protection and
long life. If a replacement oil filter
is used that does not meet Ford
material and design specifications,
startup engine noises or knock
may be experienced.
It is recommended you use the
appropriate Motorcraft oil filter (or
another brand meeting Ford
specifications) for your engine
application.
CHECKING AND ADDING
BRAKE FLUID
Brake fluid should be checked and
refilled as needed at least once
each year.
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142

Checking and adding washer
fluid for the liftgate
The opening for this reservoir is
located on the left side of the
vehicle above the tail lamp. Be
sure to close the cover after filling
and before closing the liftgate. The
reservoir must be filled slowly to
allow trapped air to escape. Use of
a funnel is recommended for easier
filling.
CHECKING AND ADDING
ENGINE COOLANT
Check the engine coolant level in
the reservoir at least once a
month.
If the engine coolant has not been
checked for a long period of time,
the engine coolant reservoir may
eventually empty. If this occurs,
add engine coolant to the coolant
reservoir. For more information on
engine coolant maintenance, refer
toAdding engine coolant to the
reservoirin this chapter.
Automotive fluids are not
interchangeable; do not
use engine coolant, antifreeze, or
windshield washer fluid outside
of their specified function and
vehicle location.
When adding engine coolant
Ford recommends Ford Premium
Cooling System fluid, which is an
optimized formula that will protect
all metals and rubber elastomers
used in Ford engines for four years
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145

Checking the cooling system
hoses
Before adding or replacing coolant,
inspect all cooling system hoses
for:
²deterioration
²leaks
²loose clamps
CHECKING AND ADDING
POWER STEERING FLUID
Check the power steering fluid at
least twice a year by completing
the following steps:
1. Start the engine.
2. When the engine coolant
temperature gauge reaches the
normal zone, turn off the engine.
CH
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148

Your vehicle does not use up
transmission fluid. However, it is
recommended that you check the
transmission fluid at least twice a
year. The fluid level should be
checked if the transmission is not
working properly, i.e., the
transmission slips or shifts slowly
or if you notice some sign of fluid
leakage.
It is preferable to check the
transmission fluid level at normal
operating temperature, after
approximately 32 km (20 miles) of
driving. However, if necessary, you
can check the fluid level without
driving to obtain a normal
operating temperature if the
outside temperature is above 10ÉC
(50ÉF).
If the 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 the fluid
to cool before checking.
1. Park the vehicle on a level
surface.
2. Start the engine and move the
gearshift lever through all of the
gear ranges. Allow sufficient time
for each gear to change.
3. Latch the gearshift lever in
P(Park), set the parking brake and
leave the engine running.
4. Remove the dipstick, wiping it
clean with a clean, dry rag.
5. Install the dipstick.
P R N D 2 1
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150

the electrolyte level and adding
water. Check the electrolyte level
every 24 months or 40,000 km
(24,000 miles) in average
temperatures 32ÉC (90ÉF). Keep
the electrolyte level in each cell up
to the level indicator. Do not
overfill.
If the level gets low, refill the
battery with distilled water. If
necessary, distilled water may be
substituted with tap water that is
not hard and does not have a high
mineral or alkali content. If the
battery needs water quite often,
have the charging system checked
for a possible malfunction.
Your vehicle is equipped with a
battery saver control feature
designed to prevent your battery
from accidental wear down due to
doors left ajar. For information on
the system and how it works, see
Interior overhead lampin the
Controls and featureschapter.
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 computer must
ªrelearnº its idle conditions before
your vehicle will drive properly. To
begin this process:
1. Put the gearshift in P (Park).
2. Turn off all accessories, and
start the vehicle.
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