2004 NISSAN ALTIMA Owners Manual

1. Visually inspect each belt for signs of un-
usual wear, cuts, fraying or looseness. If the
belt is in poor condition or is loose, have it
replaced or adjusted by a NISSAN dealer.
2. Have the belts checked regularly for condi-
tion and tension in accordance with the
maintenance schedule found in the
“NISSAN Service and Maintenance Guide”.
1. Power steering fluid pump
2. Crank pulley
3. Generator
4. Air conditionerREPLACING SPARK PLUGS
Platinum-tipped spark plugs
It is not necessary to replace platinum-tipped
spark plugs as frequently as conventional type
spark plugs because they last much longer. Fol-
low the maintenance schedule, but do not reuse
the spark plugs by cleaning or regapping.
cAlways replace spark plugs with rec-
ommended or equivalent ones.
VQ35DE engine
WDI0226WDI0005
SPARK PLUGS
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Owners Manual(owners)ÐUSA English(nna)
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WARNING
Be sure the engine and ignition switch are
off and that the parking brake is engaged
securely.
CAUTION
Be sure to use the correct socket to re-
move the spark plugs. An incorrect socket
can damage the spark plugs.
QR25DE
1. Disconnect the negative battery cable.
2. Remove the engine cover.
3. Remove the coil pack bolt.
4. Remove the coil pack/spark plug boot from
the spark plug.
5. Remove the spark plugs with a spark plug
socket.
The plug socket has a rubber seal that holds
the spark plug so it does not fall when it is
pulled out. Make sure each spark plug is
snugly fitted into the spark plug socket.6. Fit the new plugs, one at a time, into the
spark plug socket and install them.Use
only the specified spark plugs.Turn
each plug several full turns by hand, then
tighten with the spark plug socket to the
correct torque. Do not overtighten.
Spark plug tightening torque:
14 - 22 ft-lb (20 - 29 N·m)
7. Install the coil pack/spark plug boot on the
spark plug by pushing it on until you feel a
snap.
8. Install the coil pack bolt.
Coil pack tightening torque:
48 - 65 in-lb (5.4 - 7.3 N·m)
9. Install the engine cover.
10. Connect the negative battery cable.
VQ35DE
If replacement is required, please see your
NISSAN dealer for assistance.The air cleaner filter should not be cleaned and
reused. Replace it according to the maintenance
intervals shown in the “NISSAN Service and
Maintenance Guide.” When replacing the filter,
wipe the inside of the air cleaner filter housing
and the cover with a damp cloth.
To remove the air cleaner filter:
s1Loosen the screw clamp.
s2Push down on the clips.
s3Disconnect the electrical connector.
4. Remove the air cleaner housing.
WDI0401
AIR CLEANER
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WARNING
cOperating the engine with the air
cleaner removed can cause you or oth-
ers to be burned. The air cleaner not
only cleans the air, it stops the flame if
the engine backfires. If it isn’t there, and
the engine backfires, you could be
burned. Do not drive with the air cleaner
removed, and be careful when working
on the engine with the air cleaner
removed.
cNever pour fuel into the throttle body or
attempt to start the engine with the air
cleaner removed. Doing so could result
in serious injury.
IN-CABIN MICROFILTER (if so
equipped)
The in-cabin microfilter restricts the entry of air-
borne dust and pollen particles and reduces
some objectionable outside odors. The filter is
located behind the glove box. Refer to the
“NISSAN Service and Maintenance Guide” for
change intervals.
To replace the filter, perform the following proce-
dure:1. Remove the 2 lower glove box hinge pins.
Remove the glove box from the opening and
let it hang by the cord.2. Remove the filter cover from the intake unit
by disengaging the 2 hook tabs at the bot-
tom of the cover.
LDI0154LDI0155
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NOTE:
The filter is marked “UP” with an arrow. The
end of the filter with the arrow should face
the rear of the vehicle.
3. Slide the filter into the housing.
LDI0156
LDI0157
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NOTE:
Make sure the filter sits on top of the 2
supporting tabs on the housing.
