1999 NISSAN SENTRA engine overheat

of at least 87 AKI (Anti-Knock Index). How-
ever, you may use unleaded gasoline with
an octane rating as low as 85 AKI (Anti-
Knock Index) in high altitude areas (over
4,000 ft [1,219 m]) such as: Colorado, Mon-
tana, New Mexico, Utah, Wyoming, north-
eastern Nevada, southern Idaho, western
South Dakota, western Nebraska, and the
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
severe, 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 an authorized
NISSAN dealer correct the condition.
Failure to correct the condition is misuse
of the vehicle, for which NISSAN is not
responsible.
Incorrect ignition timing may result in spark
knock, after-run and/or overheating, which
may cause excessive fuel consumption or
engine damage. If any of the above symp-toms are encountered, have your vehicle
checked at an authorized 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
not a cause for concern, because you
get the greatest fuel benefit when there
is light spark knock for a short time
under heavy engine load.
10-4Technical and consumer information
ZX

Trailer lights
Trailer lights should comply with federal
and/ or local regulations. When wiring the
vehicle for towing, connect the stop and tail
light pickup into the vehicle electrical circuit.
Trailer brakes
If your trailer is equipped with a braking
system, make sure it conforms to federal
and/or local regulations and that it is prop-
erly installed.
WARNING
Never connect a trailer brake system
directly to the vehicle brake system.
Pre-towing tips
cBe certain your vehicle maintains a level
position when a loaded and/or unloaded
trailer is hitched. Do not drive the vehicle if
it has an abnormal nose-up or nose- down
condition; check for improper tongue load,
overload, worn suspension or other pos-
sible causes of either condition.
cAlways secure items in the trailer to
prevent load shift while driving.cBe certain your rear view mirrors con-
form to all federal, state or local regula-
tions. If not, install any mirrors required
for towing before driving the vehicle.
Trailer towing tips
In order to gain skill and an understanding
of the vehicle's behavior, you should prac-
tice turning, stopping and backing up in an
area which is free from traffic. Steering,
stability, and braking performance are
somewhat different than under normal driv-
ing conditions.
cAlways secure items in the trailer to
prevent load shift while driving.
c
Avoid abrupt starts, acceleration or stops.
cAvoid sharp turns or lane changes.
cAlways drive your vehicle at a moderate
speed.
c
Always block the wheels on both vehicle
and trailer when parking. Parking on a
slope is not recommended; however, if
you must do so, and if your vehicle is
equipped with an automatic transmission,
first block the wheels and apply the park-
ing brake, and then move the transmis-
sion shift selector lever into the P position.
If you move the shift selector lever to the P
position before blocking the wheels andapplying the parking brake, transmission
damage could occur.
cWhen going down a hill, shift into a lower
gear and use the engine braking effect.
When ascending a long grade, down-
shift the transmission to a lower gear
and reduce speed to reduce chances of
engine overloading and/or overheating.
cIf the engine temperature coolant rises
to an extremely high temperature when
the air conditioning system is on, turn off
the air conditioner. Coolant heat can be
additionally vented by opening the win-
dows, switching the fan control to high
and setting the temperature control to
the HOT position.
cTrailer towing requires more fuel than
normal circumstances.
cAvoid towing a trailer for your vehicle's
first 500 miles (800 km).
cHave your vehicle serviced more often
than at intervals specified in the recom-
mended Maintenance Schedule.
cWhen making a turn, your trailer wheels
will be closer to the inside of the turn
than your vehicle wheels. To compen-
sate for this, make a larger than normal
turning radius during the turn.
Technical and consumer information
10-17
ZX

