1996 TOYOTA COROLLA cooling

68
The gauge indicates the engine cool-
ant temperature when the ignition
switch is on. The engine operating
temperature will vary with changes in
weather and engine load.
If the needle points to the red zone or high-
er, stop your vehicle and allow the engine
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
control the flow of coolant to keep
the temperature of the engine
within the specified operating
range.
Do not continue driving with an
overheated engine. See If your
vehicle overheatsº in Part 4.
The tachometer indicates engine
speed in thousands of rpm (revolutions
per minute). Use it while driving to se-
lect correct shift points and to prevent
engine lugging and overrevving.
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
ProCarManuals.com

95 If the indicator light flashes, contact your
Toyota dealer as soon as possible. There
may be a slippage of the drive belt or
trouble in the compressor. If this happens,
the air conditioning is automatically turned
off to avoid damage to the drive belt.
(b) Heating
1. Place the temperature control lever
anywhere except the LOW position.
When dehumidified heating is desired,
place the lever between the HIGH and
middle positions.
If cooler air is desired at face level for bi-
level operation, place the lever around the
middle.
2. Move the air intake control lever to the
OUTSIDE AIR position.
If quick circulation of heated air is desired,
move the lever to the RECIRCULATED
AIR position.
For normal use, it is best to keep the lever
in the OUTSIDE AIR position. Otherwise
the windows will fog up more easily.
3. Move the air flow control lever to the
FLOOR position.
If cooler air is desired at face level for bi-
level operation, place the lever to the BI-
LEVEL position.If the windshield fogs up easily, move the
lever to the FLOOR/WINDSHIELD posi-
tion.
For detailed information on air flow control
including other settings, see (f) Air flow
selectionº.
4. Move fan speed control lever any-
where except the OFFº position.
5. Leave the air conditioning on-off but-
ton in the ºOFFº position.
If dehumidifed heating is desired, press in
the air conditioning on-off button.
(c) Cooling
1. Place the temperature control lever
anywhere between the middle and LOW
positions.
If warmer air is desired at floor level for bi-
level operation, place the lever around the
middle.
2. Move the air intake control lever to the
OUTSIDE AIR position.
If quick circulation of cooled air is desired,
move the lever to the RECIRCULATED
AIR position.
For normal use, it is best to keep the lever
in the OUTSIDE AIR position.3. Move the air flow control lever to the
FACE position.
If warmer air is desired at floor level for bi-
level operation, place the lever to the BI-
LEVEL position.
For detailed information on air flow control
including other settings, see (f) Air flow
selectionº.
4. Move the fan speed control lever any-
where except the OFFº position.
5. Press in the air conditioning on-off but-
ton.
(d) Ventilation
1. Place the temperature control lever at
the LOW position.
2. Move the air intake control lever to the
OUTSIDE AIR position.
3. Move the air flow control lever to the
FACE position.
For detailed information on air flow control
including other settings, see (f) Air flow
selectionº.
4. Move the fan speed control lever any-
where except the OFFº position.
5. Leave the air conditioning on-off but-
ton in the OFFº position.ProCarManuals.com

96(e) Windshield defogging and defrost-
ing
To remove interior fog on the windshield:
1. Place the temperature control lever at
any position.
2. Move the air intake control lever to the
OUTSIDE AIR position.
3. Move the air flow control lever to the
WINDSHIELD position.
For detailed information on air flow con-
trol, see (f) Air flow selectionº.
4. Move fan speed control lever any-
where except the OFFº position.
5. Press in the air conditioning on-off but-
ton.
To remove frost or exterior fog on the
windshield:
1. Place the temperature control lever at
the HIGH position.
2. Move the air intake control lever to the
OUTSIDE AIR position.
3. Move the air flow control lever to the
WINDSHIELD position.
For detailed information on air flow con-
trol, see (f) Air flow selectionº.
4. Move fan speed control lever to the
HIº position.
5. Leave the air conditioning on-off but-
ton in the OFF position.(f) Air flow selection
FACE positionÐThis position directs the
air flow to face level.
BI-LEVELÐThis position directs the air
flow to face level and floor. Except in ven-
tilation, the air to the floor is slightly warm-
er than that to the face level.
FLOOR positionÐThis position directs
the air flow mostly to the floor.
FLOOR / WINDSHIELD position Ð This
position directs the air flow to the wind-
shield and front side windows as well as
the floor.
WINDSHIELD positionÐThis position di-
rects the air flow mostly to the windshield,
front side windows.
Do not use the WINDSHIELD position
during cooling operation in extremely hu-
mid weather. The difference between the
temperature of the outside air and that of
the windshield could cause the outer sur-
face of the windshield to fog up blocking
your vision.
(g) Operating tips

Be sure the air inlet grilles in front of the
windshield are not blocked by leaves
or other obstructions.
If air flow control is not satisfactory,
check the side vents. (See Side
ventsº after Heater controlsº.)

