2004 HONDA S2000 catalytic converter

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´µ
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This shows how much f uel you have.
It may show slightly more or less
than the actual amount.
This shows the temperature of the
engine’s coolant. During normal
operation, the reading should be in
the middle of the gauge. In severe
driving conditions, the reading may
reach near the red mark. 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.The clock displays the time with the
ignition switch in the ON (II)
position.
When you f inish all the
adjustments, press the CLOCK
button. When you f inish the minute
adjustment, press and release the
CLOCK button. The hour display
will blink. Adjust the hour by
pressing the or button. Press and hold the CLOCK button
until the minute display blinks.
Adjusttheminutebypressingthe or button.
Turn the ignition switch to ON (II).
To set the clock:
1.
2.
3.
4.
163
Gauges
Inst rument s and Cont rols
Fuel Gauge T emperature GaugeClock
45
NOTICE:
CLOCK BUTTON
BUTTON BUTTON TEMPERATURE GAUGE
FUEL GAUGE
CLOCK
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.

Make sure the convertible top and
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 f ront wheels away f rom the
curb, and put the transmission in
f irst gear.
If the vehicle is f acing downhill,
turn the front wheels toward the
curb, and put the transmission 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.
Your Honda is equipped with disc
brakes at all f our wheels. A power
assist helps reduce the ef f ort needed
on the brake pedal. The ABS helps
you retain steering control when
braking very hard.
Resting your f oot on the pedal keeps
the brakes applied lightly, builds up
heat, and reduces their ef f ectiveness.
It also keeps your brake lights on all
the time, conf using drivers behind
you.
Constant application of the brakes
when going down a long hill builds
up heat and reduces their ef f ective-
ness. Use the engine to assist the
brakes by taking your f oot of f the
accelerator and downshif ting to a
lower gear.
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 on an
incline.
Parking, Braking System
Parking
Parking T ips
Braking System
Driving116

Thediagramsinthissectiongive
you the dimensions and capacities of
your Honda, 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 . 178
................................
Specif ications .180
DOT Tire Quality Grading ......................
(U.S. Vehicles) .182
.................................
Treadwear .182
......................................
Traction .182
.............................
Temperature .183
.................................
Tire Labeling .184 .......................
Emissions Controls .185
.....................
The Clean Air Act .185
Crankcase Emissions Control ....................................
System .185
Evaporative Emissions Control ....................................
System .185
...
Exhaust Emissions Controls . 186
....................
PGM-FI System .186
Ignition Timing Control ................................
System .186
Secondary Air Injection ................................
System .186
Three Way Catalytic ...........................
Converter .186
....................
Replacement Parts . 186
Onboard Ref ueling Vapor ................................
Recovery .186
..
Three Way Catalytic Converter . 187
..............
State Emissions Testing . 188
T echnical Inf ormat ion
T echnical Inf ormation177

The exhaust emissions controls
include f our systems: PGM-FI,
Ignition Timing Control, Secondary
Air Injection System, and Three Way
Catalytic Converter. These four
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 Fuel Control.
The Engine Control Module (ECM)
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 con-
ditions.During engine warm-up, air is
pumped into the exhaust to reduce
emissions when the engine is cold.
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 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.
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 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 .
This system constantly adjusts the
ignition timing, reducing the amount
of HC, CO, and NOx produced.
2
2
Emissions Cont rols
T echnical Inf ormation
Exhaust Emissions Controls
Onboard Ref ueling Vapor
Recovery Replacement Parts
PGM-FI Syst emSecondary A ir Inject ion Syst em
Three Way Catalytic Converter
Ignit ion T iming Cont rol Syst em
186

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.
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.
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 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
T echnical Inf ormation187
THREE WAY CATALYTIC CONVERTER

CONT INUED
Technical Descriptions......
DOT Tire Quality Grading . 182
.....
Emissions Control Systems . 185
Three Way Catalytic ...............................
Converter .187
.......................
Temperature Gauge .45
...................
Tensioners, Seat Belts . 16
..
Three Way Catalytic Converter . 187
....................................
Tire Chains .150
.........
Tire, How to Change a Flat . 155
.................................
Tire Labeling .184
...............................................
Tires .145
..............................
Air Pressure .146
...................................
Balancing .148
.........................
Checking Wear .147
.................
Compact Spare Tire . 154
......
DOT Tire Quality Grading . 182
......................................
Inf lation .146
..................................
Inspection .147
...................................
Replacing .148
......................................
Rotating .148
...........................................
Snow .149
............................
Specif ications .181
...................
Tools, Tire Changing . 155
Towing ......................
A Trailer, Do Not .118 ................
Emergency Wrecker . 176
..................
Trailer, Do Not Tow a . 118
Transmission Checking Fluid Level, 6-speed
..........
Manual Transmission . 134
...........................
Fluid Selection .134
..............
Identif ication Number . 178
Shif ting the 6-speed Manual
.........................
Transmission .114
.....................................
Treadwear .182
.......................................
Trip Meter .44
................................................
Trunk .54
........
Emergency Trunk Opener . 55
.................................
Opening the .54
...................
Open Monitor Light . 41
....................................
Turn Signals .48
Unexpected, Taking Care ..........................................
of the .153
....
Unif orm Tire Quality Grading . 182
........................
Unleaded Gasoline .100
.......
Used Oil, How to Dispose of . 132......................
Vehicle Dimensions .180
....
Vehicle Identif ication Number . 178
.............................
Vehicle Storage .152
.................................................
VIN .178
..................................
Viscosity, Oil .130
.............
WARNING, Explanation of . ii
.........
Warning Labels, Location of . 35
....................
Warranty Coverages .193
Washer, Windshield ........
Checking the Fluid Level . 134
.....................................
Operation .47
...........................................
Wheels .149
............
Alignment and Balance . 148
......................................
Wrench .155
....
Windows, Operating the Power . 59
Windshield .....................................
Def roster .77
.......................................
Washers .47
Index
U V
W
VII