engine overheat TOYOTA 4RUNNER 1996 Owners Manual

Publication No. OM35679U
Part No. 01999-35679
Printed in Japan 04- 9902- 01
Quick index If a service reminder indicator or warning buzzer comes on 61 . . . . .
If your vehicle will not start 151
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If your engine stalls while driving 154 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
If your vehicle overheats 155
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If you have a flat tire 156
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If your vehicle needs to be towed 162 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tips for driving during break- in period 128 . . . . . . . . . . . . . . . . . . . . . . . . .
How to start the engine 139
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General maintenance 174
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Complete index 215
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Gas station information
Fuel type: UNLEADED gasoline, Research Octane Number 91 (Octane Rating 87) or
higher.
See page 128 for detailed information.
Fuel tank capacity: 70 L (18.5 gal., 15.4 lmp. gal.)
Engine oil: API SH, Energy- Conserving II'' multigrade engine oil or ILSAC multi grade
engine oil is recommended.
Use SAE 5W- 30 if normal temperatures are above -18 C (0 F).
See page 188 for detailed information.
Tire information: See pages 191 through 194.
Tire pressure: See page 209. U-
6
B

60
The gauge indicates the engine cool-
ant temperature when the ignition
switch is on. The engine operating
temperature will vary with changes inweather and engine load.
If the needle moves into the red zone, your engine is too hot. If your vehicle over-
heats, stop your vehicle and allow the en-
gine to cool.
Your vehicle may overheat during severe operating conditions, such as: Driving up a long hill on a hot day.
Reducing speed or stopping after high
speed driving.
Idling for a long period with the air con-
ditioning on in stop-and-go traffic.
Towing a trailer.
NOTICE
Do not remove the thermostat in
the engine cooling system as this
may cause the engine to overheat.
The thermostat is designed to con-trol the flow of coolant to keep the
temperature of the engine within the specified operating range.
Do not continue driving with anoverheated engine. See If yourvehicle overheatsº in Part 4.
The tachometer indicates engine
speed in thousands of rpm (revolu-
tions per minute). Use it while driving
to select correct shift points and to
prevent engine lugging and overrev-ving.
Driving with the engine running too fast
causes excessive engine wear and poor
fuel economy. Remember, in most cases
the slower the engine speed, the greater
the fuel economy.
NOTICE
Do not let the indicator needle get into the red zone. This may cause
severe engine damage.
Tachometer
Engine coolant temperature gauge

68
NOTICE
Be careful not to overrev the en-gine. Watch the tachometer to
keep engine rpm from going into the red zone. The approximatemaximum allowable speed for
each position is given below for
your reference:
2º 120 km/h (74 mph) . . . . . . . . . . . .
Lº 65 km/h (40 mph) . . . . . . . . . . . . .

Do not continue hill climbing or hard towing for a long time in the2º or Lº position. This may
cause severe automatic transmis-sion damage from overheating.To prevent such damage, Dº
position should be used for hill climbing or hard towing.
(d) Backing up
1. Bring the vehicle to a complete stop.
2. With the brake pedal held down with your foot, shift the selector lever to the Rº
position.
NOTICE
Never shift into reverse while the vehicle is moving.
(e) Parking
1. Bring the vehicle to a complete stop.
2. Pull the parking brake lever up fully to securely apply the parking brake.
3. With the brake pedal pressed down,
shift the selector lever to the Pº position.
While the vehicle is moving, never
attempt to move the selector lever
into Pº position under any circum-
stances. Serious mechanical dam-
age and loss of vehicle control mayresult. CAUTION
! (f) Good driving practice
If the transmission is repeatedly up-
shifted and downshifted between third
gear and overdrive when climbing a
gentle slope, the overdrive switch
should be turned off. Be sure to turn the switch on immediately afterward.
When towing a trailer, in order to main-
tain engine braking efficiency, do notuse overdrive.
Always keep your foot on the brake
pedal w hile stopped with the engine
running. This prevents the vehicle
from creeping. CAUTION
!
NOTICE
Do not hold the vehicle on an upgrade with the accelerator pedal.
It can cause the transmission tooverheat. Always use the brake pedal or parking brake.

