2008 Acura RL engine

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
Technical Inf ormation
463
ENGINE NUMBER
TRANSMISSION NUMBER
\f—\f—
y\fy
(\fy\fy
2008 RL

µµÎ
Î
Î
Î
Specif ications
464
Dimensions
Weights Capacities
Air Conditioning
Seating 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)
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)
7.6 US qt (7.2)
Length
Width
Height
Wheelbase
Track
Gross vehicle weight rating See the certification label attached
to the driver’s doorjamb.
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
Refrigerant type
Charge quantity
Lubricant type ND-OIL8
15.8 17.60 oz (450 500 g)HFC-134a (R-134a)
Total
Front
Rear
5
2
3 0.77 US qt (0.73
)
0.79 US qt (0.75)
19.4 US gal (73
)
2.8 US qt (2.7
)
0.16 US gal (0.58
)
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
1
2
\f—\f—
y
\f\f\f\fy
(\fy\fy
2008 RL

ÎÎ
Î
Î
µ
µ
µ
µ Î
Î
Î
Î µ
µ
µ
µ
µ
µ
µ
µ
µ
µ
µ
µ
µ
Specif ications
Technical Inf ormation
465
Lights
Fuses Battery Engine
Alignment
Tires
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 3.54x3.58in(89x93mm)
212 cu-in (3,471 cm
)
11.0 : 1
IZFR6K11
SKJ20DR-M11
SOHC VTEC V-6 gasoline engine
Headlights (High Beam)
Front turn signal/parking lights
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 12 V 5 W 2CP 2W
8W
8W
5W
55 W
21 W
21 W
3CP
Low beam headlight bulbs are a type of high voltage discharge
tube (D2S).
Interior
Under-hood Capacity 12 V 12 V72 AH/20 HR
55 AH/5 HR
See page453and454or the fuse
label attached to the inside of
each fuse box cover.
See page452or the fuse box
cover. 12 V 21 W
Type
BorexStroke
Displacement
Compression ratio
Spark plugs
0.00 in (0.0 mm)
0.08 in (2.0 mm)0°8’
1°15’
2°10’
P245/50R17 98V
245-680R460A 102V T155/70D17 110M
32 psi (220 kPa , 2.2 kgf/cm
)
30 psi (210 kPa , 2.1 kgf/cm)
60 psi (420 kPa , 4.2 kgf/cm)
Toe-in
Camber
Caster
Size
Pressure
Front
Rear
Front
Rear
Front
Front
Rear NGK:
DENSO:
Front/Rear
Spare
Front
Rear
Spare
1 : Michelin PAX system model
2 : If equipped
(HB3)
(Amber)
(5W) (Amber)
(H11)
On model without adaptive front lighting system
1:
2: (Amber)
1
2
2
1
——
y
y
(yy
2008 RL

ÎÎ
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 .
374394
The Clean Air Act
Crankcase Emissions Control
System Evaporative Emissions Control
System
Onboard Ref ueling Vapor
Recovery
Emissions Cont rols
472
\f—\f—
y
\f\f
\fy
(\fy\fy
2008 RL

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
come 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
quality parts may increase the
emissions f rom your vehicle.
The emissions control systems are
covered by warranties separate from
the rest of your vehicle. Read your
warranty manual for 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
Exhaust Emissions Controls Replacement Parts
PGM-FI System Ignit ion T iming Cont rol Syst em
Exhaust Gas Recirculat ion (EGR)Syst em
Three Way Catalytic Converter
Emissions Cont rols
Technical Inf ormation
473
\f—\f—
y
\f\f\fy
(\fy\fy
2008 RL

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 well maintained.
Three Way Catalytic Converters
474
THREE WAY CATALYTIC CONVERTERSTHREE WAY CATALYTIC CONVERTER
\f—\f—
y
\f\f
y
(\fy\fy
2008 RL

If you take your vehicle f or an
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). 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).
Make sure the vehicle has been
parked with the engine of f f or 6
hours or more.
Make sure the ambient
temperature is between 40° and
95°F. Without touching the accelerator
pedal and let the engine idle f or 20
seconds.
1.
2.
3. 4.
5.
6.
CONT INUED
T esting of Readiness Codes
Emissions T esting
Technical Inf ormation
475
\f—\f—
y
\f\fy
(\fy\f\fy
2008 RL

T he publications shown below can be purchased f rom Helm
Incorporated. You can order by phone or online:Call Helm Inc. at 1-800-782-4356 (credit card orders only)
Go online at
If you are interested in other years or models, contact Helm Inc.
at 1-800-782-4356.Covers maintenance and recommended procedures f or
repair to engine and chassis components. It is written
f or the journeyman mechanic, but it is simple enough
f or most mechanically inclined owners to understand.
Complements the Service Manual by providing in-depth
troubleshooting inf ormation f or each electrical circuit
in your vehicle.
Describes the procedures involved in the replacement
of damaged body parts.
Authorized Manuals
(U.S. only)
Purchasing Factory Authorized Manuals Service Manual:
Electrical T roubleshooting Manual:
Body Repair Manual:
Authorized Manuals
481
Form Description
2005-2008 Acura RL Service Manual 2005-2008 Acura RL
Electrical Troubleshooting Manual 2005 Model Series Acura RL Body Repair Manual
2008 Acura RL Owner’s Manual
2008 Acura RL Navigation System Manual 2008 Acura RL Maintenance Journal2008 Acura RL Quick Start GuideOrder Form for Previous Years
Indicate Year and Model Desired
Publication
Form Number 61SJA03
61SJA03EL
61SJA30
31SJA630
31SJA810
31SJAM30 31SJAQ30 ACU-R
www. helminc. com
\f—\f—
y
\f\f\fy
(\fy\fy
2008 RL