cCrosswinds and rough roads adversely
affect vehicle/trailer handling, possibly
causing vehicle sway. When being
passed by larger vehicles, be prepared
for possible changes in crosswinds that
could affect vehicle handling. If swaying
does occur, firmly grip the steering
wheel, steer straight ahead, and imme-
diately (but gradually) reduce vehicle
speed. This combination helps to stabi-
lize the vehicle. Never increase speed.
cBe careful when passing other vehicles.
Passing while towing a trailer requires
considerably more distance than normal
passing. Remember the length of the
trailer must also pass the other vehicle
before you can safely change lanes.
cTo maintain engine braking efficiency
and electrical charging performance, do
not use fifth gear (manual transmission)
or overdrive (automatic transmission).
cAvoid holding the brake pedal down too
long or too frequently. This could cause
the brakes to overheat, resulting in re-
duced braking efficiency.
When towing a trailer, change the oil in
the transmission more frequently. For
additional information see the ``Mainte-
nance'' section earlier in this manual.DOT Quality Grades: All passenger car tires
must conform to Federal Safety Require-
ments in addition to these grades.
Quality grades can be found where appli-
cable on the tire sidewall between tread
shoulder and maximum section width. For
example:
Treadwear 200 Traction AA Temperature A
Treadwear
Treadwear grade is a comparative rating
based on tire wear rate when tested under
controlled conditions on specified govern-
ment test courses. For example, a tire
graded 150 would wear one and a half
(1-1/2) times as well on the government
course as a tire graded 100. However,
relative tire performance depends on actual
driving conditions, and may vary signifi-
cantly due to variations in driving habits,
service practices and differences in road
characteristics and climate.
Traction AA, A, B and C
The traction grades, from highest to lowest,
are AA, A, B, and C. Those grades repre-
sent a tire's ability to stop on wet pavement
as measured under controlled conditions,
on specified government test surfaces of
asphalt and concrete. A tire marked C may
have poor traction performance.
WARNING
The traction grade assigned to your
vehicle tires is based on straight-ahead
braking traction tests, and does notin-
clude acceleration cornering, hydro-
planing, or peak traction characteris-
tics.
Temperature A, B and C
Temperature grades are A (the highest), B,
and C. They represent a tire's resistance to
heat build-up, and its ability to dissipate
heat when tested under controlled condi-
tions on a specified indoor laboratory test
wheel. Sustained high temperature can
cause tire material to degenerate, reducing
tire life. Excessive temperatures can lead to
sudden tire failure. Grade C corresponds to
a performance level which all passenger car
tires must meet under the Federal Motor
Vehicle Safety Standard No. 109. Grades A
and B represent higher levels of perfor-
mance on laboratory test wheels than the
minimum required by law.
UNIFORM TIRE QUALITY
GRADING
10-18Technical and consumer information
ZX

Engine oil ................................................ 8-8
Engine oil and oil filter
recommendation ................................... 10-5
Engine oil viscosity ............................... 10-5
Opener lever for trunk lid........................... 3-10
Outside mirror control ................................ 3-14
Overdrive switch ................................... 5-8, 5-9
Overheat
If your vehicle overheats ...................... 6-10
Owner's manual order form ..................... 10-21
Owner's manual/service manual order
forms ........................................................ 10-21
P
Parking
Parking brake check ............................. 8-22
Parking brake operation ....................... 5-12
Parking/parking on hills ........................ 5-16
Periodic maintenance schedules ................. 9-5
Power
Power steering fluid .............................. 8-13
Power windows..................................... 2-16
Rear power windows ............................ 2-17
Power Lock
Power door locks .................................... 3-3
Precautions
Maintenance precautions ....................... 8-2
Precautions on seat belt usage............ 1-13
Precautions when starting and driving ... 5-2
Push starting .............................................. 6-10R
Radio
AM-FM radio with cassette player ........ 4-10
AM-FM radio with cassette player and
compact disc player.............................. 4-20
AM-FM radio with compact disc (CD)
player .................................................... 4-15
CB radio or car phone .......................... 4-27
Readiness for inspection maintenance (I/M)
test ........................................................... 10-20
Rear power windows ................................. 2-17
Rear seat ..................................................... 1-5
Rear window defogger switch ................... 2-11
Refrigerant recommendation ..................... 10-7
Registering your vehicle in another
country ..................................................... 10-10
Remote keyless entry system (See
multi-remote control system) ....................... 3-4
Reporting safety defects (USA) ............... 10-19
S
Safety
Child safety rear door lock ..................... 3-8
Reporting safety defects (USA) .......... 10-19
Seat adjustment ........................................... 1-2
Seat belt
Precautions on seat belt usage............ 1-13
Seat belt extenders .............................. 1-21
Seat belt maintenance.......................... 1-21
Seat belts.............................................. 1-13Shoulder belt height adjustment ........... 1-18
Three-point type with retractor ............. 1-16
Seat belt warning light ................................. 2-6
Seats
Front seats.............................................. 1-2
Rear seat ................................................ 1-5
Servicing air conditioner .............................. 4-9
Shift lock release ......................................... 5-5
Shifting
Automatic transmission .......................... 5-7
Manual transmission............................. 5-10
Shoulder belt height adjustment ................ 1-18
Spark plug replacement............................. 8-18
Speedometer ............................................... 2-3
SRS warning label ..................................... 1-11
Starting
Before starting the engine ...................... 5-5
Jump starting .......................................... 6-8
Precautions when starting and driving ... 5-2
Push starting......................................... 6-10
Starting the engine ............................... 5-11
Steering
Power steering fluid .............................. 8-13
Tilting steering wheel............................ 3-14
Stop light .................................................... 8-27
Sunroof ...................................................... 2-18
Supplemental restraint system
(Supplemental air bag system).................... 1-6
Switch
Automatic power window switch .......... 2-17
Front fog light switch ............................ 2-13
Hazard warning flasher switch ............. 2-14
11-4
ZX