Acura RL 2004 3.5 Owner's Manual

µµÎ
Î
Î
Î
T echnical Inf ormation
Specif ications
338
Dimensions
Weights
Air Conditioning Capacities
Excluding the oil remaining in the engine. Including the coolant in the reserve tank and that remaining in the
engine.
Reserve tank capacity: 4.5 US qt (4.3
)
196.7 in (4,995 mm)
71.7 in (1,820 mm)
54.5 in (1,385 mm)
114.6 in (2,910 mm)
61.0 in (1,550 mm)
60.6 in (1,540 mm)
HFC-134a (R-134a)
24.7 26.5 oz (700 750 g) ND-OIL8 18.0 US gal (68
)
1.61 US gal (6.1)
2.27 US gal (8.6)
4.9 US qt (4.6
)
5.6 US qt (5.3
)
3.2 US qt (3.0)
9.1 US qt (8.6)
1.11 US qt (1.05
)
1.16 US qt (1.10)
2.6 US qt (2.5)
6.9 US qt (6.5)
0.172 US gal (0.65
)
Length
Width
Height
Wheelbase
Track
Gross vehicle weight rating See the certification label attached
to the driver’s doorjamb.
Refrigerant type
Charge quantity
Lubricant type Fuel tank
Engine
coolant
Engine oil
Automatic
transmission
fluid
Differential
oil
Windshield
washer
reservoir
1:
2: Approx.
Front
Rear Change
Total
Change
Including filter
Without filter
Total
Change
Total
Change
Total
U.S. Cars
Canada Cars
1
2

µ
Î µ
µ
µ
µ
µ
µ
µ
µ
µ
µ
µ
µ
µ
µ
µ
µ
Î
T echnical Inf ormation
Specif ications
339
Engine
Alignment
Tires
Battery
Fuses Lights 12 V
12 V55 W (H1) (High beam)
27/8 W
3.54x3.58in(90x91mm)212 cu-in (3,474 cm
)
9.6 : 1
0.00 in (0.0 mm)
0.08 in (2.0 mm) 0°
0°30’
2°50’
P225/55R16 94V
T135/80D16 101M
30 psi (210 kPa , 2.1 kgf/cm
)
60 psi (420 kPa , 4.2 kgf/cm)
12 V
12 V
12 V
12 V
12 V
12 V
12 V
12 V
12 V
12 V
12 V
12 V
21 W
21/5 W
55 W (H1)
21 W
3CP
21 W
3CP
5W
5W
3.4 W
3.4 W
2W Type
BorexStroke
Displacement
Compression ratio
Spark plugs
Water cooled 4-stroke
SOHC V-6 gasoline engine
Toe
Camber
Caster
Size
Pressure
Capacity 12 V 55 AH/5 HR
Interior
Under-hood 65 AH/20 HR
12 V
See page 331or the fuse label
attached to the inside of the fuse
box door under the dashboard.
See page 330or the fuse box
cover. See spark plug maintenance
section page
272.
Headlights
Front turn signal/parking lights
Rear turn signal lights
Brake/Taillights
Front fog lights
High-mount brake light
Front side marker lights
Back-up lights
License plate lights
Ceiling lights
Trunk light
Door courtesy lights
Vanity mirror light
Front
Rear
Front
Rear
Front
Front/Rear
Spare
Front/Rear
Sparein
Front
Rear
Low beam headlight bulbs are a type of high voltage discharge
tube (D2R).
1:
1

µ
The treadwear grade is a compara-
tive rating based on the wear rate of
the tire when tested under controlled
conditions on a specif ied government
test course. For example, a tire
graded 150 would wear one and one-
half (1 1/2) times as well on the
government course as a tire graded
100. The relative perf ormance of
tires depends upon the actual condi-
tions of their use, however, and may
depart signif icantly f rom the norm
due to variations in driving habits,
service practices and dif f erences in
road characteristics and climate.
The tires on your car meet all U.S.
Federal Saf ety Requirements. All
tires are also graded for treadwear,
traction, and temperature perform-
ance according to Department of
Transportation (DOT) standards.
The f ollowing explains these
gradings.
Quality grades can be f ound where
applicable on the tire sidewall
between the tread shoulder and the
maximum section width. For
example:
The traction grades, f rom highest to
lowest, are AA, A, B, and C. Those
grades represent the tire’s ability to
stop on wet pavement as measured
under controlled conditions on
specif ied government test surf aces
of asphalt and concrete. A tire
marked C may have poor traction
perf ormance.
Warning: The traction grade
assignedtothistireisbasedon
straight-ahead braking traction tests,
and does not include acceleration,
cornering, hydroplaning, or peak
traction characteristics.
All passenger vehicle tires must
conf orm to Federal Saf ety
Requirements in addition to these
grades. T readwear
Unif orm T ire Quality Grading T readwear 200
Traction AA
Temperature A Traction AA, A, B, C
DOT T ire Quality Grading (U.S. Cars)
T echnical Inf ormation340

