2003 HONDA ACCORD COUPE engine

Your car has several identif ying
numbers located in various places.
The Vehicle Identif ication Number
(VIN) is the 17-digit number your
Honda dealer uses to register your
car f or warranty purposes. It is also
necessary f or licensing and insuring
your car. The easiest place to find
the VIN is on a plate fastened to the
top of the dashboard. You can see it
by looking through the windshield
on the driver’s side. It is also on the
Certification label attached to the
driver’s doorjamb, and is stamped on
the engine compartment bulkhead.
The VIN is also provided in bar code
on the Certification label.
Identif ication Numbers
T echnical Inf ormation394
VEHICLE IDENTIFICATION NUMBERCERTIFICATION LABEL

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.
Identif ication Numbers
T echnical Inf ormation395
AUTOMATIC/MANUAL TRANSMISSION NUMBERENGINE NUMBER
6-cylinder Models MANUAL
TRANSMISSION
NUMBERENGINE NUMBER
4-cylinder Models
AUTOMATIC TRANSMISSION NUMBER

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T echnical Inf ormation
Specif ications (4-cylinder Models)
396
Dimensions
Weights
Air Conditioning Capacities
187.6 in (4,766 mm)
71.3 in (1,810 mm)
55.7 in (1,415 mm)
105.1 in (2,670 mm)
61.1 in (1,553 mm)
61.2 in (1,554 mm)
1.88 US gal (7.1
)
1.90 US gal (7.2)
1.37 US gal (5.2
)
1.40 US gal (5.3)
5.6 US qt (5.3
)
HFC-134a (R-134a)
17.6 19.4 oz (500 550 g) 4.4 US qt (4.2
)
4.2 US qt (4.0
)
ND-OIL8 2.0 US qt (1.9
)
2.2 US qt (2.1)
3.0 US qt (2.8)
6.9 US qt (6.5)
2.6 US qt (2.5
)
Including the coolant in the reserve tank and that remaining in the
engine.
Reserve tank capacity:
0.16 US gal (0.6
)
Excluding the oil remaining in the engine. 4.8 US qt (4.5
)
Length
Width
Height
Wheelbase
Track
Gross vehicle weight rating
Refrigerant type
Charge quantity
Lubricant type
See the certification label attached
to the driver’s doorjamb. Fuel tank
Engine
coolant
Engine oil
Manual trans-
mission fluid
Automatic
transmission
fluid
Windshield
washer
reservoir17.09 US gal (64.7
)
Front
Rear Approx.
1:
2: Change
Manual
Automatic
Total Manual
Automatic
Change Including
filter
Without
filter
Total
Change
Total
Change
Total
U.S. Cars
Canada Cars1
2

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T echnical Inf ormation
Specif ications ( 4-cylinder Models)
397
Battery
Fuses Lights Engine
Alignment
Tires
12 V
12 V
24/2.2 CP
12 V
12 V
60 W (HB3)
51 W (HB4)
12 V
12 V
12 V
12 V
12 V
12 V 12 V
12 V
12 V 21 W
21/5 W
18 W
3CP
8W
21 W
5W
2CP
1.1 W
8W
Capacity 12 V
12 V 38 AH/5 HR
47 AH/20 HR
Interior
Under-hood Headlights
Front turn signal/parking/side
marker lights
Rear turn signal lights
Back-up lights
License plate lights
Ceiling light
High-mount brake light
Trunk light
Door courtesy lights
Vanity mirror lights
Spotlights
See page390or the fuse label
attached to the inside of the fuse
box lid.
See page 389or the fuse box
cover. Water cooled 4-stroke i-VTEC
4-cylinder gasoline engine
Type
BorexStroke
Displacement
Compression ratio
Spark plugs 3.43 x 3.90 in (87.0 x 99.0 mm)
144 cu-in (2,354 cm
)
9.7 : 1
See spark plug maintenance sec-
tion page 320 .
Toe-in
Camber
Caster 0.00 in (0.0 mm)
0.08 in (2.0 mm)
0°1°
3°15’
Size
Pressure P205/65R15 92H
P205/60R16 91V
T135/90D15 100M
30 psi (210 kPa , 2.1 kgf/cm
)
32 psi (220 kPa , 2.2 kgf/cm)
29 psi (200 kPa , 2.0 kgf/cm)
30 psi (210 kPa , 2.1 kgf/cm)
60 psi (420 kPa , 4.2 kgf/cm)
Front
Rear
Front
Rear
Front
High
Low
1: LX
2: EXFront/Rear
Spare
Front
Rear
Spare
Stop/taillight/side marker lights
1
2
1
2
1
2