4. Replace the cover by inserting the upper
tabs inside the housing slot and pushing the
hook tabs until they snap on to the housing
lip.
5. Install the glove box door.
6. Fill out the date information on the small
replacement label and attach it to the glove
box lid.
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CLEANING
If your windshield is not clear after using the
windshield washer or if a wiper blade chatters
when running, wax or other material may be on
the blade or windshield.
Clean the outside of the windshield with a washer
solution or a mild detergent. Your windshield is
clean if beads do not form when rinsing with clear
water.
Clean each blade by wiping it with a cloth soaked
in a washer solution or a mild detergent. Then
rinse the blades with clear water. If your wind-
shield is still not clear after cleaning the blades
and using the wiper, replace the blades.
CAUTION
Worn windshield wiper blades can dam-
age the windshield and impair driver
vision.
REPLACING
Replace the wiper blades if they are worn.
s1Lift the wiper arm away from the windshield.
s2Push the release tab, then move the wiper
blade down the wiper arm to remove.
s3Remove the wiper blade.4. Insert the new wiper blade onto the wiper
arm until it clicks into place.
CAUTION
cAfter wiper blade replacement, return
the wiper arm to its original position;
otherwise it may be damaged when the
hood is opened.
cMake sure the wiper blades contact the
glass; otherwise the arms may be dam-
aged from wind pressure.
WDI0194
WINDSHIELD WIPER BLADES
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If you wax the surface of the hood, be careful not
to let wax get into the washer nozzle
s1. This may
cause clogging or improper windshield washer
operation. If wax gets into the nozzle, remove it
with a needle or small pin
s2.
CHECKING PARKING BRAKE
From the released position, pull the parking brake
lever up slowly and firmly. If the number of clicks is
out of the range listed, see a NISSAN dealer.
c7 - 8 clicks under pulling force of
44 lb (196 N) .
CHECKING BRAKE PEDAL
With the engine running, check the distanceA
between the upper surface of the pedal and the
metal floor. If it is out of the range shown, see a
NISSAN dealer.
Distance A: Under depression force of
110 lb (490 N)
Automatic
TransmissionManual
Transmission
3 1/2 in (90 mm)
or more3 1/3 in (84 mm)
or more
WDI0195
WDI0228WDI0229
PARKING BRAKE AND BRAKE PEDAL
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Self-adjusting brakes
Your vehicle is equipped with self-adjusting
brakes.
The front and rear disc-type brakes self-adjust
every time the brake pedal is applied.
WARNING
See a NISSAN dealer for a brake system
check if the brake pedal height does not
return to normal.
Brake pad wear indicators
The disc brake pads on your vehicle have audible
wear indicators. When a brake pad requires re-
placement, a high pitched scraping or screech-
ing sound will be heard when the vehicle is in
motion. The noise will be heard whether or not the
brake pedal is depressed. Have the brakes
checked as soon as possible if the wear indicator
sound is heard.
Under some driving or climate conditions, occa-
sional 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.Proper brake inspection intervals should
be followed.For more information regarding
brake inspections, see the appropriate mainte-
nance schedule information in the “NISSAN Ser-
vice and Maintenance Guide”.
BRAKE BOOSTER
Check the brake booster function as follows:
1. With the engine off, press and release the
brake pedal several times. When brake
pedal movement (distance of travel) remains
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. Keep the pedal depressed for about
30 seconds. The pedal height should not
change.
4. Run the engine for one minute without de-
pressing the brake pedal, then turn it off.
Depress the brake pedal several times. The
pedal travel distance will decrease gradually
with each depression as the vacuum is re-
leased from the booster.
If the brakes do not operate properly, have the
brakes checked by a NISSAN dealer.
ENGINE COMPARTMENT
CAUTION
Never use a fuse of a higher or lower
amperage rating than specified on the
fuse box cover. This could damage the
electrical system or cause a fire.
If any electrical equipment does not come on,
check for an open fuse.
1. Be sure the ignition switch and the headlight
switch are OFF.
2. Open the engine hood.
WDI0230
FUSES
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Owners Manual(owners)ÐUSA English(nna)
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