1997 NISSAN PATHFINDER engine overheat

The engine cooling system is filled at the
factory with a high-quality, year-round, anti-
freeze coolant solution. The anti-freeze solu-
tion contains rust and corrosion inhibitors,
therefore additional cooling system additives
are not necessary.
When adding or replacing the coolant,
be sure to use an ethylene glycol anti-
freeze with the proper mixture ratio of
50% anti freeze and 50% distilled water.
The use of other types of coolant solu-
tions may damage your engine cooling
system.
Outside temperature
down toAnti-
freezeDistilled
water
ÉC ÉF
þ35 þ30 50% 50%
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. Serious burns could be caused
by high pressure fluid escaping from
the radiator. See precautions in ªIf
your vehicle overheatsº found in the
ªIn case of emergencyº section.
IThe radiator is equipped with a pres-
sure cap. Use a NISSAN genuine cap
or its equivalent when replacement is
required.
CHECKING COOLANT LEVEL
With coolant reservoir
Check the coolant level in the reservoir tank
when the engine is cold. If the coolant level is
below the ªMINº level, add coolant to the
ªMAXº 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 ªMAXº level.
SDI0378
ENGINE COOLING SYSTEM
7-4
Z01.2.1/R50-DX

If the engine cooling system frequently
requires coolant, have it checked by your
NISSAN dealer.
CHANGING ENGINE COOLANT
IMajor cooling system repairs should be
performed 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 overheat-
ing.
ITo avoid the danger of 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.
SDI0485SDI0486
7-5
Z01.2.1/R50-DX

1. Perform the following procedure to open
the heater water cock.
ITurn the ignition key from ªOFFº to ªONº.
IMove the heater or air conditioner tem-
perature control dial to the maximum hot
position then turn the ignition key to
ªOFFº.
2. Open the radiator drain plug and radiator
cap.
Open the drain plugs on the engine block.3. Open the air release plug to drain the
coolant.
4. Flush the cooling system by running fresh
water through the radiator.
5. Close the radiator drain plug and engine
block drain plugs securely.
6. See the ªTechnical informationº section for
cooling system capacity.
Fill the radiator slowly with the proper mix-
ture of coolant and water. Fill the reservoir
tank slowly up to the ªMAXº level. Then
install the radiator cap and close the air
release plug.7. 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 coolant temperature gauge for
signs of overheating.
8. Stop the engine. After it completely cools
down, refill the radiator up to the filler
opening. Fill the reservoir tank up the
ªMAXº level.
9. Check the radiator drain plug and engine
block drain plugs for any sign of leakage.
SDI0409SDI0410SDI0419
7-6
Z01.2.1/R50-DX

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 ªspark knockº. (ªSpark
knockº 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 the
greatest fuel benefit when there is lightspark knock for a short time.
9-5
Z01.2.1/R50-DX

trailer hitch mounting bolts are se-
curely fastened.
ITo reduce the possibility of additional
damage if your vehicle is struck from
the rear, where practical, remove the
hitch when not in use. Remove the
receiver when not in use.
Tire pressures
IWhen towing a trailer, inflate the vehicle
tires to the recommended cold tire pressure
indicated on the tire placard (affixed to the
glove box lid).
ITrailer tire condition, size, load rating and
proper inflation pressure should be in ac-
cordance with the trailer and tire manufac-
turers' specifications.
Safety chain
Always use a suitable chain between your
vehicle and the trailer. The chain should be
crossed and should be attached to the hitch,
not to the vehicle bumper or axle. Be sure to
leave enough slack in the chain to permit
turning corners.
Trailer lights
Trailer lights should comply with Federaland/or local regulations.
When wiring vehicle for towing connection,
connect stop and tail light pickup into the
vehicle electrical circuit at point between
the sensor and stop light switch or light
switch.
Trailer brakes
If your trailer is equipped with a braking sys-
tem, make sure it conforms to Federal and/or
local regulations and that it is properly in-
stalled.
Never connect a trailer brake system
directly to the vehicle brake system.
Trailer towing tips
In order to gain skill and an understanding of
the vehicle's behavior, you should practice
turning, stopping and backing up in an area
which is free from traffic. Steering stability and
braking performance will be somewhat differ-
ent than under normal driving conditions.
IAlways secure items in the trailer to prevent
load shift while driving.IAvoid abrupt starts, acceleration or stops.
IAvoid sharp turns or lane changes.
IAlways drive your vehicle at a moderate
speed.
IAlways 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 automatic transmission, first block the
wheels and apply the parking brake, and
then move the transmission shift lever into
the ªPº position. If you move the shift lever
to the ªPº position before blocking the
wheels and applying the parking brake,
transmission damage could occur.
IWhen going down a hill, shift into a lower
gear and use the engine braking effect.
When ascending a long grade, downshift
the transmission to a lower gear and reduce
speed to reduce chances of engine over-
loading and/or overheating.
However, for long steep grades, do not stay in
1st or 2nd gear when driving above 35 MPH
(56 km/h).
IIf the engine 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
9-19
Z01.2.1/R50-DX