72Vehicles with cruise controlÐWhen the
cruise control is being used, even if you
downshift the transmission by turning offthe overdrive switch, engine braking will
not be applied because the cruise control is not cancelled. For ways to decrease the vehicle speed,
see Cruise controlº in this chapter.
Be careful when downshifting on a
slippery surface. Abrupt shifting
could cause the vehicle to spin orskid.
CAUTION
!
(c) Using the 2º and Lº positions The 2º and Lº positions are used for
strong engine braking as described pre-
viously. With the selector lever in 2º or Lº, you
can start the vehicle in motion as with the
lever in Dº. With the selector lever in 2º, the vehicle
will start in the first gear and automatically
shift to the second gear.
With the selector lever in Lº, the trans-
mission is engaged in the first gear.
NOTICE
Be careful not to overrev the en- gine. Watch the tachometer to
keep engine rpm from going intothe red zone. The approximate
maximum allowable speed foreach position is given below for
your reference:
Front drive control lever in H2º or
H4º
3RZ-FE engine 2º 111 km/h (88 mph) . . . . . . . .
Lº 60 km/h (37 mph) . . . . . . . .
5VZ-FE engine
2º 118 km/h (73 mph). . . . . . . .
Lº 64 km/h (40 mph) . . . . . . . .
Front drive control lever in L4º 3RZ-FE engine 2º 43 km/h (26 mph) . . . . . . . . .
Lº 23 km/h (14 mph) . . . . . . . .
5VZ-FE engine 2º 46 km/h (28 mph) . . . . . . . . .
Lº 25 km/h (15 mph) . . . . . . . .
Do not continue hill climbing or
hard towing for a long time in the 2º
or Lº position. This may cause se- vere automatic transmission dam-age from overheating. To preventsuch damage, Dº position should be used in hill climbing or hard tow-ing.
(d) Backing up
1. Bring the vehicle to a complete stop.
2. With the brake pedal held down with your foot, shift the selector lever to the Rº
position.
NOTICE
Never shift into reverse while the vehicle is moving.
(e) Parking
1. Bring the vehicle to a complete stop.
2. Pull the parking brake lever fully to se- curely apply the parking brake.
3. With the brake pedal pressed down,
shift the selector lever to the P position.

73
While the vehicle is moving, never
attempt to move the selector lever
into Pº position under any circum-
stances. Serious mechanical dam-
age and loss of vehicle control mayresult.CAUTION
!
(f) Good driving practice If the transmission is repeatedly up-
shifted and downshifted between third
gear and overdrive when climbing a
gentle slope, the overdrive switch
should be turned off. Be sure to turn the switch on immediately afterward.
When towing a trailer, in order to main-
tain engine braking efficiency, do notuse overdrive.
Always keep your foot on the brake
pedal while stopped with the engine
running. This prevents the vehicle
from creeping. CAUTION
!
NOTICE
Do not hold the vehicle on an upgrade with the accelerator pedal.
It can cause the transmission tooverheat. Always use the brake pedal or parking brake.
(g) Driving in PWRº(Power) mode
In the PWRº mode, the transmission is shifted up and down at a higher vehicle
speed than in the NORMº (Normal) mode
and a more powerful acceleration is
achieved. To set the PWRº mode, push
in the driving pattern selector button. The
PWRº mode indicator light comes on.
For ordinary driving, Toyota recommends
using the NORMº mode to improve fuel
economy.
(h) If you cannot shift the selector lever
out of Pº position
If you cannot shift the selector lever from the Pº position even though the brake
pedal is depressed, use the shift lock
override lever. For instructions, see If you
cannot shift automatic transmission se- lector leverº in Part 4.
The shift pattern is as shown above.
Press the clutch pedal down fully while
shifting, and then release it slowly. Do not
rest your foot on the pedal while driving, because it will cause clutch trouble. And do not use the clutch to hold the vehicle
when stopped on an uphill gradeÐuse the
parking brake.
Manual transmission

130
If you plan to drive your Toyota in
another country... First,
comply with the vehicle registration
laws. Second, confirm the availability of the
correct fuel (unleaded and minimum oc- tane number).
The three-way catalytic converter is
an emission control device installed in
the exhaust system.
The purpose is to reduce pollutants in the exhaust gas.
CAUTION!
Keep people and combustible ma- terials away from the exhaust pipe
while the engine is running. The
exhaust gas is very hot.
Do not drive, idle or park your ve-
hicle over anything that might burn
easily such as grass, leaves, paper
or rags.
NOTICE
A large amount of unburned gases flowing into the three-way catalytic
converter may cause it to overheat and create a fire hazard. To preventthis and other damage, observe the following precautions:
Use only unleaded gasoline.
Do not drive with an extremelylow fuel level; running out of fuelcould cause the engine to misfire,
creating an excessive load on the
three-way catalytic converter.
Do not allow the engine to run at idle speed for more than 20 min- utes.
Avoid racing the engine.
Do not push-start or pull-start
your vehicle.
Do not turn off the ignition whilethe vehicle is moving.
Three-way catalytic converter
Operation in foreign countries

