2003 NISSAN 350Z engine overheat

TACHOMETERThe tachometer indicates engine speed in revo-
lutions per minute (r/min).
CAUTION
When engine speed approaches the red
zone, shift to a higher gear. Operating
the engine in the red zone may cause
serious engine damage.
ENGINE COOLANT TEMPERATURE
GAUGEThe gauge indicates the engine coolant tem-
perature.
The engine coolant temperature will vary with the
outside air temperature and driving conditions.
CAUTION
If the gauge indicates engine coolant
temperature over the normal range,
stop the vehicle as soon as safely pos-
sible. If the engine is overheated, con-
tinued operation of the vehicle may se-
riously damage the engine. See ªIf your
vehicle overheatsº in the ª6. In case of
emergencyº section for immediate ac-
tion required.
SIC1950
SIC1951
Instruments and controls
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draw. Do not use double adapters or
more than one electrical accessory.
IUse this power outlet with the engine
running. (If the engine is stopped,
this could result in a discharged bat-
tery.)
IAvoid using when the air conditioner,
headlights or rear window defroster
is on.
IBefore inserting or disconnecting a
plug, be sure to turn off the power
switch of electrical accessory being
used or the ACC power of the vehicle.
IPush the plug in as far as it will go. If
good contact is not made, the plug
may overheat or the internal tem-
perature fuse may blow.
IWhen not in use, be sure to close the
cap. Do not allow water to contact
the socket.The cigarette lighter unit (including the socket)
and ashtray are accessories. A genuine NISSAN
cigarette lighter unit and/or ashtray can be pur-
chased from a NISSAN dealer.
The cigarette lighter operates when the ignition
switch is in the ACC or ON position.
Push the lighter in all the way. When the lighter
is heated, it will spring out.
Return the lighter to its original position after
use.
WARNING
The cigarette lighter should not be used
while driving so full attention may be
given to vehicle operation.
CAUTION
The cigarette lighter socket is a power
source for the cigarette lighter element
only. The use of the cigarette lighter
socket as a power source for any other
accessory is not recommended.
SIC1969
CIGARETTE LIGHTER AND
ASHTRAY (accessory)
2-28
Instruments and controls
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d. You have had an accident involv-
ing damage to the exhaust system,
underbody, or rear of the vehicle.
THREE WAY CATALYSTThe three way catalyst is an emission control
device installed in the exhaust system. Exhaust
gases in the converter are burned at high tem-
peratures to help reduce pollutants.
WARNING
IThe exhaust gas and the exhaust sys-
tem are very hot. Keep people, ani-
mals or flammable materials away
from the exhaust system compo-
nents.
IDo not stop or park the vehicle over
flammable materials such as dry
grass, waste paper or rags. They may
ignite and cause a fire.
CAUTION
IDo not use leaded gasoline. Deposits
from leaded gasoline seriously re-
duce the three way catalyst's ability
to help reduce exhaust pollutants.
IKeep your engine tuned up. Malfunc-
tions in the ignition, fuel injection, or
electrical systems can cause overrich
fuel flow into the three way catalyst,
causing it to overheat. Do not keep
driving if the engine misfires, or if
noticeable loss of performance or
other unusual operating conditions
are detected. Have the vehicle in-
spected promptly by a NISSAN
dealer.
IAvoid driving with an extremely low
fuel level. Running out of fuel could
cause the engine to misfire, damag-
ing the three way catalyst.
IDo not race the engine while warm-
ing it up.
IDo not push or tow your vehicle to
start the engine.
LOW TIRE PRESSURE WARNING
SYSTEM (if so equipped)The low tire pressure warning system displays
pressure of all tires (except the spare tire) on the
trip computer by sending a signal from a sensor
that is installed in each wheel.
The low tire pressure warning system will acti-
vate only when the vehicle is driven at speeds
above 20 MPH (32 km/h). Also, this system may
not detect a sudden drop in tire pressure (for
example, a flat tire by catching something while
driving).
Frequently check the tire pressure indicator on
the trip computer and adjust pressure of each
tire properly. See ªTrip computerº in the ª2.
Instruments and controlsº section for the tire
pressure indicator.Flat tire warningIf the vehicle is being driven with a flat tire or
extremely low tire pressure (lower than 28 psi),
the low tire pressure warning light comes on,
and the chime sounds for about 10 seconds. On
the trip computer, the PSI indicator starts flash-
ing and the current display switches to the tire
pressure indicator.
