2005 Acura RL catalytic converter

This shows the temperature of the
engine’s coolant. During normal
operation, the pointer should rise
from the bottom white mark to about
the middle of the gauge. In severe
driving conditions, such as very hot
weather or a long period of uphill
driving, the pointer may rise to theupper end of the white section of the
gauge. If it reaches the red (hot)
mark, pull saf ely to the side of the
road. For more inf ormation, see page
. This shows how much f uel you
have. It may show slightly more
or less than the actual amount.
The needle returns to the
bottom after you turn off the
ignition.
345
Gauges
Temperature Gauge Fuel Gauge
68
U.S. model is shown.TACHOMETER SPEEDOMETER TEMPERATURE GAUGE
FUEL GAUGE
Avoid driving with an extremely low
f uel level. Running out of f uel could
cause the engine to misf ire, damaging
the catalytic converter.

If the SH-AWD indicator on the
instrument panel stays on, and the
multi-inf ormation display shows an
SH-AWD message, there is a
problem with the system. Your
vehicle still has normal f ront-wheel
drive with vehicle stability assist
(VSA), but does not have the
advantages of SH-AWD. Have your
vehicle checked by a dealer as soon
as possible.Check the indicator on the
instrument panel to verif y that the
security system is set. If the vehicle is f acing downhill,
turn the front wheels toward the
curb. If the vehicle is f acing uphill, turn
the f ront wheels away f rom the
curb. Never park over dry leaves, tall
grass, or other f lammable
materials. The hot three way
catalytic converter could cause
these materials to catch on fire.
Make sure the parking brake is
f ully released bef ore driving away.
Driving with the parking brake
partially set can overheat or
damage the rear brakes.
Always use the parking brake when
you park your vehicle. Make sure
the parking brake is set f irmly or
your vehicle may roll if it is parked
on an incline.
Set the parking brake bef ore you put
the transmission in Park. This keeps
the vehicle from moving and putting
pressure on the parking mechanism
in the transmission.
Make sure the moonroof and the
windows are closed.
Turn of f the lights.
Place any packages, valuables, etc.,
in the trunk or take them with you.
Lock the doors.
SH-A WD System, Parking
Parking
Parking T ips
Driving
273

................
Identif ication Numbers . 364
................................
Specif ications .366
DOT Tire Quality Grading ......................
(U.S. Vehicles) .368
.................................
Treadwear .368
......................................
Traction .368
.............................
Temperature .369
.................................
Tire Labeling .370 .......................
Emissions Controls .371
.....................
The Clean Air Act .371
Crankcase Emissions Control ....................................
System .371
Evaporative Emissions Control ....................................
System .371
Onboard Ref ueling Vapor ................................
Recovery .371
...
Exhaust Emissions Controls . 372
....................
PGM-FI System .372
Ignition Timing Control ................................
System .372
Exhaust Gas Recirculation ...................
(EGR) System . 372
Three Way Catalytic ...........................
Converter .372
....................
Replacement Parts . 372
..
Three Way Catalytic Converter . 373
..............
State Emissions Testing . 374
Thediagramsinthissectiongive
you the dimensions and capacities of
your vehicle, and the location of
identif ication numbers. It also
includes inf ormation you should
know about your vehicle’s tires and
emissions control systems.
T echnical Inf ormat ion
T echnical Inf ormation
363

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

.
Taking Care of the Unexpected . 335
Technical Descriptions ......
DOT Tire Quality Grading . 368
.....
Emissions Control Systems . 371
Three Way Catalytic .............................
Converters .373 .......................
Temperature Gauge .68
........
Temperature, Inside Sensor . 170
....................
Temperature, Outside . 71
..............
Tether Anchorage Points . 49
Three Way Catalytic .................................
Converters .373
Tilt/Telescopic Steering .........................................
Wheel .111
....................................
Timing Belt .313
....................................
Tire Chains .329
.........
Tire, How to Change a Flat . 337
Tire Pressure Monitoring System ..................................
(TPMS) .277
Monitoring Tire Pressure ..................................
Reading .329
...........
TPMS System Warning . 280
...............................................
Tires .325
..............................
Air Pressure .326
........................................
Chains .329
.........................
Checking Wear .326
..........................
Compact Spare .336
......
DOT Tire Quality Grading . 368
......................................
Inf lation .325
..................................
Inspection .326
...................................
Replacing .328
......................................
Rotating .327
Side Marker Lights, Bulb
.........................
Replacement in .317
.............................
Signaling Turns .104
.....................................
Snow Tires .329
................................
Sound System .171
Spare Tire ......................................
Inf lating .336
............................
Specif ications .367
....................
Specif ications Charts . 366
................................
Speed Limiter .270
.......................................
Spotlights .160
..........
SRS, Additional Inf ormation . 24
...
Additional Safety Precautions . 35
..
How the SRS Indicator Works . 32
How Your Airbags ............................
Work .27, 30,32
........................
SRS Components .24
..................................
SRS Service .34
.............................
SRS Indicator .32 ,61
START (Ignition Switch .....................................
Position) .115
.......................
Starting the Engine .263
...................
Auto Control Mode . 263
In Cold Weather at High ..................................
Altitude .263
................
With a Dead Battery . 343 ..............
State Emissions Testing . 374
........
Steam Coming f rom Engine . 345
Steering Wheel ..............................
Adjustments .111
...........
Anti-thef t Column Lock . 115
......................
Position Memory .124
Steering Wheel Buttons/ .....................................
Switches .198
...................
Stereo Sound System . 171
....................
Storing Your Vehicle .333
......................................
Sun Visors .156
Supplemental Restraint ................................
System .11, 24
......................................
Servicing .34
.........................
SRS Indicator .32 ,61
...................
System Components . 24
..................................
Synthetic Oil .305
Index
T
VIII