2005 Acura RL engine

Your vehicle has several identif ying
numbers in various places.
The vehicle identif ication number
(VIN) is the 17-digit number your
dealer uses to register your vehicle
f or warranty purposes. It is also
necessary f or licensing and insuring
your vehicle. The easiest place to
find the VIN is on a plate fastened to
the top of the dashboard. You can
seeitbylookingthroughthe
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
certif ication label.
Identif ication Numbers
364
VEHICLE IDENTIFICATION NUMBERCERTIFICATION LABEL
U.S. vehicle is shown.

The engine number is stamped into
the engine block. It is on the f ront
left, below the valve cover.
The transmission number is on a
label on top of the transmission.
Identif ication Numbers
T echnical Inf ormation
365
ENGINE NUMBER
TRANSMISSION NUMBER

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Specif ications
366
Dimensions
Weights
Air Conditioning Capacities
4.2 US qt (4.0
)
193.6 in (4,917 mm)
72.7 in (1,847 mm)
57.1 in (1,451 mm)
110.2 in (2,800 mm)
62.0 in (1,576 mm)
62.4 in (1,585 mm)
HFC-134a (R-134a)
15.8 17.60 oz (450 500 g) ND-OIL8 1.59 US gal (6.0
)
2.27 US gal (8.6)
4.5 US qt (4.3
)
5.3 US qt (5.0
)
2.9 US qt (2.7)
7.9 US qt (7.5)
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.
0.79 US qt (0.75
)
0.77 US qt (0.73)
Excluding the oil remaining in the engine. Including the coolant in the reserve tank and that remaining in the
engine.
Reserve tank capacity: 6.9 US qt (6.5
)
2.6 US qt (2.5)
0.45 US qt (0.43
)
0.48 US qt (0.45)
3.3 US qt (3.1
)
Fuel tank
Engine
coolant
Engine oil
Automatic
transmission
fluid
Rear differential fluid
SH-AWD
differential
case
SH-AWD
clutch case
Transfer
assembly
fluid
Windshield
washer
reservoir
1:
2: Approx.
Front
Rear Change
Total
Change
Including filter
Without filter
Total
Change
Total
Change
Total
Change
Total
Change
Total
U.S. vehicles
Canadian
vehicles 19.4 US gal (73
)
0.16 US gal (0.58
) 2.8 US qt (2.7
)
1
2

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Specif ications
T echnical Inf ormation
367
Battery
FusesEngine
Tires
Lights
Alignment
12 V
12 V
60 W
24/2.2 CP
12 V
12 V
12 V
12 V
12 V
12 V
12 V
12 V
12 V
12 V
60 psi (420 kPa , 4.2 kgf/cm
)
3CP
21 W
21 W
55 W
5W
8W
8W
5W
2CP
5W
Capacity
Interior
Under-hood 12 V
12 V
55 AH/5 HR
72 AH/20 HR Type
BorexStroke
Displacement
Compression ratio
Spark plugs
Spark plug gap
3.54x3.58in(89x93mm)
212 cu-in (3,471 cm
)
11.0 : 1
IZFR6K11
SKJ20DR-M11
0.04 in (1.1 mm)
Size
Pressure 0.00 in (0.0 mm)
0.08 in (2.0 mm)
0°8’
1°15’
2°10’
P245/50R17 98V
T155/70D17 110M
32 psi (220 kPa , 2.2 kgf/cm
)
30 psi (210 kPa , 2.1 kgf/cm)
SOHC VTEC V-6 gasoline engine
See page 359and 360or the fuse
label attached to the inside of
each fuse box cover.
See page 358or the fuse box
cover.
Headlights (High Beam)
Front turn signal
Front side marker
Rear turn signal lights
Back-up light
Fog lights
License plate lights
Ceiling lights
Vanity mirror lights
Door courtesy lights
Trunk light
Low beam headlight bulbs are a type of high voltage discharge
tube (D2S). Toe-in
Camber
Caster
Front
Rear
Front
Rear
Front
Front
Rear
NGK:
DENSO:
Front/Rear
Spare
Front
Rear
Spare
(Amber)
: (Amber)
0
0.1 mm

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The burning of gasoline in your
vehicle’s engine produces several by-
products. Some of these are carbon
monoxide (CO), oxides of nitrogen
(NOx), and hydrocarbons (HC).
Gasoline evaporating f rom the tank
also produces hydrocarbons. Con-
trolling the production of NOx, CO,
and HC is important to the environ-
ment. Under certain conditions of
sunlight and climate, NOx and HC
react to f orm photochemical ‘‘smog.’’
Carbon monoxide does not contri-
bute to smog creation, but it is a
poisonous gas.
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.
Your vehicle has a positive
crankcase ventilation system. This
keeps gasses that build up in the
engine’s crankcase f rom 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.
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 .
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 pages
and .300
299
Emissions Cont rols
The Clean Air Act
Crankcase Emissions Control
System Evaporative Emissions Control
System
Onboard Ref ueling Vapor
Recovery
T echnical Inf ormation
371

The exhaust emissions controls
include f our systems: PGM-FI,
ignition timing control, exhaust gas
recirculation, and three way catalytic
converter. These f our 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 f uel 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 operating
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 emissions control systems are
designed and certif ied to work
together 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 vehicle.
The emissions control systems are
covered by warranties separate from
the rest of your vehicle. Read your
warranty manual f or more informa-
tion.
The three way catalytic converters
are in the exhaust system. Through
chemical reactions, they convert HC,
CO, and NOx in the engine’s exhaust
to carbon dioxide (CO ), nitrogen
(N ), and water vapor.
2
2
Emissions Cont rols
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
372

The three way catalytic converters
contain precious metals that serve as
catalysts, promoting chemical
reactions to convert the exhaust
gasses without af f ecting the metals.
The catalytic converters are ref erred
to as three-way catalysts, since they
act on HC, CO, and NOx.
Replacement units must be original
Acura parts or their equivalent.
The three way catalytic converters
must operate at a high temperature
for the chemical reactions to take
place. They can set on f ire any
combustible materials that come
near them. Park your vehicle 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 vehicle’s three way
catalytic converters.
Always use unleaded gasoline.
Even a small amount of leaded
gasoline can contaminate the
catalyst metals, making the three
way catalytic converters
inef f ective.
Have your vehicle diagnosed and
repaired if it is misf iring, back-
f iring, stalling, or otherwise not
running properly. Keep the engine tuned-up.
Three Way Catalytic Converters
T echnical Inf ormation
373
THREE WAY CATALYTIC CONVERTER
THREE WAY CATALYTIC CONVERTERS

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 retested within the
next two or three days, you can
condition the vehicle f or retesting 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. Increase
the engine speed to 2,000 rpm, and
hold it there until the temperature
gauge rises to at least 1/4 of the
scale (about 3 minutes).
St at e Emissions T est ing
T esting of Readiness Codes
374