2008 HONDA RIDGELINE engine

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Specif ications
304
Dimensions
Weights Air Conditioning
Seating Capacities Capacities
206.7 in (5,250 mm)
78.0 in (1,980 mm)
70.3 in (1,785 mm)
Length
Width
Height
Wheelbase
Track
122.0 in (3,100 mm)
67.1 in (1,705 mm)
66.9 in (1,700 mm)
See the tire information label
attached to the driver’s doorjamb.
Gross vehicle weight rating
Gross combined weight
rating (GCWR)
Maximum load limit
(Payload)
The GCWR must be reduced 2 percent for every 1,000 feet (305
meters) of elevation. 1,530 lbs (690 kg)
1,480 lbs (670 kg)
10,088 lbs (4,575 kg)
8.5 US qt (8.0
)
3.3 US qt (3.1)
5.3 US qt (5.0)
4.2 US qt (4.0
)
4.5 US qt (4.3
)
2.14 US gal (8.1
)
1.64 US gal (6.2)
22.01 US gal (83.3)
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
Refrigerant type
Charge quantity
Lubricant type
HFC-134a (R-134a)
21.2 22.9 oz (600 650 g) ND-OIL8
Total
Front
Rear 5
2
3Fuel tank
Engine
coolant
Engine oil
Automatic
transmission
fluid
Approx.
Front
Rear
1:
2:
1:
2:
3:
On vehicles without moonroof or navigation system
On vehicles with moonroof and navigation system Change
Total
Change
Including
filter
Without
filter
Total
Change
Total
1
2
3 1
2
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2008 Ridgeline

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Specif ications
Technical Inf ormation
305
Fuses
Engine
Alignment
Tires
Battery
Lights
Capacities Interior
Under-hood
Type
BorexStroke
Displacement
Compression ratio
Spark plugs
Toe-in
Camber
Caster
Size
Pressure3.50 x 3.66 in (89.0 x 93.0 mm)
211.8 cu-in (3,471 cm
)
10.0 : 1
IZFR5K-11
SKJ16DR-M11
0.00 in (0.0 mm)
0.00 in (0.0 mm) 0°50’
0°50’
1°53’
P245/65R17 105T
T165/90R17 105M
32 psi (220 kPa , 2.2 kgf/cm
)
60 psi (420 kPa , 4.2 kgf/cm)
Capacity 12 V 60 AH/5 HR72 AH/20 HR
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
3.8 W
2W
3.4 W
1.4 W
3CP
5W
8W
3CP
3CP
18 W
21/5 W
21 W
28/8 W
60/55 W (HB2)
Headlights
Front turn signal/Parking/
Hazard lights
Rear turn signal/hazard lights
Brake/Taillights
Back-up lights
License plate lights
High-mount brake lights
Individual map lights
Bed lights
Console compartment light
Glove box light
Vanity mirror light
Door courtesy lights 2.79 US qt (2.64
)
3.01 US qt (2.85)
0.45 US qt (0.43
)
0.48 US qt (0.45)
4.8 US qt (4.5
)
Rear
differential
fluid
Transfer
assembly
fluid
Windshield
washer
reservoir See page297or the fuse label
attached to the inside of the fuse
box lid under the dashboard.
See page296or the fuse box lid.
Water cooled 4-stroke SOHC VTEC, V6 gasoline engine
Front/Rear
Spare
Front/Rear
Spare
Front
Rear
Front
Rear
Front
Front
Rear NGK:
DENSO:
High/Low
Change
Total
Change
Total
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Î
ÎThe 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. 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.
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 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 Clean Air Act
Crankcase Emissions Control
System
Evaporative Emissions Control
System
Onboard Ref ueling Vapor
Recovery
Emissions Cont rols
312
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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 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 ), nitrogen
(N ), and water vapor.
The emissions control systems are
covered by warranties separate from
the rest of your vehicle. Read your
warranty manual for 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
Honda replacement parts or their
equivalent f or repairs. Using lower
qualitypartsmayincreasethe
emissions f rom your vehicle.
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
313
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2008 Ridgeline

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
combustible materials that come
near it. Park your vehicle away from
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 converter.
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 well maintained.
Have your vehicle 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 Honda part
or its equivalent.
Three Way Catalytic Converter
314
THREE WAY CATALYTIC CONVERTER
WARM UP THREE WAY CATALYTIC
CONVERTERS
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2008 Ridgeline

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.
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.
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).
Without touching the accelerator
pedal and let the engine idle f or 20
seconds.Select a nearby lightly traveled
major highway where you can
maintain a speed of 50 to 60 mph
f or at least 20 minutes. Drive on
the highway in D. Do not use the
cruise control. When traf f ic allows,
drive f or 90 seconds without
moving the accelerator pedal.
(Vehicle speed may vary slightly;
this is okay.) If you cannot do this
f or a continuous 90 seconds
because of traf f ic conditions, drive
f or at least 30 seconds, then repeat
it two more times (f or a total of 90
seconds).
1. 2.
3.
4.
5.
6.
7.
CONT INUED
T esting of Readiness Codes
Emissions T esting
Technical Inf ormation
315
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Then drive in city/suburban
traffic for at least 10 minutes.
When traf f ic conditions allow, let
the vehicle coast f or several
seconds without using the
accelerator pedal or the brake
pedal.
Make sure the vehicle has been
parked with the engine of f f or 30
minutes.
If the testing f acility determines the
readiness codes are still not set, see
your dealer.
8.
9.
Emissions T esting
316
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2008 Ridgeline

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
Purchasing Factory Authorized Manuals Service Manual:
Electrical T roubleshooting Manual:
Body Repair Manual:
(U.S. only)
Authorized Manuals
321
Form Description
2006-08 Honda Ridgeline Service Manual 2008 Honda Ridgeline
Electrical Troubleshooting Manual 2006 Model Series Ridgeline Body Repair Manual
2008 Honda Ridgeline Owner’s Manual
2008 Honda Ridgeline Navigation Manual 2008 Honda Ridgeline Quick Start Guide 2008 Ridgeline Honda Service History
Order Form for Previous Years-Indicate Year and Model Desired
Publication
Form Number 61SJC02
61SJC02EL
61SJC30
31SJC620
31SJC810
31SJCQ20
31SJCM20 HON-R
www. helminc. com
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