For additional information regarding the above
warning, see ªTrip computerº and
Starting and driving
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BRAKING PRECAUTIONSThe brake system has two separate hydraulic
circuits. If one circuit malfunctions, you will still
have braking at two wheels.Vacuum assisted brakeThe brake booster aids braking by using engine
vacuum. If the engine stops, you can stop the
vehicle by depressing the brake pedal. However,
greater foot pressure on the brake pedal will be
required to stop the vehicle and the stopping
distance will be longer.Using the brakesAvoid resting your foot on the brake pedal while
driving. This overheats the brakes, increases
wear on the brake linings and pads, and reduces
gas mileage.
To help save the brakes and to prevent the
brakes from overheating, reduce speed and
downshift to a lower gear before going down a
slope or long grade. Overheated brakes may
reduce braking performance and could result in
loss of vehicle control.
WARNING
IWhile driving on a slippery surface,
be careful when braking, accelerat-
ing or downshifting. Abrupt braking
or accelerating could cause the
wheels to skid and result in an acci-
dent.
IIf the engine is not running or is
turned off while driving, the power
assist for the brakes will not work.
Braking will be harder.Wet brakesWhen the vehicle is washed or driven through
water, the brakes may get wet. As a result, your
braking distance will be longer and the vehicle
may pull to one side during braking.
To dry brakes, drive the vehicle at a safe speed
while lightly pressing the brake pedal to heat-up
the brakes. Do this until the brakes return to
normal. Avoid driving the vehicle at high speeds
until the brakes function correctly.ANTI-LOCK BRAKE SYSTEM (ABS)The anti-lock brake system controls the brakesat each wheel so the wheels will not lock when
braking abruptly or when braking on slippery
surfaces. The system detects the rotation speed
at each wheel and varies the brake fluid pressure
to prevent each wheel from locking and sliding.
By preventing wheel lockup, the system helps
the driver maintain steering control and helps to
minimize swerving and spinning on slippery sur-
faces.
Using the systemDepress the brake pedal and hold it down.
WARNING
Do not pump the brake pedal. Doing so
may result in increased stopping dis-
tances.Normal operationThe anti-lock brake system will not operate at
speeds below 3 to 6 MPH (5 to 10 km/h) to
completely stop the vehicle. (The speeds will
vary according to road conditions.) When the
anti-lock system senses that one or more wheels
are close to locking up, the actuator (under the
hood) rapidly applies and releases hydraulic
pressure (like pumping the brakes very quickly).
BRAKE SYSTEM5-20
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WARNING
IDo not continue to drive if your ve-
hicle overheats. Doing so could
cause a vehicle fire.
ITo avoid the danger of being scalded,
never remove the radiator cap while
the engine is still hot. When the ra-
diator cap is removed, pressurized
hot water will spurt out, possibly
causing serious injury.
IDo not open the hood if steam is
coming out.
If your vehicle is overheating (indicated by an
extremely high temperature gauge reading), or if
you feel a lack of engine power, detect abnormal
noise, etc., take the following steps:
1. Move the vehicle safely off the road, apply the
parking brake and move the shift lever to the
N (Neutral) position (automatic transmission
to the P (Park) position).
Do not stop the engine.
2. Turn off the air conditioner switch. Open all
the windows, move the heater or air condi-tioner temperature control to maximum hot
and fan control to high speed.
3. If engine overheating is caused by climbing a
long hill on a hot day, run the engine at a fast
idle (approximately 1,500 rpm) until the tem-
perature gauge indication returns to normal.
4. Get out of the vehicle. Look and listen for
steam or coolant escaping from the radiator
before opening the hood. Wait until no steam
or coolant can be seen before proceeding.
5. Open the engine hood.
WARNING
If steam or water is coming from the
engine, stand clear to prevent getting
burned.
6. Visually check if the cooling fan is running.
The radiator hoses and radiator should not
leak water.
If coolant is leaking or the cooling fan does
not run, stop the engine.
WARNING
IBe careful not to allow your hands,
hair, jewelry or clothing to come into
contact with, or to get caught in the
cooling fan, or drive belt.
IThe engine cooling fan can start at
any time when the coolant tempera-
ture is high.
7. After the engine cools down, check the cool-
ant level in the reservoir tank with the engine
running. Add coolant to the reservoir tank if
necessary. Have your vehicle repaired at the
nearest NISSAN dealer.