140Before starting the engine, be sure to fol-
low the instructions in (a) Before crank- ingº.
Normal starting procedure
The multiport fuel injection system/se-
quential multiport fuel injection system in
your engine automatically controls the
proper air-fuel mixture for starting. You can start a cold or hot engine as follows:
1. With your foot off the accelerator ped- al, crank the engine by turning the key to
STARTº. Release it when the enginestarts.
2. After
the engine runs for about 10 sec-
onds, you are ready to drive.
If the weather is below freezing, let the en-
gine warm up for a few minutes before driving.
If the engine stalls...
Simply restart it, using the correct proce- dure given in normal starting. If the engine will not startÐ
See If your vehicle will not startº in Part 4.
NOTICE
Do not crank for more than 15 sec-
onds at a time. This may overheat
the starter and wiring systems.
Do not race a cold engine.
If the engine becomes difficult to
start or stalls frequently, have theengine checked immediately.
Always slow down in gusty cross- winds. This will allow you much better control.
Drive slowly onto curbs and, if pos-
sible, at a right angle. Avoid drivingonto high, sharp-edged objects and
other road hazards. Failure to do so
can lead to severe tire damage result-
ing in tire bursts.
When parking on a hill, turn the front
wheels until they touch the curb so that
the vehicle will not roll. Apply the park-
ing brake, and place the transmission in Pº (automatic) or in first or reverse
(manual). If necessary, block thewheels.
Washing your vehicle or driving
through deep water may get the
brakes wet. To see whether they are
wet, check that there is no traffic near
you, and then press the pedal lightly. If
you do not feel a normal braking force,
the brakes are probably wet. To dry
them, drive the vehicle cautiously
while lightly pressing the brake pedal
with the parking brake pulled. If they
still do not work safely, pull to the side
of the road and call a T oyota dealer for
assistance.
(b) Starting the engine
Tips for driving in variousconditions

141

Four-wheel drive modelsÐToyota
recommends not using four-wheel
drive on dry hard-surfaced roads, be-
cause four-wheel driving will causeunnecessary noise and wear, and poor
fuel economy.
Four-wheel drive modelsÐIn cold
temperatures, noise may occur when
driving in two-wheel drive before the
transfer is warmed up. Therefore, first
drive in four-wheel drive until the
transfer is warmed up.
CAUTION!
Before driving off, make sure that
the parking brake is fully released
and the parking brake reminder
light is off.
Do not leave your vehicle unat- tended while the engine is run-ning.
Do not rest your foot on the brake
pedal while driving. It can cause
dangerous overheating, needless
wear, and poor fuel economy.
To drive down a long or steep hill,
reduce your speed and downshift.
Remember, if you ride the brakes
excessively, they may overheat
and not work properly.
Be careful when accelerating, up-
shifting, downshifting or braking
on a slippery surface. Sudden ac-
celeration or engine braking, could cause the vehicle to spin or skid.
Do not drive in excess of the speed
limit. Even if the legal speed limit
permits it, do not drive over 140
km/h (85 mph) unless your vehicle
has high-speed capability tires.
Driving over 140 km/h (85 mph)
may result in tire failure, loss of
control and possible injury. Be sure to consult a tire dealer to de-
termine whether the tires on your
vehicle are high-speed capability
tires or not before driving at such speeds.
Do not continue normal driving
when the brakes are wet. If they are
wet, your vehicle will require a lon-
ger stopping distance, and it may
pull to one side when the brakes
are applied. Also, the parking
brake will not hold the vehicle se-
curely. When driving your vehicle off-road,
please observe the following precautions
to ensure your driving enjoyment and to
help prevent the closure of areas to off-
road vehicles.
a. Drive your vehicle only in areas where
off-road vehicles are permitted to travel.
b. Respect private property. Get owner's
permission before entering private prop-
erty.
c. Do not enter areas that are closed.
Honor gates, barriers and signs that re-
strict travel.
d. Stay on established roads. When con- ditions are wet, driving techniques should
be changed or travel delayed to prevent
damage to roads.
For owners in U.S. mainland, Hawaii and Puerto Rico:
To obtain additional information pertaining
to driving your vehicle off-road, consultthe following organizations.
State and Local Parks and Recreation Departments
State Motor Vehicle Bureau
Recreational Vehicle Clubs
U.S. Forest Service and Bureau of
Land Management
Off-road driving precautions

