check engine NISSAN PATHFINDER 1998 R50 / 2.G Owner's Guide

3. Check each new spark plug gap with a
feeler gauge. Correct it as required.
4. Install spark plugs.
When installing a plug, turn it in two or
three turns by hand and then tighten with a
spark plug wrench. Be careful not to over-
tighten it.
Tightening torque:
14 to 22 ft-lb (20 to 29 N×m)
5. Reconnect the spark plug cables to their
original positions.The filter element should not be cleaned and
reused as it is given a special treatment. We
recommended it be replaced according to the
maintenance intervals. See ªPeriodic mainte-
nanceº in the ª9. Maintenanceº section for
maintenance intervals. When replacing the
filter, wipe the inside of the air cleaner housing
and the cover with a damp cloth.
IOperating the engine with the air
cleaner off can cause you or others to
be burned. The air cleaner not onlycleans the air, it stops flame if the
engine backfires. If it is not there, and
the engine backfires, you could be
burned. Do not drive with it off, and
be careful working on the engine with
the air cleaner off.
INever pour fuel into the throttle body
or attempt to start the engine with the
air cleaner removed. Doing so could
result in serious injury.
DI0065
SDI0393
AIR CLEANER
8-16
Do-it-yourself
Z
01.1.31/R50-D
X

If you wax the surface of the hood, be
careful not to let wax get into the washer
nozzle. This may cause clogging or im-
proper windshield washer operation. If wax
gets into the nozzle, remove it with a needle
or small pin.
CHECKING PARKING BRAKEPull the parking brake lever up. If the number
of clicks is out of the range as listed above, see
your NISSAN dealer.
CHECKING BRAKE PEDALWith the engine running, check distance A
between the upper surface of the pedal and
the dash lower panel.
Distance A
M/T models
2-1/2 in (65 mm) or more
A/T models
2-3/4 in (70 mm) or more
If it is out of the range shown above, see your
NISSAN dealer.
SDI0425
DI1010-C
DI0453
PARKING BRAKE AND BRAKE
PEDAL
8-18
Do-it-yourself
Z
01.1.31/R50-D
X

Self-adjusting brakesYour vehicle is equipped with self-adjusting
brakes.
The front disc-type brakes self-adjust every
time the brake pedal is applied. The rear
drum-type brakes self-adjust every time the
parking brake is applied. If the brake pedal
goes down farther than normal, it may be due
to a lack of adjustment of the rear drum
brakes. Apply the parking brake several times.See your NISSAN dealer and have it
checked if the brake pedal height does
not return to normal.Brake pad wear indicatorsThe disc brake pads on your vehicle have
audible wear indicators. When a brake pad
requires replacement, it will make a high
pitched scraping or screeching sound when
the vehicle is in motion whether or not the
brake pedal is depressed. Have the brakes
checked as soon as possible if the wear indi-
cator sound is heard.
Under some driving or climate conditions, oc-casional brake squeak, squeal or other noise
may be heard. Occasional brake noise during
light to moderate stops is normal and does not
affect the function or performance of the brake
system.
The rear drum brakes (if so equipped) do not
have audible wear indicators. Should you ever
hear an unusually loud noise from the rear
drum brakes, have them inspected as soon as
possible by your NISSAN dealer.
Proper brake inspection intervals should
be followed.For additional information, see
ªPeriodic maintenanceº in the ª9. Mainte-
nanceº section for maintenance intervals.
BRAKE BOOSTERCheck the brake booster function with the
following steps:
1. With the engine off, press and release the
brake pedal several times. When brake
pedal movement (distance of travel) re-
mains the same from one pedal application
to the next, continue on to the next step.
2. While depressing the brake pedal, start the
engine. The pedal height should drop a
little.
3. With the brake pedal depressed, stop the
engine. Keeping the pedal depressed forabout 30 seconds, the pedal height should
not change.
4. Run the engine for one minute without
depressing the brake pedal, then turn it off.
Depress the brake pedal several times. The
pedal travel distance will decrease gradu-
ally with each depression as the vacuum is
released from the booster.
If the brakes do not operate properly, have the
brake checked by your NISSAN dealer.
Do-it-yourself
8-19
Z
01.1.31/R50-D
X

