Page 260 of 288

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 . 260
................................
Specif ications .262
DOT Tire Quality Grading .....................
(U.S.Vehicles) .265
Unif orm Tire Quality ..................................
Grading .265
.................................
Treadwear .265
......................................
Traction .265
.............................
Temperature .266
.................................
Tire Labeling .267
.......................
Emissions Controls .268
.....................
The Clean Air Act .268
Crankcase Emissions Control ....................................
System .268
Evaporative Emissions Control ....................................
System .268
Onboard Ref ueling Vapor ................................
Recovery .268
...
Exhaust Emissions Controls . 269
....................
PGM-FI System .269
Ignition Timing Control ................................
System .269
Three Way Catalytic ...........................
Converter .269
....................
Replacement Parts . 269
..
Three Way Catalytic Converter . 270..............
State Emissions Testing . 271
T echnical Inf ormat ion
T echnical Inf ormation
259
Page 270 of 288

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) 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. Itthen controls how much f uel to inject
under all operating conditions.
The emissions control systems are
covered by warranties separate from
the rest of your vehicle. Read your
warranty manual f or more informa-
tion.
This system constantly adjusts the
ignition timing, reducing the amount
of HC, CO, and NOx produced.
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
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.
2
2
Emissions Cont rols
Exhaust Emissions Controls Replacement Parts
PGM-FI Syst emIgnit ion T iming Cont rol Syst em
Three Way Catalytic Converter
T echnical Inf ormation
269
Page 271 of 288

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.
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 com-
bustible materials that come near it.
Parkyourvehicleawayfromhigh
grass, dry leaves, or other f lamma-
bles.
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.
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 Acura part
or its equivalent.
Keep the engine tuned-up.
Have your vehicle diagnosed and
repaired if it is misf iring, back-
f iring, stalling, or otherwise not
running properly.
Three Way Catalytic Converter
270
THREE WAY CATALYTIC CONVERTER
Page 281 of 288

.......................................
Child Seats .30
...........
Lower Anchorage Points . 39
..........
Tether Anchorage Points . 43
..............
Climate Control Sensors . 111
.........................
Clock, Setting the .141
...................................
Clutch Fluid .213
............
Cold Weather, Starting in . 167
..............................
Compact Spare .236
...................
Console Compartment . 97
.................
Consumer Inf ormation . 274
Coolant ........................................
Adding .207
....................................
Checking .158
.........................
Proper Solution .207
...................
Temperature Gauge . 61
Crankcase Emissions Control ........................................
System .268
............
Cruise Control Operation . 143
.............
Customer Service Of f ice . 277
................
DANGER, Explanation of . ii
...................................
Dashboard .4, 52
................
Daytime Running Lights . 68
............
Def ects, Reporting Saf ety . 276................
Def ogger, Rear Window . 69
....................................
Dimensions .262
...............
Dimming the Headlights . 66
Dipstick ..........
Automatic Transmission . 209
..................................
Engine Oil .157
..........................
Directional Signals .66
........
Disc Brake Wear Indicators . 178
.....................
Disposal of Used Oil .205
Doors ..............
Locking and Unlocking . 74
..........
DOT Tire Quality Grading . 265
Downshif ting, 5-speed Manual
.............................
Transmission .168
...........
Driver and Passenger Safety . 7
...........................................
Driving .165
....................................
Economy .159
..........
Dual Temperature Control . 109
..................
Dust and Pollen Filter . 223
..............................
Economy, Fuel .159
............
Emergencies on the Road . 235
.............
Battery, Jump Starting . 243
...........
Brake System Indicator . 250................
Changing a Flat Tire . 237
.....
Charging System Indicator . 248
..................
Checking the Fuses . 254
.....
Low Oil Pressure Indicator . 247
...
Malf unction Indicator Lamp . 248
...
Manually Closing Moonroof . 251
..................
Overheated Engine . 245
...........................
Emergency Brake .93
......................
Emergency Flashers .69
......................
Emergency Towing .252
.......................
Emissions Controls .268
Engine ....
Coolant Temperature Gauge . 61
Malf unction Indicator ......................................
Lamp .248
..............
Oil Pressure Indicator . 247
..............
Oil, What Kind to Use . 202
...............................
Overheating .245
............................
Specif ications .262
....................
Speed Limiter . 169,174
.......................................
Starting .167
..........
Engine Speed Limiter . 169,174
.
Evaporative Emissions Controls . 268
...............................
Exhaust Fumes .48
Expectant Mothers, Use of Seat ........................................
Belts by .18
Index
DE
II