µWarning: The temperature grade f or
this tire is established f or a tire that
is properly inf lated and not over-
loaded. Excessive speed, underinf la-
tion, or excessive loading, either
separately or in combination, can
cause heat buildup and possible tire
f ailure.
The temperature grades are A (the
highest), B, and C, representing the
tire’s resistance to the generation of
heat and its ability to dissipate heat
when tested under controlled
conditions on a specif ied indoor
laboratory test wheel. Sustained high
temperature can cause the material
of the tire to degenerate and reduce
tire life, and excessive temperature
can lead to sudden tire f ailure. The
grade C corresponds to a level of
perf ormance which all passenger
vehicle tires must meet under the
Federal Motor Vehicle Saf ety
Standard No. 109. Grades B and A
represent higher levels of
perf ormance on the laboratory test
wheel than the minimum required by
law.
DOT T ire Quality Grading (U.S. Cars)
T echnical Inf ormation
Temperature A,B,C
341

µ
µ
µ
µµ
µ
µ
µµ
µ µ
The tires that came on your car have
a number of markings. Those you
should be aware of are described
below.
Whenever tires are replaced, they
should be replaced with tires of the
same size. Following is an example
tire size with an explanation of what
each component means.
Vehicletype(Pindicates
passenger vehicle).
Tire width in millimeters.
Aspect ratio (the tire’s section
height as a percentage of its
width).
Tire construction code (R
indicates radial). Load index (a numerical code
associated with the maximum
load the tire can carry). Rim diameter in inches.
Speed symbol (an
alphabetical code indicating
the maximum speed rating).
Tire Identif ication Number (TIN) is
a group of numbers and letters that
look like the f ollowing example TIN.
This indicates that the tire
meets all requirements of
the U.S. Department of
Transportation.Manuf acturer’s
identification mark.
Tire type code. Date of manuf acture.
P
225
55
R 94
V 16
DOT
B97R
FW6X2202
T echnical Inf ormation
Tire Inf ormation
Tire Labeling
Tire Size
T ire Ident if icat ion Number
342
P225/55R16 94VDOT B97R FW6X 2202

Some conventional gasolines are
being blended with alcohol or an
ether compound. These gasolines
are collectively ref erred to as
oxygenated f uels. To meet clean air
standards, some areas of the United
States and Canada use oxygenated
f uels to help reduce emissions.
If you use an oxygenated f uel, be
sure it is unleaded and meets the
minimum octane rating requirement.
Bef ore using an oxygenated f uel, try
to conf irm the f uel’s contents. Some
states/provinces require this
informationtobepostedonthe
pump.(Methyl Tertiary Butyl
Ether)
You may use gasoline containing up
to 15 percent MTBE by volume. (ethyl or grain alcohol)
You may use gasoline containing up
to 10 percent ethanol by volume.
Gasoline containing ethanol may be
marketed under the name ‘‘Gasohol.’’ The f ollowing are the U.S. EPA and
Canadian CGSB approved
percentages of oxygenates: If you notice any undesirable
operating symptoms, try another
service station or switch to another
brand of gasoline.
Fuel system damage or perf ormance
problems resulting f rom the use of
an oxygenated f uel containing more
than the percentages of oxygenates
given above are not covered under
warranty.
(methyl or wood
alcohol)
Your car was not designed to use
fuel that contains methanol.
Methanol can corrode metal parts in
the fuel system, and also damage
plastic and rubber components. This
damage would not be covered by
your warranties. MT BE ET HA NOL
MET HA NOL
Oxygenated Fuels
T echnical Inf ormation343

If you are planning to take your
Acura outside the U.S. or Canada,
contact the tourist bureaus in the
areas you will be traveling in to f ind
out about the availability of unleaded
gasoline with the proper octane
rating.
If unleaded gasoline is not available,
be aware that using leaded gasoline
in your Acura will af f ect perf or-
mance and fuel mileage, and damage
its emissions controls. It will no
longer comply with U.S. and
Canadian emissions regulations, and
will be illegal to operate in North
America. To bring your car back into
compliance will require the replace-
ment of several components, such as
theoxygensensorsandthethree
way catalytic converter. These re-
placements are not covered under
warranty.
Driving in Foreign Countries
T echnical Inf ormation344

