Lexus 2VZ - FE Manual

SECTION 6– 2
161
SERVICE PROCEDURES AND
SPECIFICATIONS
Engine
Specifications 162. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fuel 165. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Facts about engine oil consumption 166. . . . . . . . . . . . . . . . . . . . . . . .
Used engine oil 167. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Checking the engine oil level 167. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Checking the engine coolant level 168. . . . . . . . . . . . . . . . . . . . . . . . . .
Checking and replacing the air cleaner element 169. . . . . . . . . . . . . .
Checking the engine system 170. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ENGINE
162
SPECIFICATIONS
−GENERAL
Model
Type
Bore and stroke
Displacement
Valve clearance (engine cold)
Intake
Exhaust
Drive belt tension (with Borroughs drive belt tension gauge
No. BT-33-73F)
Alternator belt
Power steering pump belt
2VZ −FE
6cylinder V type, 4cycle, gasoline
3.44 in. x 2.74 in. (87.5 mm x 69.5 mm)
153.0 cu.in. (2508 cc)
0.005 −0.009 in. (0.13 −0.23 mm)
0.011 −0.015 in. (0.27 −0.37 mm)
115 ±20 lb
80 ±20 lb
−LUBRICATION SYSTEM
Oil capacity
Dry fill
Drain and refill
with filter
without filter
Oil grade (API):
4.9 qts. (4.0 Imp.qts., 4.6 liters)
4.1 qts. (3.4 Imp.qts., 3.9 liters)
3.9 qts. (3.3 Imp.qts., 3.7 liters)
SG (Multigrade and fuel-efficient oil is recommended)

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163
−LUBRICATION SYSTEM
Recommended oil viscosity (SAE):
−COOLING SYSTEM
Capacity
Coolant type
10.0 qts. (8.4 Imp.qts., 9.5 liters)
Ethylene-glycol coolant (Do not use alcohol type.)
−FUEL
Research octane number 91 (Octane Rating 87) or higher (Only UNLEADED)
−IGNITION SYSTEM
Spark plug −Make Nippondenso
NGK
−Gap
PQ20R
BCPR6EP11
0.043 in. (1.1 mm)
−ELECTRICAL SYSTEM
Battery −Specific gravity reading at 68_F (20_C): 1.260 Fully charged
1.160 Half charged
1.060 Discharged

ENGINE
164
−ELECTRICAL SYSTEM
−Charging rates Quick charge 15 A max.
Slow charge 5 A max.

ENGINE
165
FUEL
Fuel type
Your vehicle must use only unleaded gasoline.
To help prevent gas station mixups, your Lexus has a smaller
fuel tank opening. The special nozzle on pumps with unleaded
fuel will fit it, but the larger nozzle on pumps with leaded gas
will not.
NOTICE:
Do not use leaded gasoline. Use of leaded gasoline will
cause the catalytic converter to lose its effectiveness
and the emission control system to function improperly.
Also, this can increase maintenance costs.
Octane rating
Select Research Octane No. 91 (Octane Rating 87) or
higher. For improved vehicle performance, the use of
premium unleaded gasoline with a Research Octane No.
of 96 (Octane Rating 91) or higher is recommended.
Use of unleaded fuel with an octane number or rating lower
than stated above will cause persistent heavy knocking. If
severe, this will lead to engine damage.
If your engine knocks ...
If you detect heavy knocking even when using the
recommended fuel, or if you hear steady knocking while
holding a steady speed on level roads, consult your Lexus
dealer.
However, now and then, you may notice light knocking for a
short time while accelerating or driving up hills. This is no
cause for concern.
Gasolines containing alcohol
Gasohol is a mixture of gasoline and ethanol. If you use
gasohol in your Lexus, be sure that it is unleaded, has an
octane rating no lower than 87 and does not contain more
than 10% ethanol. Lexus does not recommend the use of
gasolines containing methanol.
If you use gasoline containing methanol, use only gasoline
meeting the requirements above and also containing less than
5% methanol with cosolvents and corrosion inhibitors for
methanol.
NOTICE:
DDo not use gasohol other than stated above. It will
cause fuel system damage or vehicle performance
problems.
DIf driveability problems are encountered (poor hot
starting, vaporizing, engine knock, etc.), discontinue
its use.

ENGINE
166
DTake care not to spill gasohol during refueling.
Gasohol may cause paint damage.
Fuel tank capacity
15.9 gal (13.2 Imp. gal., 60 liters)
FACTS ABOUT ENGINE OIL
CONSUMPTION
Functions of engine oil
Engine oil has the primary function of lubricating and cooling
the inside of the engine, and plays a major role in maintaining
the engine in proper working order.
Engine oil consumption
It is normal that an engine should consume some engine
oil during normal engine operation. The causes of oil
consumption in a normal engine are as follows.
DOil 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 combustion gases during the
combustion process.
DOil 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 temperature exhaust gases also burn the oil used to
lubricate the exhaust valve stems.
The amount of engine oil consumed depends on the
viscosity of the oil, on the quality of the oil and on the way
the vehicle is driven.
More oil is consumed under driving conditions such as high
speeds and frequent acceleration and deceleration.
A new engine consumes more oil, since its pistons, piston rings
and cylinder walls have not become conditioned.
When judging the amount of oil consumption, note that
the oil may become diluted, making it difficult to judge the
true level accurately.
For example, if a vehicle is used for repeated short trips and
consumes a normal amount of oil, the dipstick may not show
any drop in the oil level at all, even after 600 miles (1000 km)
or more. This is because the oil is gradually becoming diluted
with fuel or moisture, making it appear that the oil level has not
changed.
The diluting ingredients evaporate out when the vehicle is then
driven at high speeds, as on an expressway, making it appear
that oil is excessively consumed after driving at high speeds.