147

Because stopping distance may be in-
creased, vehicle-to-vehicle distance
should be increased when towing a
trailer. For each 16 km/h (10 mph) ofspeed, allow at least one vehicle and
trailer length between you and the ve-
hicle ahead. Avoid sudden braking as you may skid, resulting in jackknifing
and loss of control. This is especially
true on wet or slippery surfaces.
Avoid jerky starts or sudden accelera-tion. If your vehicle has manual trans-
mission, prevent excessive clutch slip-
page by keeping engine rpm low and
not racing the engine. Always start out
in first gear.
Avoid jerky steering and sharp turns.
The trailer could hit your vehicle in a
tight turn. Slow down before making a
turn to avoid the necessity of suddenbraking.
Remember that when making a turn,the trailer wheels will be closer than the vehicle wheels to the inside of the
turn. Therefore, compensate for this
by making a larger than normal turning
radius with your vehicle.
Crosswinds and rough roads will ad-
versely affect handling of your vehicle
and trailer, causing sway. Pay atten-
tion to the rear from time to time to pre-
pare yourself for being passed by largetrucks or buses, which may cause your
vehicle and trailer to sway. If swaying
happens, firmly grip the steering wheel
and reduce speed immediately but
gradually. Never increase speed.
Steer straight ahead. If you make no
extreme correction with the steering or
brakes, the vehicle and trailer will sta-bilize.
Be careful when passing other ve-hicles. Passing requires considerable
distance. After passing a vehicle, do
not forget the length of your trailer and
be sure you have plenty of room be-
fore changing lanes.
In order to maintain engine braking ef-
ficiency, do not use fifth gear (manual
transmission) or overdrive (automatic transmission).
Because of the added load of the trail-
er, your vehicle's engine may overheat
on hot days (at temperatures over30 5C [85 5F]) when going up a long or
steep grade with a trailer. If the engine
coolant temperature gauge indicates
overheating, immediately turn off the
air conditioning (if in use), pull off the
road and stop in a safe spot. Refer to
If your vehicle overheatsº in Part 4 ofthis manual.
Always place wheel blocks under both
the vehicle and trailer wheels whenparking. Apply the parking brake firm-
ly. Put the transmission in Pº (auto-
matic) or in first or reverse (manual).
Avoid parking on a slope with a trailer, but if it cannot be avoided, do so only after performing the following:
1. Apply the brakes and hold.
2. Have someone place wheel blocks un-
der both the vehicle and trailer wheels.
3. When the wheel blocks are in place,
release your brakes slowly until the blocks
absorb the load.
4. Apply the parking brake firmly.
5. Shift into first or reverse (manual) or
Pº (automatic) and turn off the engine.

148When restarting out after parking on a slope:
1. With the transmission in Pº position
(automatic) or
the clutch pedal depressed
(manual), start the engine. (With an auto-
matic transmission, be sure to keep thebrake pedal depressed.)
2. Shift into gear.
3. Release the parking brake (also foot
brake on automatic transmission ve-
hicles) and slowly pull or back away from
the wheel blocks. Stop and apply yourbrakes.
4. Have someone retrieve the blocks.
CAUTION!
Do not exceed 72 km/h (45 mph) or
the posted towing speed limit,
whichever is lower. Because in-
stability (swaying) of a towing ve-
hicle-trailer combination usually
increases as the speed increases,
exceeding 72 km/h (45 mph) maycause loss of control.
Slow down and downshift before
descending steep or long downhill
grades. Do not make suddendownshifts.
Avoid holding the brake pedal
down too long or too frequently.
This could cause the brakes to
overheat and result in reduced
braking efficiency. Getting
more kilometers/mileage from a li-
ter/gallon of fuel is easyÐjust take it easy.
It will help make your vehicle last longer,
too. Here are some specific tips on how to
save money on both fuel and repairs: Keep your tires inflated at the cor- rect pressure. Underinflation causes
tire wear and wastes fuel. See Chapter
7-2 for instructions.
Do not carry unneeded weight in
your vehicle. Excess weight puts a
heavier load on the engine, causinggreater fuel consumption.
Avoid lengthy warm-up idling.
Once the engine is running smoothly,
begin drivingÐbut gently. Remember,
however, that on cold winter days this
may take a little longer.
Accelerate slowly and smoothly.
Avoid jackrabbit starts. Get into high
gear as quickly as possible.
Avoid long engine idling. If you have
a long wait and you are not in traffic, it
is better to turn off the engine and start
again later.
Avoid engine lug or overrevving.
Use a gear position suitable for the
road on which you are travelling.
How to save fuel and make
your vehicle last longer, too