radiator TOYOTA 4RUNNER 1998 Owners Manual

4RUNNER (1998)
The driver and all passengers
should fasten their seat belts
whenever the vehicle is moving.
NOTICE
If driving through water, such
as when crossing shallowstreams, first check the depth of the water and the bottom of
the river bed for firmness. Driveslowly and avoid deep water.
Take all necessary safety mea-
sures to ensure that water dam-age to the engine or other com- ponents does not occur.
Water entering the engine airintake will cause severe engine
damage.
Water can wash the grease fromwheel bearings, causing rustingand premature failure, and mayalso enter the differentials,
transmission and transfer case,reducing the gear oil's lubrica-ting qualities.
Sand and mud that has accum-
lated in brake drums andaround brake discs may affectbraking efficiency and may dam-
age brake system components.
Always perform a maintenanceinspection after each day of
off- road driving that has takenyou through rough terrain,sand, mud, or water. For sche-
duled maintenance information,refer to the separate ºOwner's Manual Supplement/Maintenance
Scheduleº.
Winter driving tips
Make sure you have ethylene- glycol
antifreeze in the radiator.
NOTICE
Do not use alcohol type anti-freeze.
Check the condition of the battery
and cables.
Cold temperatures reduce the capacity
of any battery, so it must be in top
shape to provide enough power for
winter starting. Chapter 7- 3 tells you
how to visually inspect the battery.
Your Toyota dealer and most service
stations will be pleased to check the
level of charge.
Make sure the engine oil viscosity
is suitable for the cold weather.
See Chapter 7- 2 for recommended
viscosity. Leaving a heavy summer oil
in your vehicle during winter months
may cause harder starting. If you are
not sure about which oil to use, call
your Toyota dealerÐhe will be pleased
to help.
Keep the door locks from freezing.
Squirt lock de- icer or glycerine into
the locks to keep them from freezing.
To open a frozen lock, try heating the
key before inserting it.

4RUNNER (1998)
CAUTION
When making the connections, to
avoid serious injury, do not lean
over the battery or accidentally
let the jumper cables or clamps
touch anything except the correct
battery terminals or the ground.
5. Start your engine in the normal
way. After starting, run it at about
2000 rpm for several minutes with
the accelerator pedal lightly de-
pressed.
6. Carefully disconnect the cables in the exact reverse order: the nega-
tive cable and then the positive
cable.
7. Carefully dispose of the battery cover clothsÐthey may now con-
tain sulfuric acid.
8. If removed, replace all the battery vent plugs.
If the cause of your battery discharg-
ing is not apparent (for example,
lights left on), you should have it
checked. If your engine stalls while driving...
1. Reduce your speed gradually, keep- ing a straight line. Move cautiously
off the road to a safe place.
2. Turn on your emergency flashers.
3. Try starting the engine again.
If the engine will not start, see ºIf
your vehicle will not startº.
CAUTION
If the engine is not running, the
power assist for the brakes and
steering will not work so steering
and braking will be much harder
than usual.
If your vehicle overheats
If your engine coolant temperature
gauge indicates overheating, if you
experience a loss of power, or if
you hear a loud knocking or ping-
ing noise, the engine has probably
overheated. You should follow this
procedure... 1. Pull safely off the road, stop the vehicle and turn on your emergen-
cy flashers. Put the transmission in
ºPº (automatic) or neutral (manual)
and apply the parking brake. Turn
off the air conditioning if it is being
used.
2. If coolant or steam is boiling out of the radiator or reservoir, stop the
engine. Wait until the steam sub-
sides before opening the hood. If
there is no coolant boiling over or
steam, leave the engine running.
CAUTION
To help avoid personal injury,
keep the hood closed until there
is no steam. Escaping steam or
coolant is a sign of very high
pressure.
If your engine stalls while
driving

4RUNNER (1998)
3. Visually check to see if the engine drive belt (fan belt) is broken or
loose. Look for obvious coolant
leaks from the radiator, hoses, and
under the vehicle. However, note
that water draining from the air
conditioning is normal if it has
been used.
CAUTION
When the engine is running, keep
hands and clothing away from the
moving fan and engine drive
belts.
4. If the engine drive belt is brokenor the coolant is leaking, stop the
engine immediately. Call a Toyota
dealer for assistance.
5. If the engine drive belt is O.K. and there are no obvious leaks, you
may help the engine cool down
more quickly by running it at about
1500 rpm for a few minutes with
the accelerator pedal lightly de-
pressed.
6. Check the coolant reservoir. If it is dry, add coolant to the reservoir
while the engine is running. Fill it
about half full.
CAUTION
Do not attempt to remove the ra-
diator cap when the engine and
radiator are hot. Serious injury
could result from scalding hot
fluid and steam blown out under
pressure.
7. After the engine coolant tempera-ture has cooled to normal, again
check the coolant level in the res-
ervoir. If necessary, bring it up to
half full again. Serious coolant loss
indicates a leak in the system. You
should have it checked as soon as
possible at your Toyota dealer. If you have a flat tireÐ
1. Reduce your speed gradually, keep- ing a straight line. Move cautiously
off the road to a safe place well
away from the traffic. Avoid stop-
ping on the center divider of a
highway. Park on a level spot with
firm ground.
2. Stop the engine and turn on your emergency flashers.
3. Firmly set the parking brake and put the transmission in ºPº (auto-
matic) or reverse (manual).
4. Have everyone get out of the ve- hicle on the side away from traffic.
5. Read the following instructions thoroughly.
CAUTION
When jacking, be sure to observe
the following to reduce the possi-
bility of personal injury: Follow jacking instructions.
Do not start or run the engine
while your vehicle is supported
by the jack.