To help cool down the interior after
parking in the hot sun, drive for the first
few minutes with the windows open.
After the excess heat has blown away,
close the windows.

When driving on dusty roads, close all
windows. If dust thrown up by the ve-
hicle is still drawn into the vehicle after
closing the windows, it is recom-
mended that the air intake control le-
ver be set to the OUTSIDE AIR posi-
tion and the fan speed control lever
anywhere except the OFFº position.

If following another vehicle on a dusty
road, or driving in windy and dusty con-
ditions, it is recommened that the air
intake control lever be temporarily set
to the RECIRCULATED AIR position,
which will close off the outside pas-
sage and prevent outside air and dust
from entering the vehicle interior.ProCarManuals.com

108
CAUTION!

Avoid inhaling the engine exhaust.
It contains carbon monoxide,
which is a colorless and odorless
gas. It can cause unconsciousness
or even death.

Make sure the exhaust system has
no holes or loose connections.
The system should be checked
from time to time. If you hit some-
thing, or notice a change in the
sound of the exhaust, have the sys-
tem checked immediately.

Do not run the engine in a garage
or enclosed area except for the
time needed to drive the vehicle in
or out. The exhaust gases cannot
escape, making this a particularly
dangerous situation.

Do not remain for a long time in a
parked vehicle with the engine run-
ning. If it is unavoidable, however,
do so only in an unconfined area
and adjust the heating or cooling
system to force outside air into the
vehicle.

Keep the trunk lid or back door
closed while driving. An open or
unsealed trunk lid or back door
may cause exhaust gases to be
drawn into the vehicle. If you must
drive with the trunk lid or back door
open to accommodate a large ob-
ject, close the windows, open all
the instrument panel vents and
have the heating or cooling system
deliver fresh air into the vehicle by
turning the fan to high speed with
the air intake control lever set at the
OUTSIDE AIR position.

To allow proper operation of your
vehicle's ventilation system, keep
the inlet grilles in front of the wind-
shield clear of snow, leaves, or oth-
er obstructions.

If you smell exhaust fumes in the ve-
hicle, drive with the windows open
and the trunk lid or back door
closed. Have the cause immediately
located and corrected.FUNCTIONS OF ENGINE OIL
Engine oil has the primary functions of lu-
bricating and cooling the inside of the en-
gine, and plays a major role in maintaining
the engine in proper working order.
ENGINE OIL CONSUMPTION
It is normal that an engine should con-
sume some engine oil during normal
engine operation. The causes of oil
consumption in a normal engine are
as follows.

Oil is used to lubricate pistons, piston
rings and cylinders. A thin film of oil is
left on the cylinder wall when a piston
moves downwards in the cylinder.
High negative pressure generated
when the vehicle is decelerating sucks
some of this oil into the combustion
chamber. This oil as well as some part
of the oil film left on the cylinder wall is
burned by the high temperature com-
bustion gases during the combustion
process.

Oil is also used to lubricate the stems
of the intake valves. Some of this oil is
sucked into the combustion chamber
together with the intake air and is
burned along with the fuel. High tem-
perature exhaust gases also burn the
oil used to lubricate the exhaust valve
stems.
Facts about engine oil
consumption Engine exhaust cautions
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128If your engine stalls while driving0
1. Reduce your speed gradually, keeping
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 If your ve-
hicle will not startº.
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.CAUTION
!
If your engine coolant temperature
gauge indicates overheating, if you
experience a loss of power, or if you
hear a loud knocking or pinging noise,
the engine has probably overheated.
You should follow this procedure0
1. Pull safely off the road, stop the vehicle
and turn on your emergency flashers. Put
the transmission in Pº (automatic) or neu-
tral (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 subsides before opening
the hood. If there is no coolant boiling over
or steam, leave the engine running and
make sure the electric cooling fan is oper-
ating. If it is not, turn the ignition off.
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.CAUTION
!
3. Visually check to see if the engine drive
belt (water pump 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.
When the engine is running, keep
hands and clothing away from the
moving fan and engine drive belts.CAUTION
!
4. If the engine drive belt is broken or the
coolant is leaking, stop the engine imme-
diately. Call a Toyota dealer for assis-
tance.
5. If the engine drive belt is O.K. and
there are no obvious leaks, check the
coolant reservoir. If it is dry, add coolant to
the reservoir while the engine is running.
Fill it about half full.
Do not attempt to remove the radia-
tor cap when the engine and radiator
are hot. Serious injury could result
from scalding hot fluid and steam
blown out under pressure.CAUTION
!
6. After the engine coolant temperature
has cooled to normal, again check the
coolant level in the reservoir. If necessary,
bring it up to half full again. Serious cool-
ant loss indicates a leak in the system.
You should have it checked as soon as
possible at your Toyota dealer.
If your engine stalls while
drivingIf your vehicle overheats
ProCarManuals.com

151 If you perform maintenance by your-
self, be sure to follow the correct pro-
cedure given in this part.
You should be aware that improper or in-
complete servicing may result in operat-
ing problems.
Performing do-it-yourself maintenance
during the warranty period may affect
your warranty coverage. Read the sepa-
rate 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 Parts and
toolsº.
Utmost care should be taken when work-
ing on your vehicle to prevent accidental
injury. Here are a few precautions that you
should be especially careful to observe:

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 advisable.)CAUTION
!

