catalytic converter Acura TL 2008 Owner's Manual

This shows the temperature of the
engine’s coolant. During normal
operation, the pointer should rise to
about the middle of the gauge. In
severe driving conditions, the pointer
may rise to the upper zone. If it
reaches the red (hot) mark, pull
safely to the side of the road. Turn to
page f or instructions and
precautions on checking the engine’s
cooling system.
This shows how much f uel you have.
It may show slightly more or less
than the actual amount. Driving
uphill or making turns can cause the
needle to f luctuate or the low f uel
indicator to come on early. The
needle returns to the bottom after
you turn of f the ignition.328
Temperature Gauge
Fuel Gauge
Gauges
Inst rument s and Cont rols
65
TEMPERATURE GAUGE
TACHOMETER SPEEDOMETER
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.
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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.
If your vehicle has an automatic
transmission, set the parking brake
bef ore you put the transmission in
Park. This keeps the vehicle f rom
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.
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.
If the vehicle is f acing uphill, turn
the front wheels away from the
curb. If you have a manual
transmission, put it in f irst gear.If the vehicle is f acing downhill,
turn the front wheels toward the
curb. If you have a manual
transmission, put it in reverse gear.
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.
Parking T ips
Parking
266
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µ
Thediagramsinthissectiongive
you the dimensions and capacities of
your vehicle and the locations of the
identif ication numbers. It also
includes inf ormation you should
know about your vehicle’s tires and
emissions control systems. ................
Identif ication Numbers .342
................................
Specif ications .344
DOT Tire Quality Grading
..........................
(U.S. Vehicles) .346
.................................
Tire Labeling .348
Tire Pressure Monitoring System
(TPMS) Required Federal ............................
Explanation .350
.......................
Emissions Controls .352
..
Three Way Catalytic Converter .354
........................
Emissions Testing .355
T echnical Inf ormation
Technical Inf ormation
341
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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 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 for more informa-
tion.
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 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.
This system constantly adjusts the
ignition timing, reducing the amount
of HC, CO, and NOx produced.
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) in
automatic transmission vehicles or
the engine control module (ECM) in
manual transmission vehicles 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.
2
2
Exhaust Emissions Controls Replacement Parts
PGM-FI System
Three Way Catalytic Converter
Exhaust Gas Recirculat ion (EGR)
Syst em
Ignit ion T iming Cont rol Syst em
Emissions Cont rols
Technical Inf ormation
353
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The three way catalytic converter
contains platinum, palladium, and
rhodium. These metals 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 Acura part
or its equivalent.
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. 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 Converter
354
THREE WAY CATALYTIC CONVERTER
WARM UP THREE WAY CATALYTIC
CONVERTERS
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ÎTechnical Descriptions....
DOT Tire Quality Grading .346
.....
Emissions Control Systems .352
Three Way Catalytic
...............................
Converter .354
.......................
Temperature Gauge .65
....................
Temperature, Outside .71
........
Temperature, Inside Sensor .132
..............
Tether Anchorage Points .46
..
Three Way Catalytic Converter .354
..................
Tilt the Steering Wheel .91
..........................
Time, Setting the .116
....................................
Tire Chains .312
.........
Tire, How to Change a Flat .319
Tire Pressure Monitoring
....................................
System .272
Low Tire Pressure/TPMS
...........................
Indicator .64,272
..............
TPMS System Failure .275
Tire Pressure Monitoring System ...................................
Messages .273
...............................................
Tires .306
..............................
Air Pressure .306
.........................
Checking Wear .309
..........................
Compact Spare .318
......
DOT Tire Quality Grading .346 ......................................
Inf lation .306
..................................
Inspection .309
...................................
Replacing .311
......................................
Rotating .310
...........................................
Snow .312
............................
Specif ications .345
.............................
Summer Tire .312
.......................
Traction Devices .312
..........................
Winter Driving .312
...................
Tools, Tire Changing .319
Towing
.....................................
A Trailer .276
................
Emergency Wrecker .337
...........................
Traction Devices .312
Transmission
Checking Fluid Level, ..............................
Automatic .292
.
Checking Fluid Level Manual .294
..................
Fluid Selection .292,294
..............
Identif ication Number .342
.............
Shif ting the Automatic .259
..................
Shif ting the Manual .256
.....................................
Treadwear .346
................................
Trip Computer .73
.......................................
Trip Meter .70 ................................................
Trunk .97
........
Emergency Trunk Release .98
.................................
Opening the .97
...................
Open Monitor Light .68
....................................
Turn Signals .86
Unexpected, Taking Care
..........................................
of the .317
....
Unif orm Tire Quality Grading .346
........................
Unleaded Gasoline .236
.......
Used Oil, How to Dispose of .289
.................
Vehicle Capacity Load .248
......................
Vehicle Dimensions .344
....
Vehicle Identif ication Number .342
Vehicle Stability Assist (VSA)
....................................
System .270
........
VSA System Indicator .61,270
...
VSA Activation Indicator .61,270
.........................
VSA Of f Switch .271
.............................
Vehicle Storage .315
.................................................
VIN .342
Index
U
V
VIII
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