Press the pedal by hand and be sure the free
travel is within the above limit. If free travel is
out of the range shown above, see your
NISSAN dealer.
ENGINE COMPARTMENTNever use a fuse of higher amperage
rating than that specified on the fuse
box cover. This could damage the elec-
trical system or cause a fire.If any electrical equipment does not operate,
check for an open fuse.
1. Be sure the ignition key and the headlight
switch are OFF.2. Open the engine hood.
3. Remove the fusible link cover.
4. Remove the fuse with the fuse puller.
5. If the fuse is open, replace it with a new
fuse.
6. If a new fuse opens again, have the elec-
trical system checked and repaired by your
NISSAN dealer.
DI0070-B
SDI0395
CLUTCH PEDAL FUSES8-20
Do-it-yourself
Z
01.1.31/R50-D
X

PASSENGER COMPARTMENTNever use a fuse of higher amperage
rating than that specified on the fuse
box cover. This could damage the elec-
trical system or cause a fire.If any electrical equipment does not operate,
check for an open fuse.
1. Be sure the ignition key and the headlight
switch are OFF.2. Pull to open the fuse box cover/coin tray.
3. Pull the fuse box cover/coin tray horizon-
tally to remove it.
4. Remove the fuse with the fuse puller.
5. If the fuse is open, replace it with a new
fuse.
6. If a new fuse opens again, have the elec-
trical system checked and repaired by your
NISSAN dealer.
HEADLIGHTSThe headlight is a semi-sealed beam type
which uses a replaceable headlight (halogen)
bulb. A bulb can be replaced inside the engine
compartment without removing the headlight
assembly.High pressure halogen gas is sealed
inside the halogen bulb. The bulb may
break if the glass envelope is scratched
or the bulb is dropped.
SDI0447
DI0156
LIGHTS
Do-it-yourself
8-21
Z
01.1.31/R50-D
X

Your new NISSAN has been designed to have
minimum maintenance requirements with
longer service intervals to save you both time
and money. However, some day- to-day and
regular maintenance is essential to maintain
your NISSAN's good mechanical condition, as
well as its emission and engine performance.
It is the owner's responsibility to make sure
that the specified maintenance, as well as
general maintenance, is performed.
As the vehicle owner, you are the only one
who can ensure that your vehicle receives the
proper maintenance care. You are a vital link
in the maintenance chain.
General maintenance:
General maintenance includes those items
which should be checked during normal day-
to-day operation of the vehicle. They are es-
sential if your vehicle is to continue to operate
properly. It is your responsibility to perform
these procedures regularly as prescribed.
These checks or inspections can be done by
yourself, a qualified technician or, if you prefer,
your NISSAN dealer.
Periodic maintenance:
The maintenance items listed in this part are
required to be serviced at regular intervals.However, under severe driving conditions, ad-
ditional or more frequent maintenance will be
required.
Where to go for service:
If maintenance service is required or your
vehicle appears to malfunction, have the sys-
tems checked and tuned by an authorized
NISSAN dealer.
NISSAN technicians are well-trained special-
ists and are kept up to date with the latest
service information through technical bulletins,
service tips, and in-dealership training pro-
grams. They are completely qualified to work
on NISSAN's vehicles before they work on
your vehicle, rather than after they have
worked on it.
You can be confident that your NISSAN deal-
er's service department performs the best job
to meet the maintenance requirements on your
vehicle Ð in a reliable and economic way.During the normal day-to-day operation of the
vehicle, general maintenance should be per-
formed regularly as prescribed in this section.
If you detect any unusual sounds, vibrations or
smell, be sure to check for the cause or have
your NISSAN dealer do it promptly. In addition,
you should notify your NISSAN dealer if you
think that repairs are required.
When performing any checks or maintenance
work, see ªMaintenance precautionsº in the ª8.
Do-it-yourselfº section.
EXPLANATION OF MAINTENANCE
ITEMSAdditional information on the following
items with * is found in the ª8. Do-it-
yourselfº section.Outside the vehicleThe maintenance items listed here should be
performed from time to time, unless otherwise
specified.
Tires*Check the pressure with a gauge peri-
odically when at a service station, including the
spare, and adjust to the specified pressure if
necessary. Check carefully for damage, cuts
or excessive wear.
Wheel nuts*When checking the tires, makeGENERAL MAINTENANCE
9-2
Maintenance
Z
01.1.31/R50-D
X