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 remove
the radiator cap or loosen the drain
plugs to prevent burning yourself.

Do not smoke, cause sparks or al-
low open flames around fuel or the
battery. Their fumes are flamable.

Be extremely cautious when work-
ing on the battery. It contains poi-
sonous and corrosive sulfuric
acid.

Do not get under your vehicle with
just the body jack supporting it. Al-
ways use automotive jack stands
or other solid supports.

Be sure that the ignition is off if you
work near the electric cooling fans
or radiator grille. With the ignition
on, the electric cooling fan may au-
tomatically start to run if the air
conditioning is on.
Use eye protection whenever you
work on or under your vehicle
where you may be exposed to fly-
ing or falling material, 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 pro-
longed 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 disposal.
Do-it-yourself service
precautions
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157 Look at the see-through coolant res-
ervoir when the engine is cold. The
coolant level is satisfactory if it is be-
tween the FULLº and LOWº 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. However, if the
level is on or below the LOWº line, add
coolant. Bring the level up to the FULLº
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 ra-
diator, 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 en-
gine is hot.Coolant type selection
Your coolant must contain ethylene-gly-
col antifreeze. In addition to preventing
freezing and subsequent damage to the
engine, this will also prevent corrosion.
Further supplemental inhibitors or addi-
tives are neither needed nor recom-
mended.
Read the antifreeze container for informa-
tion on freeze protection. Follow the
manufacturer 's directions for how much
to mix with water. The total capacity of the
cooling system is given in Part 8. We rec-
ommend 50% solution be used for your
Toyota, or a sufficient quantity to provide
protection to about -35C (-31F).
Do not use alcohol type antifreeze
or plain water alone.
NOTICE
To check the fluid level, simply look at
the see-through reservoir. The level
should be between the MAXº and
MINº lines on the reservoir.
It is normal for the brake fluid level to go
down slightly as the brake pads wear. So
be sure to keep the reservoir filled.
If the reservoir needs frequent refilling, it
may indicate a serious mechanical prob-
lem.
Checking brake fluid Checking the engine coolant
level
ProCarManuals.com

162
CAUTION!
Do not drive with the snow tires in-
correctly inflated.
Never drive over 120 km/h (75 mph)
with any type of snow tires.
TIRE CHAIN SELECTION
Use the tire chains of correct size and
type.
Use SAE Class Sº type radial tire chains
except radial cable chains or V-bar type
chains.
Regulations regarding the use of tire
chains vary according to location or
type of road, so always check them be-
fore installing chains.
CHAIN INSTALLATION
Install the chains on the front tires as
tightly as possible. Do not use tire
chains on the rear tires. Retighten
chains after driving 0.5'1.0 km
(1/4'1/2 mile).
When installing chains on your tires, care-
fully follow the instructions of the chain
manufacturer.
If wheel covers are used, they will be
scratched by the chain band, so remove
the covers before putting on the chains.
CAUTION!
Do not exceed 50 km/h (30 mph) or
the chain manufacturer's recom-
mended speed limit, whichever is
lower.
Drive carefully avoiding bumps,
holes, and sharp turns, which may
cause the vehicle to bounce.
Avoid sharp turns or locked-wheel
braking, as use of chains may ad-
versely affect vehicle handling.
Do not attempt to use a tire chain on
the compact spare tire, as it may
result in damage to the vehicle as
well as the tire.
NOTICE
WHEN TO REPLACE YOUR WHEELS
If you have wheel damage such as
bending, cracks or heavy corrosion,
the wheel should be replaced.
If you fail to replace damaged wheels, the
tire may slip off the wheel or they may
cause loss of handling control.
WHEEL SELECTION
When replacing wheels, care should
be taken to ensure that the wheels are
replaced by ones with the same load
capacity, diameter, rim width, and off-
set.
This must be observed on compact spare
tires, too.
Correct replacement wheels are available
at your Toyota dealer.
A wheel of a different size or type may ad-
versely affect handling, wheel and bearing
life, brake cooling, speedometer/odometer
calibration, stopping ability, headlight aim,
bumper height, vehicle ground clearance,
and tire or snow chain clearance to the
body and chassis.
Replacing wheels
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