Drinking alcohol/drugs and driving .............. 4-4
Driving safety precautions ......................... 4-21
Driving with automatic transmission............ 4-7
Driving with manual transmission ............. 4-11
On-pavement and off-road driving
precautions .................................................. 4-4
Precautions when starting and driving ........ 4-2
E
Economy hints ................................................ 4-17
Emission control information label .................. 9-14
Emission control system warranty .................. 9-20
Engine ............................................................. 9-10
Before starting the engine ........................... 4-7
Changing engine coolant ............................ 7-5
Changing engine oil .................................... 7-8
Checking engine oil level ............................ 7-7
Engine coolant temperature gauge ............. 1-4
Engine cooling system ................................ 7-4
Engine oil..................................................... 7-7
Engine oil and oil filter
recommendation .......................................... 9-6
Engine serial number ................................ 9-13
Starting the engine .................................... 4-13
Exhaust gas (Carbon monoxide) ...................... 4-2
Explanation of maintenance items.................. 8-10
F
Flat tire .............................................................. 5-2
Fluid
Automatic transmission fluid ....................... 7-9
Brake and clutch fluid................................ 7-11Power steering fluid................................... 7-11
Window washer fluid ................................. 7-12
F.M.V.S.S. certification label........................... 9-14
Front fog light switch ...................................... 1-19
Front seats ...................................................... 2-12
Fuel
Capacities and recommended
fuel/lubricants .............................................. 9-2
Fuel filler cap ............................................. 2-11
Fuel filler lid lock ....................................... 2-10
Fuel gauge .................................................. 1-5
Fuel recommendation.................................. 9-4
Fuses .............................................................. 7-20
G
Gauge
Engine coolant temperature gauge ............. 1-4
Fuel gauge .................................................. 1-5
Meters and gauges ..................................... 1-3
General maintenance ....................................... 8-2
Glasses case .................................................. 1-24
Glove box lock ................................................ 2-10
H
Hazard warning flasher switch........................ 1-19
Head restraint ................................................. 2-15
Headlight and turn signal switch..................... 1-15
Headlights ....................................................... 7-21
Heated seats (If so equipped) ........................ 1-20
Heater and air conditioner ................................ 3-3
Heater operation ........................................ 3-4, 3-8Hood release .................................................... 2-9
I
If your vehicle is ever stolen ........................... 1-35
If your vehicle overheats .................................. 5-9
Ignition switch ................................................... 4-5
Inside mirror .................................................... 2-44
Instrument brightness control ......................... 1-18
Integrated HomeLink
transmitter
(If so equipped)............................................... 1-31
Interior light ..................................................... 1-30
J
Jump starting ........................................... 5-7, 7-13
K
Key .................................................................... 2-2
L
Light
Front fog light switch ................................. 1-19
Headlight and turn signal switch ............... 1-15
Headlights.................................................. 7-21
Interior light................................................ 1-30
Light bulbs ................................................. 7-21
Other lights ................................................ 7-23
Spot light ................................................... 1-31
Supplemental air bag warning light........... 2-25
Vanity mirror light ...................................... 1-31
Warning/indicator light and buzzer.............. 1-9
10-2
Z01.2.1/R50-DX

Lock
Anti-lock brake system .............................. 4-25
Back door locks ........................................... 2-8
Child safety rear door lock .......................... 2-3
Door locks ................................................... 2-2
Fuel filler lid lock ....................................... 2-10
Glove box lock........................................... 2-10
Power door lock .......................................... 2-3
Rear window locks ...................................... 2-8
Luggage (See ªvehicle loading informationº)
Luggage board and box ................................. 1-26
Luggage hooks ............................................... 2-45
Luggage net .................................................... 2-44
Luggage rack .................................................. 2-46
M
Maintenance
Explanation of maintenance items ............ 8-10
General maintenance .................................. 8-2
Periodic maintenance .................................. 8-5
Readiness for inspection/maintenance (I/M)
test ............................................................. 9-22
Seat belt maintenance .............................. 2-34
Manual antenna .............................................. 3-27
Meters and gauges ........................................... 1-3
Mirror
Inside mirror .............................................. 2-44
Outside mirror control................................ 2-42
Outside heated defroster
(If so equipped) ......................................... 1-18
Outside mirrors .......................................... 2-43
Vanity mirror light ...................................... 1-30Multi-remote control system (If so equipped) ... 2-4
O
Oil
Changing engine oil .................................... 7-8
Changing oil filter ........................................ 7-9
Checking engine oil level ............................ 7-7
Engine oil..................................................... 7-7
Engine oil and oil filter
recommendation .......................................... 9-6
On-pavement and off-road driving precautions .. 4-
4
Operating the transmitter ................................ 1-33
Outside mirror control ..................................... 2-42
Outside heated defroster (If so
equipped) ........................................................ 1-18
Outside mirrors ............................................... 2-43
Overheat
If your vehicle overheats ............................. 5-9
P
Parking ............................................................ 4-23
Parking brake ................................... 4-13, 7-18
Periodic maintenance ....................................... 8-5
Power
Power antenna (If so equipped)................ 3-26
Power door lock .......................................... 2-3
Power socket ............................................. 1-22
Power steering fluid................................... 7-11
Power steering system .............................. 4-24
Power support seat ................................... 2-14
Power window ........................................... 1-27Precautions ....................................................... 7-2
Driving safety precautions ......................... 4-21
On-pavement and off-road driving
precautions .................................................. 4-4
Precautions on seat belt usage ................ 2-27
Precautions when starting and driving ........ 4-2
Programming problem diagnosis .................... 1-33
Programming the HomeLink
transmitter ....................................................... 1-32
Protecting against corrosion ............................. 6-5
Push starting ..................................................... 5-9
R
Radio............................................................... 3-15
AM-FM radio with cassette player and compact
disc player (Bose audio system) ............... 3-20
AM-FM radio with compact disc
player ......................................................... 3-15
CB radio or car phone............................... 3-27
Radio operation ......................................... 3-22
Readiness for inspection/maintenance (I/M) test
(For U.S.A.)..................................................... 9-21
Rear seats ...................................................... 2-16
Rear window defroster switch......................... 1-18
Rear window locks ............................................ 2-8
Rear window wiper and washer switch .......... 1-17
Recommended SAE viscosity number ............. 9-8
Refrigerant recommendation ............................ 9-9
Reporting safety defects (For U.S.A.) ............ 9-20
10-3
Z01.2.1/R50-DX