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T echnical Inf ormation
Specif ications (6-cylinder Models)
398
Dimensions
Weights
Air Conditioning Capacities
Length
Width
Height
Wheelbase
Track
Gross vehicle weight rating
Refrigerant type
Charge quantity
Lubricant type See the certification label attached
to the driver’s doorjamb. Fuel tank
Engine
coolant
Engine oil
Manual
transmission
fluid
Automatic
transmission
fluid
Windshield
washer
reservoir
Including the coolant in the reserve tank and that remaining in the
engine.
Reserve tank capacity:
Excluding the oil remaining in the engine.
61.1 in (1,553 mm)
61.2 in (1,554 mm)
17.6 19.4 oz (500 550 g) HFC-134a (R-134a)
ND-OIL8
2.6 US qt (2.5
)
4.8 US qt (4.5)
7.6 US qt (7.2
)
3.1 US qt (2.9)
5.3 US qt (5.0
)
4.2 US qt (4.0
)
4.5 US qt (4.3
)
0.16 US gal (0.6
) 1.77 US gal (6.7
)
2.22 US gal (8.4
)
105.1 in (2,670 mm)
1.74 US gal (6.6
)
187.6 in (4,766 mm)
71.3 in (1,810 mm)
55.7 in (1,415 mm)
2.17 US gal (8.2
)
2.3 US qt (2.2
)
2.6 US qt (2.5)
17.09 US gal (64.7
)
Front
Rear Approx.
1:
2: Change
Manual
Automatic
Total Manual
Automatic
Change Including
filter
Without
filter
Total
Change
Total
Change
Total
U.S. Cars
Canada Cars1
2

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T echnical Inf ormation
Specif ications ( 6-cylinder Models)
399
Engine
Alignment
Lights
Battery
Fuses
Tires Type
BorexStroke
Displacement
Compression ratio
Spark plugs
Toe-in
Camber
CasterWater cooled 4-stroke
SOHC VTEC
6-cylinder gasoline engine
Headlights
Front turn signal/parking/side
marker lights
Rear turn signal lights
Back-up lights
License plate lights
Ceiling light
High-mount brake light
Trunk light
Door courtesy lights
Vanity mirror lights
Spotlights
Capacity
Interior
Under-hood Size
Pressure
12 V
12 V
12 V
12 V
12 V
12 V
12 V
12 V
12 V
12 V
12 V
12 V
12 V
12 V
12 V
63 W (HB3)
51 W (HB4)
24/2.2 CP
21 W
21/5 W
18 W
3CP
8W
21 W
5W
2CP
1.1 W
8W
52 AH/5 HR
65 AH/20 HR
3.39 x 3.39 in (86.0 x 86.0 mm)
183 cu-in (2,997 cm
)
10.0 : 1
0.00 in (0.0 mm)
0.08 in (2.0 mm) 0°1°
3°15’
P215/50R17 93V P205/60R16 91V
T135/90D15 100M
32 psi (220 kPa , 2.2 kgf/cm
)
T135/80R16 101M
See page 390or the fuse label
attached to the inside of the fuse
box lid.
See page 389or the fuse box
cover. 60 psi (420 kPa , 4.2 kgf/cm
)
29 psi (200 kPa , 2.0 kgf/cm)
30 psi (210 kPa , 2.1 kgf/cm)
See spark plug maintenance sec-
tion page 323 .
Front
Rear
Front
Rear
Front
High
Low
1:
2:LX-V6, EX-V6 with automatic transmission
EX-V6 with manual transmission Front/Rear
Spare
Front
Rear
Spare
Stop/taillight/side marker lights
1
2
1
2
1
2

Î
ÎThe 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 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, Honda vehicles comply
with the Canadian emission
requirements, as specif ied in an
agreement with Environment
Canada, at the time they are
manuf actured.
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.
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.
274
The Clean Air Act
Crankcase Emissions Control
System
Onboard Ref ueling Vapor
Recovery Evaporative Emissions Control
System
Emissions Cont rols
T echnical Inf ormation405

The emissions control systems are
covered by warranties separate from
the rest of your car. Read your
warranty manual f or more informa-
tion. 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 Honda replacement parts or
their equivalent f or repairs. Using
lowerqualitypartsmayincreasethe
emissions f rom your car.
The PGM-FI System uses sequential
multiport f uel injection.
It has three subsystems: Air Intake,
Engine Control, and Fuel Control.
The Engine Control Module (ECM)
or 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 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 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.
2
2
Replacement Parts
Exhaust Emissions Controls
PGM-FI Syst em Ignit ion T iming Cont rol Syst em
Exhaust Gas Recirculat ion (EGR)Syst em
Three Way Catalytic Converter
Emissions Cont rols
T echnical Inf ormation406