ENGINE
167
Importance of engine oil level check
One of the most important points in proper vehicle
maintenance is to keep the engine oil at the optimum level so
that oil function will not be impaired. Therefore, it is essential
that the oil level be checked regularly. Lexus recommends that
the oil level be checked every time you refuel the vehicle.
NOTICE:
Failure to check the oil level regularly could lead to
serious engine troubles due to insufficient oil.
For detailed information on oil level check, see “Checking the
engine oil level” on this page.
USED ENGINE OIL
CAUTION:
DUsed engine oil contains potentially 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.
DDo not leave used oil within the reach of children.
DDispose of used oil only in a safe and acceptable
manner. Do not dispose of used oil in household trash,
in sewers or onto the ground. Call your Lexus dealer or
a service station for information concerning recycling
or disposal.
CHECKING THE ENGINE OIL
LEVEL
Add oil
O.K.
Too full
With the engine at operating temperature 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 engine.
2. Pull out the dipstick, and wipe it clean with a rag.
3. Reinsert the dipstick and push it in as far as it will go, or the
reading will not be correct.
4. Pull the dipstick out and look at the oil level on the end. If it
is between the “F” and “L” marks, it is O.K.

ENGINE
168
If the oil level is below the “L” mark, add engine oil.
Remove the oil filler cap and add engine oil in small quantities
at a time, checking the dipstick. When the level reaches within
the correct range, install the filler cap hand-tight.
NOTICE:
Avoid overfilling, or the engine could be damaged.
Engine oil selection
Use engine oil of API grade SG. Using multigrade and
fuel-efficient engine oil is recommended. Recommended
viscosity is as follows.
Recommended viscosity (SAE):
TEMPERATURE RANGE ANTICIPATED BEFORE NEXT OIL CHANGE
CHECKING THE ENGINE
COOLANT LEVEL
Look at the see-through coolant reservoir tank. The
coolant level is satisfactory if it is between the “FULL” and
“LOW” lines on the tank. If the level is low, add
ethylene-glycol type coolant.

ENGINE
169
The coolant level in the reservoir tank will vary with engine
temperature. However, if the level is on or below the “LOW”
line, add coolant to bring the level up to the “FULL” line.
Use only ethylene-glycol type coolant. It will prevent freezing
and corrosion. Supplemental inhibitors or additives are neither
needed nor recommended. (For information on
ethylene-glycol coolant, see also “Winter driving tips” on page
115.)
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, drain cocks, and water pump.
If no leak can be found, have the cap pressure tested at your
Lexus dealer.
CAUTION:
To prevent burning yourself, do not remove the radiator
cap when the engine is hot.
CHECKING AND REPLACING
THE AIR CLEANER ELEMENT
Cover
Element
To inspect the element, release the clips, remove the
cover and take out the element.
Pull the wire tab to release each clip.
Inspect the lower surface of the element. If it is dirty, it should
be replaced. If it is just moderately dusty, it may be cleaned by
blowing compressed air from the upper surface. Do not wash
or oil the element.
When installing an element, be sure to remove any dust from
where the element seats and put the element properly in place.
NOTICE:
Do not drive with the air cleaner removed, or excessive
engine wear could result. Also backfiring could cause a
fire in the engine compartment.

ENGINE
170
CHECKING THE ENGINE SYSTEM
(CALIFORNIA ONLY)
Suitable jumper wire
Connector
”E1” terminal ”TE1” terminal
Engine system warning light
Off On
Off
On
Blinking pattern of normal function
0.25
0.25
(seconds)
You can check your engine system by operating the
engine system warning light as follows.
1. Turn the ignition off and open the engine hood.
2. Open the connector box cover and connect the terminals
“E1” and “TE1” with a suitable jumper wire.
3. Turn the ignition key to the “ON” position, but do not start the
engine or press the accelerator pedal. The warning light will
blink.
When the engine system is normal, the light blinks in quick
succession as shown.

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Blinking pattern of malfunction
Diagnostic
code 12
1 blink
On
Off
(seconds)
Diagnostic
code 21
2 blinks 1 blink2 blinks
4. If the blinking has a short pause, there is a problem
somewhere in the engine system.
Read out the diagnostic code by the blinking pattern. The
numbers of blinks before and after a short pause indicate the
first and second digits of the diagnostic code respectively. As
an example, a diagnostic code and the corresponding blinking
pattern are shown in the illustration. Using the following table,
you can determine the faulty portion.
NOTICE:
DDo not connect terminals other than those stated as
serious damage may occur.
DHave the faulty portion repaired by your Lexus dealer
as soon as possible.
Diagnostic code Faulty portion
12 R.P.M. signal
13 R.P.M. signal
14 Ignition signal
21 Oxygen sensor signal
22 Coolant temperature sensor signal
24 Intake air temperature sensor signal
25 Fuel metering device (lean)
26 Fuel metering device (rich)
27 Oxygen sensor signal
31 Air flow meter signal
32 Air flow meter signal
41 Throttle position sensor signal
42 Vehicle speed sensor signal
43 Starter signal
51 Switch signal
52 Knock sensor signal
53 Knock control signal
71 Exhaust gas recirculation sensor signal