sure no nuts are missing, and check for any
loose nuts. Tighten if necessary.
Tire rotation*Tires should be rotated every
7,500 miles (12,000 km) for 2WD vehicles and
3,750 miles (6,000 km) for 4WD vehicles.
However, the timing for tire rotation may vary
according to your driving habits and road sur-
face conditions.
Wheel alignment and balanceIf the vehicle
should pull to either side while driving on a
straight and level road, or if you detect uneven
or abnormal tire wear, there may be a need for
wheel alignment.
If the steering wheel or seat vibrates at normal
highway speeds, wheel balancing may be
needed.
Windshield wiper blades*Check for cracks
or wear if they do not wipe properly.
Doors and engine hoodCheck that all doors
and the engine hood, operate properly. Also
ensure that all latches lock securely. Lubricate
hinges, latches, rollers and links if necessary.
Make sure that the secondary latch keeps the
hood from opening when the primary latch is
released.
When driving in areas using road salt or othercorrosive materials, check lubrication fre-
quently.
Inside the vehicleThe maintenance items listed here should be
checked on a regular basis, such as when
performing periodic maintenance, cleaning the
vehicle, etc.
Lights*Make sure that the headlights, stop
lights, tail lights, turn signal lights, and other
lights are all operating properly and installed
securely. Also check headlight aim.
Warning lights and buzzers/chimesMake
sure that all warning lights and buzzers/chimes
are operating properly.
Windshield wiper and washer*Check that
the wipers and washer operate properly and
that the wipers do not streak.
Windshield defrosterCheck that the air
comes out of the defroster outlets properly and
in sufficient quantity when operating the heater
or air conditioner.
Steering wheelCheck for changes in the
steering conditions, such as excessive free-
play, hard steering or strange noises.
SeatsCheck seat position controls such asseat adjusters, seatback recliner, etc. to en-
sure they operate smoothly and that all latches
lock securely in every position. Check that the
head restraints move up and down smoothly
and that the locks (if so equipped) hold se-
curely in all latched positions.
Seat beltsCheck that all parts of the seat belt
system (e.g. buckles, anchors, adjusters and
retractors) operate properly and smoothly, and
are installed securely. Check the belt webbing
for cuts, fraying, wear or damage.
Accelerator pedalCheck the pedal for
smooth operation and make sure the pedal
does not catch or require uneven effort. Keep
the floor mats away from the pedal.
Clutch pedal*Make sure the pedal operates
smoothly and check that it has the proper free
travel.
BrakesCheck that the brakes do not pull the
vehicle to one side when applied.
Brake pedal and booster*Check the pedal
for smooth operation and make sure it has the
proper distance under it when depressed fully.
Check the brake booster function. Be certain
to keep floormats away from the pedal.
Maintenance
9-3
Z
01.1.31/R50-D
X

Parking brake*Check that the lever has the
proper travel and confirm that your vehicle is
held securely on a fairly steep hill with only the
parking brake applied.
Automatic transmission P position mecha-
nismOn a fairly steep hill check that your
vehicle is held securely with the selector lever
in the P position without applying any brakes.Under the hood and vehicleThe maintenance items listed here should be
checked periodically e.g. each time you check
the engine oil or refuel.
Windshield washer fluid*Check that there is
adequate fluid in the tank.
Engine coolant level*Check the coolant level
when the engine is cold.
Radiator and hosesCheck the front of the
radiator and clean off any dirt, insects, leaves,
etc., that may have accumulated. Make sure
the hoses have no cracks, deformation, rot or
loose connections.
Brake and clutch fluid levels*Make sure that
the brake and clutch fluid level is between the
MAX and MIN lines on the reservoir.
Battery*Check the fluid level in each cell. Itshould be between the MAX and MIN lines.
Engine drive belts*Make sure that no belt is
frayed, worn, cracked or oily.
Engine oil level*Check the level after parking
the vehicle on a level spot and turning off the
engine. (Be sure to wait a few minutes to allow
the oil to drain back into the sump.)
Power steering fluid level* and linesCheck
the level when the fluid is cold and the engine
is turned off. Check the lines for proper attach-
ment, leaks, cracks, etc.
Automatic transmission fluid level*Check
the level after putting the selector lever in P
(Park) with the engine idling.
Exhaust systemMake sure there are no
loose supports, cracks or holes. If the sound of
the exhaust seems unusual or there is a smell
of exhaust fumes, immediately locate the
trouble and correct it. See ªPrecautions when
starting and drivingº in the ª5. Starting and
drivingº section for exhaust gas (carbon mon-
oxide).
UnderbodyThe underbody is frequently ex-
posed to corrosive substances such as those
used on icy roads or to control dust. It is veryimportant to remove these substances, other-
wise rust will form on the floor pan, frame, fuel
lines and around the exhaust system. At the
end of winter, the underbody should be thor-
oughly flushed with plain water, being careful
to clean those areas where mud and dirt may
accumulate. For additional information, see
ªCleaning exteriorº in the ª7. Appearance and
careº section.
Fluid leaksCheck under the vehicle for fuel,
oil, water or other fluid leaks after the vehicle
has been parked for a while. Water dripping
from the air conditioner after use is normal. If
you should notice any leaks or if gasoline
fumes are evident, check for the cause and
have it corrected immediately.9-4
Maintenance
Z
01.1.31/R50-D
X

