TOYOTA SUPRA 1996 Owners Manual

149
Engine compartment overview (2JZ-GTE engine)

150
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 andtoolsº.
Utmost care should be taken when work-
ing on your vehicle to prevent accidental
injury. Here are a few pr ecautions that you
should be especially careful to observe:
Do-it-yourself service precautions
Fuse locations

151
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.)
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 flam- mable.
Be extremely cautious when
working on the battery. It contains
poisonous and corrosive sulfuricacid.
Do not get under your vehicle with
just the body jack supporting it.
Always use automotive jack
stands or other solid supports. CAUTION
!
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 will au-
tomatically start to run if the engine
coolant temperature is high and/or
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 potential-
ly 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 fil-
ter in household trash, in sewers
or onto the ground. Call your deal-
er or a service station for informa-
tion concerning recycling or dis- posal.
Remember that battery and igni-
tion cables carry high currents or
voltages. Be careful of accidental-
ly causing a short circuit.
Add only demineralized or dis-tilled water to fill the radiator. And
if you spill some of the coolant, besure to wash it off with water to
prevent it from damaging the
parts or paint.
Do not overfill automatic trans-mission fluid, or the transmission
could be damaged.
Do not drive with the air cleaner fil-ter removed, or excessive enginewear could result. Also backfiringcould cause a fire in the engine
compartment.
Be careful not to scratch the glasssurface with the wiper frame.
When closing the engine hood,
check to see that you have not for-
gotten any tools, rags, etc.
NOTICE

152Here is a list of parts and tools you will
need on performing do-it-yourself main-
tenance. Remember all Toyota parts are
designed in metric sizes, so your tools
must be metric. Checking the engine oil level Parts (if level is low):
Engine oil API SH, Energy-Conserv-
ing IIº multigrade or ILSAC multigrade
having viscosity proper for your cli-mate
Tools: Rag or paper towel
Funnel (only for adding oil)
Checking the engine coolant level Parts (if level is low): Ethylene-glycol antifreeze
Demineralized or distilled water
Tools: Funnel (only for adding coolant)
Checking brake fluid Parts (if level is low): SAE J1703 or FMVSS No. 116 DOT 3 brake fluid
Tools: Rag or paper towel
Funnel (only for adding fluid) Checking power steering fluid Parts (if level is low):
Automatic transmission fluid DEXRON )
-II or -III
Tools: Rag or paper towel
Funnel (only for adding fluid)
Checking battery condition Non-maintenance batteriesÐ
Tools: Warm water
Baking soda
Grease
Conventional wrench (for terminal clamp bolts)
Maintenance type batteriesÐ Parts (if level is low): Distilled water
Tools: Warm water
Baking soda
Grease
Conventional wrench (for terminal clamp bolts)
Coin (for vent plugs)
Funnel (only for adding distilled water) Checking and replacing fuses Parts (if replacement is necessary):
Fuse with same amperage rating as original
Adding washer fluid Parts: Water
Washer fluid containing antifreeze (for winter use)
Tools: Funnel
Replacing light bulbs Parts: Bulb with same number and wattage rating as original (See charts in Re-
placing light bulbsº in Chapter 7-3.)
Tools: Screwdriver
Parts and tools

Part 7Checking the engine oil level
153
DO-IT-YOURSELF MAINTENANCEÐ
Chapter 7-2 Engine and Chassis
Checking the engine oil level
Checking the engine coolant level
Checking brake fluid
Checking power steering fluid
Checking tire pressure
Checking and replacing tires
Rotating tires
Installing snow tires and chains
Replacing wheels
Aluminum wheel precautions
With the engine at operating tempera- ture and turned off, check the oil level
on the dipstick.
1. To get a true reading, the vehicle
should be on a
level spot. After turning off
the engine, wait a few minutes for the oil
to drain back into the bottom of the en-gine.
2. Pull out the dipstick, and wipe it clean with a rag.
3. Reinsert the dipstick 'push it in as far
as it will go, or the reading will not be cor- rect.
4. Pull the dipstick out and look at the oil level on the end. If the oil level is below or only slightly
above the low level, add engine oil of
the same type as already in the engine. Remove the oil filler cap and add engine
oil in small quantities at a time, checking the dipstick.
The approximate quantity of oil needed to fill between the low level and the full level
on the dipstick is indicated below for refer- ence.
When the level reaches within the correct range, install the filler cap hand-tight.
Oil quantity, L (qt., Imp. qt.): 1.5 (1.6, 1.3)

Avoid overfilling, or the enginecould be damaged.
Check the oil level on the dipstick
once again after adding the oil.
NOTICE

154ENGINE OIL SELECTION 2JZ-GE engineÐUse API SH, Energy-
Conserving IIº multigrade engine oil or
IL SAC multigrade engine oil.
SAE 5W-30 is the best choice for your
vehicle, for good fuel economy, and
good starting in cold weather.
If you use SAE 10W-30 engine oil in
extremely low temperatures, the en-
gine may become difficult to start, so
SAE 5W-30 engine oil is recom-mended.
2JZ-GTE
engineÐUse API SH, Energy-
Conserving IIº multigrade engine oil or
IL SAC multigrade engine oil.If you use SAE 10W-30 engine oil in
extremely low temperatures, the en-
gine may become difficult to start, so
SAE 5W-30 engine oil is recom-mended.
Oil identification marks
Either or both API registered marks are
added to some oil containers to help
you select the oil you should use.
The API Service Symbol is located any-
where on the outside of the container. The top portion of the label shows the oil
quality by API (American Petroleum Insti-
tute) designations such as SH. The center
portion of the label shows the SAE viscos-
ity grade such as SAE 5W-30. Energy-
Conserving IIº shown in the lower portion,
indicates that the oil has fuel-saving capa-
bilities. Oils marked Energy-Conserving
IIº will have higher fuel-saving capabilities than oil marked Energy-Conservingº.