Î
ÎThe United States Clean Air Act
sets standards f or automobile
emissions. It also requires that
automobile manufacturers explain to
owners how their emissions controls
workandwhattodotomaintain
them. This section summarizes how
the emissions controls work.
Scheduled maintenance is on page .
In Canada, Acura vehicles comply
with the Canadian emission
requirements, as specif ied in an
agreement with Environment
Canada, at the time they are
manuf actured.
The burning of gasoline in your car’s
engine produces several byproducts.
Some of these are carbon monoxide
(CO), oxides of nitrogen (NOx) and
hydrocarbons (HC). Gasoline
evaporating from the tank also
produces hydrocarbons. Controlling
the production of NOx, CO, and HC
is important to the environment.
Under certain conditions of sunlight
and climate, NOx and HC react to
f orm photochemical ‘‘smog.’’ Carbon
monoxide does not contribute to
smog creation, but it is a poisonous
gas.
The Onboard Ref ueling Vapor
Recovery (ORVR) system captures
the f uel vapors during ref ueling. The
vapors are adsorbed in a canister
f illed with activated carbon. While
driving, the f uel vapors are drawn
into the engine and burned of f . As gasoline evaporates in the f uel
tank, an evaporative emissions
control canister f illed with charcoal
adsorbs the vapor. It is stored in this
canister while the engine is of f . Af ter
the engine is started and warmed up,
the vapor is drawn into the engine
and burned during driving.
Your car has a Positive Crankcase
Ventilation System. This keeps
gasses that build up in the engine’s
crankcase from going into the
atmosphere. The Positive Crankcase Ventilation valve routes them from
the crankcase back to the intake
manif old. They are then drawn into
the engine and burned.
244
The Clean Air Act
Onboard Ref ueling Vapor
Recovery Evaporative Emissions Control
System
Crankcase Emissions Control
System
Emissions Cont rols
T echnical Inf ormation345

The exhaust emissions controls
include f our systems: PGM-FI,
Ignition Timing Control, Exhaust
Gas Recirculation and Three Way
Catalytic Converter. These four
systems work together to control the
engine’s combustion and minimize
the amount of HC, CO, and NOx that
comes out the tailpipe. The exhaust
emissions control systems are
separate f rom the crankcase and
evaporative emissions control
systems.
The PGM-FI System uses sequential
multiport f uel injection.
It has three subsystems: Air Intake,
Engine Control, and Fuel Control.
The Powertrain Control Module
(PCM) uses various sensors to
determine how much air is going
into the engine. It then controls how
much f uel to inject under all operat-
ing conditions.This system constantly adjusts the
ignition timing, reducing the amount
of HC, CO, and NOx produced.
The Exhaust Gas Recirculation
(EGR) system takes some of the
exhaust gas and routes it back into
the intake manif old. Adding exhaust
gas to the air/f uel mixture reduces
the amount of NOx produced when
the f uel is burned.
The three way catalytic converter is
in the exhaust system. Through
chemical reactions, it converts HC,
CO, and NOx in the engine’s exhaust
to carbon dioxide (CO ), dinitrogen
(N ), and water vapor.
The emissions control systems are
designed and certif ied to work to-
gether in reducing emissions to
levels that comply with the Clean Air
Act. To make sure the emissions
remain low, you should use only new
Acura replacement parts or their
equivalent f or repairs. Using lower
qualitypartsmayincreasethe
emissions f rom your car.
The emissions control systems are
covered by warranties separate from
the rest of your car. Read your
warranty manual f or more informa-
tion.
2
2
Exhaust Emissions Controls Replacement Parts
PGM-FI Syst emIgnit ion T iming Cont rol Syst em
Exhaust Gas Recirculat ion (EGR)Syst em
Three Way Catalytic Converter
Emissions Cont rols
T echnical Inf ormation346

Always use unleaded gasoline.
Even a small amount of leaded
gasoline can contaminate the
catalyst metals, making the three
way catalytic converter inef f ective.Keep the engine tuned-up.
A defective three way catalytic
converter contributes to air pollution,
and can impair your engine’s per-
f ormance. Follow these guidelines to
protect your car’s three way catalytic
converter. Have your car diagnosed and
repaired if it is misf iring, back-
f iring, stalling, or otherwise not
running properly.
The three way catalytic converter
contains precious metals that serve
as catalysts, promoting chemical
reactions to convert the exhaust
gasses without af f ecting the metals.
The catalytic converter is ref erred to
as a three-way catalyst, since it acts
on HC, CO, and NOx. A replacement
unit must be an original Acura part
or its equivalent.
The three way catalytic converter
must operate at a high temperature
for the chemical reactions to take
place. It can set on f ire any com-
bustible materials that come near it.
Park your car away f rom high grass,
dry leaves, or other f lammables.
Three Way Catalytic Converter
T echnical Inf ormation347
THREE WAY CATALYTIC CONVERTER