EXPLANATION OF MAINTENANCE
ITEMSAdditional information on the following
items with * is found in the ª8. Do-it-
yourselfº section.Emission control system
maintenanceDrive belts*Check drive belts for wear, fray-
ing or cracking and also for proper tension.
Replace the drive belts if found damaged.
Air cleaner filterUnder normal driving condi-
tions, the air cleaner filter should be replaced
in accordance with the maintenance schedule.
However, driving the vehicle in dusty areas
may cause more rapid clogging of the element.
Consequently, the element may have to be
replaced more frequently.
Vapor linesCheck vapor lines and connec-
tions for failure or looseness. If leaks are
found, replace the lines.
Fuel linesCheck the fuel hoses, piping and
connections for leaks, looseness or deteriora-
tion. Replace any parts if they are damaged.
Fuel filterIf the vehicle is operated underextremely adverse weather conditions or in
areas where ambient temperatures are either
extremely low or extremely high, the filter
might become clogged. In such an event,
replace the filter immediately.
Engine coolant*Flush and refill the cooling
system.
Engine oil & oil filter*Under normal driving
conditions, the engine oil and oil filter should
be replaced in accordance with the mainte-
nance schedule. However, under severe driv-
ing conditions, they may have to be replaced
more frequently.
Spark plugs*Replace with new plugs having
the correct heat range.
Timing belt
Replace the timing belt for driving the cam-
shafts.
Chassis and body maintenanceBrake lines & cablesCheck the brake lines
and hoses (including brake booster vacuum
hoses, connections & check valve) and park-
ing brake cables for proper attachment, leaks,
cracks, chafing, abrasion, deterioration, etc.Brake pads, discs, drums & liningsCheck
these and the other neighboring brake compo-
nents for wear, deterioration and leaks. Under
severe driving conditions, they may have to be
inspected more frequently.
Manual and automatic transmission, trans-
fer & differential gear oilVisually inspect for
signs of leakage and replace oil for limited-slip
differential. Under severe driving conditions,
the oil should be replaced at the specified
interval.
Steering gear & linkage, axle & suspension
parts & drive axle shaft bootsCheck for
damage, looseness and leakage of oil or
grease. Under severe driving conditions, more
frequent inspection should be performed.
Steering linkage ball joints & front suspen-
sion ball jointsCheck the ball joints for dam-
age, looseness and grease leakage. Under
severe driving conditions, more frequent in-
spection should be performed.
Propeller shaft(s)Check the propeller
shaft(s) for damage, looseness and grease
leakage under severe driving condition
(
only).
9-10
Maintenance
Z
01.1.31/R50-D
X

eastern Nevada, southern Idaho, western
South Dakota, western Nebraska, and that
part of Texas which is directly south of New
Mexico.
Using unleaded gasoline with an octane
rating lower than stated above can cause
persistent, heavy spark knock. (Spark
knock is a metallic rapping noise.) If se-
vere, this can lead to engine damage. If you
detect a persistent heavy spark knock even
when using gasoline of the stated octane
rating, or if you hear steady spark knock
while holding a steady speed on level
roads, have your dealer correct the condi-
tion. Failure to correct the condition is
misuse of the vehicle, for which NISSAN is
not responsible.
Incorrect ignition timing will result in knocking,
after-run or overheating. This in turn may
cause excessive fuel consumption or damage
to the engine. If any of the above symptoms
are encountered, have your vehicle checked at
a NISSAN dealer or other competent service
facility.
However, now and then you may notice
light spark knock for a short time while
accelerating or driving up hills. This is no
cause for concern, because you get thegreatest fuel benefit when there is light
spark knock for a short time.
Technical and consumer information
10-5
Z
01.1.31/R50-D
X