155
The ILSAC (International Lubricant Stan-
dardization and Approval Committee) Certification Mark is displayed on the front
of the container. 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.
To prevent burning yourself, do not remove the radiator cap when the
engine is hot.
CAUTION! Coolant type selection
Your coolant must contain ethylene-gly-
col antifreeze. In addition to preventingfreezing 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 provideprotection to about -35 C (-31 F).
Do not use alcohol type antifreeze
or plain water alone.
NOTICE
Checking the engine coolant level

156
2JZGE engineTo 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.
If the level is low, add SAE J1703 or
FMVSS No. 116 DOT 3 brake fluid to the
brake reservoir. Remove and replace the reservoir cover
by hand. Fill the brake fluid to the dotted
line. This brings the fluid to the correct lev-
el when you put the cover back on. Use only newly opened brake fluid. Once
opened, brake fluid absorbs moisture
from the air, and excess moisture can cause a dangerous loss of braking.
CAUTION
Take care when filling the reservoir
because brake fluid can harm your
eyes and damage painted surfaces.
If fluid gets in your eyes, flush your
eyes with clean water.!
NOTICE
If you spill the fluid, be sure to wash it off with water to prevent it from
damaging the parts or paint.
Checking brake fluid

157
Check the fluid level on the dipstick. If
necessary, add automatic transmis-
sion fluid DEXRON)
-II or -III.
If the vehicle has been driven around 80
km/h (50 mph) for 20 minutes (a little more
in frigid temperatures), the fluid is hot(60 C ' 80 C or 140 F ' 175 F). You
may also check the level when the fluid is
cold (about room temperature, 10 C '
30 C or 50 F ' 85 F) if the engine has
not been run for about five hours.
a. Clean all dirt from outside of the reser- voir tank.
b. Remove the filler cap by turning it
counterclockwise and wipe the dipstick clean. c. Reinstall the filler cap.
d. Remove the filler cap again and look at the fluid level. If the fluid is cold, the level
should be in
the COLDº range on the dip-
stick. Similarity, if it is hot, the fluid level
should be in the ``HOTº range. If the level
is at the low side of either range, add auto-
matic transmission fluid DEXRON )
-II or
-III to bring the level within the range.
e. After replacing the filler cap, visually check the steering box case, vane pump
and hose connections for leaks ordamage.
CAUTION
The reservoir tank may be hot so be
careful not to burn yourself.!
Avoid overfilling, or the power steering could be damaged.
NOTICE
Keep your tire pressures at the proper level.
The recommended cold tire pressures, tire sizes and the vehicle capacity weightare also given in Part 8. They are also on the tire pressure label as shown.
You should check the tire pressures every
two weeks, or at least once a month. And
don't forget the spare!
Incorrect tire pressure can reduce tire
life and make your vehicle less safe to drive.
Checking power steering fluid
Checking tire pressure

158Low tire pressure results in excessive
wear, poor handling, reduced fuel econo-
my, and the possibility of blowouts fromoverheated tires. Also, low tire pressure
can cause poor sealing of the tire bead. If
the tire pressure is excessively low, there
is the possibility of wheel deformation and/or tire separation.
High tire pressure produces a harsh ride,
handling problems, excessive wear at the center of the tire tread, and a greater
pos-
sibility of tire damage from road hazards.
If a tire frequently needs refilling, have it
checked by your Toyota dealer.
The following instructions for check-
ing tire pressure should be observed: The pressure should be checked
only when the tires are cold. If your
vehicle has been parked for at least 3 hours and has not been driven for mo-
re than 1.5 km or 1 mile since, you willget an accurate cold tire pressure reading.
Always use a tire pressure gauge.
The appearance of a tire can be mis-
leading. Besides, tire pressures that
are even just a few pounds off can de-
grade handling and ride.
Take special care when adding air
to the compact spare tire. The small-
er tire size can gain pressure very
quickly. Add compressed air in small
quantities and check the pressure
often until it reaches the specifiedpressure.
Do not bleed or reduce tire pres-sure after driving. It is normal for the
tire pressure to be higher after driving.
Never exceed the vehicle capacityweight. The passenger and luggage
weight should be located so that the
vehicle is balanced.
Be sure to reinstall the tire inflation
valve caps. Without the valve caps,
dirt or moisture could get into the valve
core and cause air leakage. If the capshave been lost, have new ones put onas soon as possible.
CHECKING YOUR TIRES Check the tire tread for the tread wear
indicators. If the indicators show, re-
place the tires.
The tires on your Toyota have built-in tread wear indicators to help you know
when the tires need replacement. When
the tread depth wears to 1.6 mm (0.06 in.)
or less, the indicators will appear. If you
can see the indicators in two or more adja-
cent grooves, the tire should be replaced.
The lower the tread, the higher the risk of skidding.
Checking and replacing tires