4RUNNER (1998)
If you perform maintenance by
yourself, be sure to follow the cor-
rect procedure given in this part.
You should be aware that improper or
incomplete servicing may result in op-
erating problems.
Performing do- it- yourself maintenance
during the warranty period may affect
your warranty coverage. Read the
separate Toyota Warranty statement
for details and suggestions.
This part gives instructions only for
those items that are relatively easy
for an owner to perform. As explained
in Part 6, there are still a number of
items that must be done by a qualified
technician with special tools.
For information on tools and parts for
do- it- yourself maintenance, see ºParts
and toolsº.
Utmost care should be taken when
working on your vehicle to prevent
accidental injury. Here are a few pre-
cautions that you should be especially
careful to observe:
CAUTION
When the engine is running,
keep hands, clothing, and tools
away from the moving fan and
engine drive belts. (Removing
rings, watches, and ties is ad-
visable.)
Right after driving, the engine
compartmentÐthe engine, radia-
tor, exhaust manifold, power
steering fluid reservoir and
spark plug boots, etc.Ðwill be
hot. So be careful not to touch
them. Oil, fluids and spark
plugs may also be hot.
If the engine is hot, do not re-
move the radiator cap or loosen
the drain plugs to prevent burn-
ing yourself.
Do not smoke, cause sparks or
allow open flames around fuel
or the battery. Their fumes are
flammable.
Be extremely cautious when
working on the battery. It con-
tains poisonous and corrosive
sulfuric acid.
Do not get under your vehicle
with just the body jack support-
ing it. Always use automotive
jack stands or other solid sup-
ports.
Do- it- yourself service
precautions

4RUNNER (1998)
Use eye protection whenever
you work on or under your ve-
hicle where you may be ex-
posed to flying or falling mate-
rial, fluid spray, etc.
Used engine oil contains poten-
tially harmful contaminants
which may cause skin disorders
such as inflammation or skin
cancer, so care should be taken
to avoid prolonged and repeated
contact with it. To remove used
engine oil from your skin, wash
thoroughly with soap and water.
Do not leave used oil within the
reach of children.
Dispose of used oil and filter
only in a safe and acceptable
manner. Do not dispose of used
oil and filter in household
trash, in sewers or onto the
ground. Call your dealer or a
service station for information
concerning recycling or dispos-
al.NOTICE
Remember that battery and igni-
tion cables carry high currentsor voltages. Be careful of acci-dentally causing a short circuit.
Add only demineralized or dis-tilled water to fill the radiator.And if you spill some of the
coolant, be sure to wash it offwith water to prevent it from
damaging the parts or paint.
Do not allow dirt or anythingelse to fall through the spark
plug holes.
Do not pry the outer electrode
of a spark plug against the cen-ter electrode.
Use only spark plugs of the
specified type. Using othertypes will cause engine damage,loss of performance or radio
noise.
Do not overfill automatic trans-mission fluid, or the transmis-sion could be damaged.
Do not drive with the air clean-
er filter removed, or excessiveengine wear could result. Alsobackfiring could cause a fire in
the engine compartment.
Be careful not to scratch theglass surface with the wiper
frame.
When closing the engine hood,check to see that you have notforgotten any tools, rags, etc.

4RUNNER (1998)
The top portion of the label shows the
oil quality by API (American Petroleum
Institute) designations such as SJ.
The center portion of the label shows
the SAE
viscosity grade such as SAE 5W- 30.
ºEnergy- Conservingº shown in the
lower portion, indicates that the oil
has fuel- saving capab ilities.
The ILSAC (International Lubricant
Standardization and Approval Commit-
tee) Certification Mark is displayed on
the front of the container. Look at the see- through coolant
reservoir when the engine is cold.
The coolant level is satisfactory if
it is between the ºF (Full)º and ºL
(Low)º lines on the reservoir. If the
level is low, add ethylene- glycol
type coolant.
The coolant level in the reservoir will
vary with engine temperature. Howev-
er, if the level is on or below the ºLº
line, add coolant. Bring the level up
to the ºFº line.
Use only ethylene- glycol type coolant.
See information in the next column.
If the coolant level drops within a
short time after replenishing, there
may be a leak in the system. Visually
check the radiator, hoses, radiator cap
and drain cock and water pump.
If you can find no leak, have your
Toyota dealer test the cap pressure
and check for leaks in the cooling
system.
CAUTION
To prevent burning yourself, do
not remove the radiator cap when
the engine is hot.
Coolant type selection
Your coolant must contain ethylene-
glycol antifreeze. In addition to pre-
venting freezing and subsequent dam-
age to the engine, this will also
prevent corrosion. Further supplemen-
tal inhibitors or additives are neither
needed nor recommended.
Read the antifreeze container for in-
formation on freeze protection. Follow
the manufacturer 's directions for how
much to mix with water. The total ca-
pacity of the cooling system is given
in Part 8. We recommend 50% solu-
tion be used for your Toyota, or a
sufficient quantity to provide protection
to about -35
C (- 31 F).
NOTICE
Do not use alcohol type antifreeze
or plain water alone.
Checking the engine coolan
level