2003 Acura CL engine

The Transmission Number is on a
label on top of the transmission. The Engine Number is stamped into
the engine block. It is on the f ront
lef t.
Identif ication Numbers
T echnical Inf ormation325
E EN
NG GIINNE E N
NUUMM B
BEER
R
T
T R
RA A N
NS SMM I
ISSS SIIOON N N
NUUMM B
BEER
R

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T echnical Inf ormation
Specif ications
326
Dimensions
Weights
Air Conditioning Capacities
4.2 US qt (4.0
, 3.5 Imp qt)
192.0 in (4,877 mm)
70.6 in (1,793 mm)
53.3 in (1,354 mm)
106.9 in (2,715 mm)
61.1 in (1,553 mm)
61.0 in (1,549 mm)
HFC-134a (R-134a)
21.2 22.9 oz (600 650 g) ND-OIL8 1.48 US gal (5.6
, 1.23 Imp gal)
1.98 US gal (7.5, 1.65 Imp gal)
4.6 US qt (4.4
, 3.9 Imp qt)
5.3 US qt (5.0
, 4.4 Imp qt)
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 3.1 US qt (2.9, 2.6 Imp qt)
7.6 US qt (7.2, 6.3 Imp qt)
Excluding the oil remaining in the engine. 0.16 US gal (0.6
, 0.13 Imp gal)
Including the coolant in the reserve tank and that remaining in the
engine.
Reserve tank capacity: 4.8 US qt (4.5
, 4.0 Imp qt)
2.6 US qt (2.5, 2.2 Imp qt)
Fuel tank
Engine
coolant
Engine oil
Automatic
transmission
fluid
Manual
transmission
fluid
Windshield
washer
reservoir
2.3 US qt (2.2
, 1.9 Imp qt)
2.6 US qt (2.5, 2.2 Imp qt)
1:
2: Approx.
Front
Rear Change
Total
Change
Including filter
Without filter
Total
Change
Total
Change
Total
U.S. Cars
Canada Cars
17.17 US gal (65.0, 14.30 Imp gal)1
2

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T echnical Inf ormation
Specif ications
327
Engine
Tires Alignment
Lights
Battery
Fuses 12 V
12 V
60 W (HB3)
24/2.2 CP
12 V
12 V 27/8 W
21/5 W
12 V 21/5 W Water cooled 4-stroke
SOHC VTEC 6-cylinder (V6) gasoline engine
Type
BorexStroke
Displacement
Compression ratio
Spark plugs 196 cu-in (3,210 cm
)
3.50 x 3.39 in (89.0 x 86.0 mm)
9.8 : 1
10.5 : 1
60 psi (420 kPa , 4.2 kgf/cm
)
Size
Pressure Toe
Camber
Caster
32 psi (220 kPa , 2.2 kgf/cm)
T135/80R16 101M P215/50R17 93V P205/60R16 91V 2°50’
0°30’0°
0.08 in (2.0 mm)
0.00 in (0.0 mm)
Headlights (High beam)
Front turn signal/parking lights
Rear turn signal lights
Stop/Taillights
Stop/tail/side marker lights
High-mount brake light
Front side marker lights
Back-up lights
License plate light
Ceiling light
Spotlights
Trunk light
Door courtesy lights
Vanity mirror light
Glove box light
12 V
12 V
12 V
12 V
12 V
12 V
12 V
12 V
12 V
12 V21 W
5W
21 W
3CP
7W
5W
5W
2CP
1.1 W
2CP
Capacity 12 V 65 AH/20 HR
Interior
Under-hood See pages
318and 319or the fuse
label attached to the inside of the
fuse box door on each side of the
dashboard.
See page 317or the fuse box
cover. See spark plug maintenance
section page
258.
Front
Rear
Front
Rear
Front in
Low beam headlight bulbs are a type of high voltage discharge tube
(D2R).
Front/Rear
Spare
Front/Rear
Spare
1:
2:
1:
2: Premium model
Type-S
Premium model
Type-S
1
1 1
2
1
2

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.
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 CrankcaseVentilation valve routes them from
the crankcase back to the intake
manif old. They are then drawn into
the engine and burned.
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.
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 .
230
The Clean Air Act
Crankcase Emissions Control
System Evaporative Emissions Control
System
Onboard Ref ueling Vapor
Recovery
Emissions Cont rols
T echnical Inf ormation332

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
Genuine Acura replacement parts or
their equivalent f or repairs. Using
lowerqualitypartsmayincreasethe
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 ormation333

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.
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.
Keep the engine tuned-up.
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. 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.
Three Way Catalytic Converter
T echnical Inf ormation334
T T
H
H R
REEE
E W
WA AY
Y C
CAA T
TA
A L
LYYT TI
ICC C
COON NVVE
ER
RT TE
ER
R

CONT INUED
If you take your vehicle f or a state
emissions test shortly af ter the
battery has been disconnected or
gone dead, it may not pass the test.
This is because of certain ‘‘readiness
codes’’ that must be set in the on-
board diagnostics f or the emissions
systems. These codes are erased
when the battery is disconnected,
and set again only after several days
of driving under a variety of
conditions.If the testing f acility determines that
the readiness codes are not set, you
will be requested to return at a later
date to complete the test. If you must
get the vehicle re-tested within the
next two or three days, you can
condition the vehicle for re-testing
by doing the f ollowing.
Make sure the gas tank is nearly,
but not completely, f ull (around
3/4).
Make sure the vehicle has been
parked with the engine of f f or 8
hours or more.
Make sure the ambient
temperature is between 20° and
95°F. Without touching the accelerator
pedal, start the engine and let it
idle f or 20 seconds.
Keep the vehicle in Park
(automatic transmission) or
Neutral (manual transmission).
Increase the engine speed to 2,000
rpm and hold it there until the
temperature gauge rises to at least
1/4of thescale(approximately3
minutes).
T echnical Inf ormation
St at e Emissions T est ing
T esting of Readiness Codes
335

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#
) This manual complements the Service Manual by
providing in-depth troubleshooting inf ormation f or each
electrical circuit in your vehicle.
This manual describes the procedures involved in the
replacement of damaged body parts. This manual covers maintenance and recommended
procedures f or repair to engine and chassis components.
It is written f or the Journeyman mechanic, but is simple
enough f or most mechanically-inclined owners to under-
stand.
Authorized Manuals
Service Manual:
Electrical T roubleshooting Manual:
Body Repair Manual:
342
NOTE: Dealers and Companies please provide dealer or company name,
and also the name of the person to whose attention the shipment should
be sent. For purchases outside U.S.A. please write to the address shown
below for a quotation.
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