IF YOUR VEHICLE OVERHEATS
In case of emergency
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The engine cooling system is filled at the factory
with a high-quality, year-round, anti-freeze cool-
ant solution. The anti-freeze solution contains
rust and corrosion inhibitors, therefore additional
cooling system additives are not necessary.
CAUTION
When adding or replacing coolant, be
sure to use only a genuine NISSAN
anti-freeze coolant or equivalent with
the proper mixture ratio of 50% anti-
freeze and 50% demineralized
water/distilled water. The use of other
types of coolant solutions may damage
your engine cooling system.Outside temperature
down to
Anti-
freezeDeminer-
alized
water/
distilled
water ÉC ÉF
þ35 þ30 50% 50%
WARNING
INever remove the radiator cap when
the engine is hot. Serious burns
could be caused by high pressure
fluid escaping from the radiator. Wait
until the engine and radiator cool
down.
ISee ªIf your vehicle overheatsº in the
ª6. In case of emergencyº section.
IThe radiator is equipped with a pres-
sure cap. To prevent engine damage,
use only a genuine NISSAN radiator
cap.
CHECKING ENGINE COOLANT
LEVELCheck the coolant level in the reservoir tank
when the engine is cold. If the coolant level is
below MIN, add coolant up to the MAX level. If
the reservoir tank is empty, check the coolant
level in the radiatorwhen the engine is cold.If
there is insufficient coolant in the radiator, fill the
radiator with coolant up to the filler opening and
also add it to the reservoir tank up to the MAX
level.
If the engine cooling system frequently
requires coolant, have it checked by your
NISSAN dealer.
SDI1445
ENGINE COOLING SYSTEM8-8
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CHANGING ENGINE COOLANTIMajor cooling system repairs should be per-
formed by your NISSAN dealer. The service
procedures can be found in the appropriate
NISSAN Service Manual.IImproper servicing can result in reduced
heater performance and engine overheating.
WARNING
ITo avoid being scalded, never change
the coolant when the engine is hot.
INever remove the radiator cap when
the engine is hot. Serious burns
could be caused by high pressure
fluid escaping from the radiator.
IAvoid direct skin contact with used
coolant. If skin contact is made, wash
thoroughly with soap or hand cleaner
as soon as possible.
IKeep coolant out of reach of children
and pets.
1. Open radiator drain plug at the bottom of
radiator, and remove radiator filler cap.
IBe careful not to allow coolant to con-
tact drive belts.
IWaste coolant must be disposed of
properly. Check your local regulations.
2. Close the radiator drain plug securely after
the coolant is drained.3. Fill the radiator slowly with the proper mixture
of anti-freeze solution and demineralized
water/distilled water. Fill the reservoir tank up
to the MAX level. Then install the radiator filler
cap.
4. Start the engine and warm it up until it
reaches normal operating temperature. Then
race the engine 2 or 3 times under no load.
Watch the engine coolant temperature
gauge for signs of overheating.
5. Stop the engine. After it completely cools
down, refill the radiator up to the filler open-
ing. Fill the reservoir tank up to the MAX level.
Check the drain plug for any sign of leakage.
6. Recheck the coolant level after the vehicle
has been driven for a day.
SDI1442
Maintenance and do-it-yourself
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Aftermarket fuel additivesNISSAN does not recommend the use of any
fuel additives (that is, fuel injector cleaner, oc-
tane booster, intake valve deposit removers,
etc.) which are sold commercially. Many of these
additives intended for gum, varnish or deposit
removal may contain active solvent or similar
ingredients that can be harmful to the fuel sys-
tem and engine.Octane rating tipsIn most parts of North America, you should use
unleaded gasoline with an octane rating of at
least 87 or 91 AKI (Anti-Knock Index) number.
However, you may use unleaded gasoline with
an octane rating as low as 85 AKI number in
these high altitude areas [over 4,000 ft (1,219
m)] such as: Colorado, Montana, New Mexico,
Utah, Wyoming, northeastern Nevada, southern
Idaho, western South Dakota, western Ne-
braska, 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 above stated
octane rating, or if you hear steady sparkknock while holding a steady speed on
level roads, have your dealer correct the
condition. 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 en-
countered, have your vehicle checked at a
NISSAN dealer or other competent service fa-
cility.
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 the
greatest fuel benefit when there is light
spark knock for a short time under heavy
engine load.9-4
Technical and consumer information
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