1992 HONDA PRELUDE catalytic converter

Technical Information
The diagrams in this section give
you the dimensions and capacities
of your Honda, and the locations of
the identification numbers. The explanations of several electronic
and mechanical systems on your Honda are for the more technically-
oriented owner. Identification Numbers............... 204
Specifications................................ 206
Anti-lock Brake System ............. 208
Supplemental Restraint
System........................................ 209

Four Wheel Steering ................... 210
Emission Controls......................... 211 The Clean Air Act.................... 211
Crankcase Emission Control
System.................................... 211

Evaporative Emission Control
System.................................... 211

Exhaust Emission Controls.... 212 PGM-FI System.................... 212

Ignition Timing Control
System................................ 212

Exhaust Gas
Recirculation..................... 212

Catalytic Converter............. 212

Replacement Parts................... 212

Catalytic Converter..................... 213

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Emission Controls

Exhaust Emission Controls

The exhaust emission controls
include four systems: PGM-FI,
Ignition Timing Control, Exhaust
Gas Recirculation and 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 emission control systems
are separate from the crankcase
and evaporative emission control

systems.

PGM-FI System
The PGM-FI System on your car
has three sub systems: Air Intake,
Electronic Control, and Fuel
Control. The Electronic Control
Unit (ECU) uses various sensors to
determine how much air is going
into the engine. It then controls
how much fuel to inject under all
operating conditions. Ignition Timing Control System
This system constantly adjusts the
ignition timing, reducing the
amount of HC, CO and NOx

produced.

Exhaust Gas Recirculation (EGR)
The EGR system takes some of the
exhaust gas and routes it back into
the intake manifold. Adding ex-
haust gas to the air/fuel mixture re-
duces the amount of NOx produced
when the fuel is burned.
Catalytic Converter
The 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 2), dinitrogen
(N 2), and water vapor.
Replacement Parts

The emission control systems are

designed and certified to work to-

gether in reducing emissions to
levels that comply with the Clean

Air Act. To make sure the emis-
sions remain low, you should use

only new genuine Honda replace-

ment parts or their equivalent for

repairs. Using lower quality parts
may increase the emissions from

your car .

The emissions control systems are

covered b y
warranties separate

from the rest of your car. Read

your warranty manual for more
information.
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Catalytic Converter
The catalytic converter contains
platinum and rhodium. These
metals serve as catalysts, pro-
moting chemical reactions to con-
vert the exhaust gasses without
affecting the metals. The catalytic
converter is referred 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 catalytic converter must ope-
rate at a high temperature for the
chemical reactions to take place. It
can set on fire any combustible
materials that come near it. Park your car away from high grass, dry
leaves, or other flammables. A defective catalytic converter
contributes to air pollution, and can
impair your engine's performance.
Follow these guidelines to protect
your car's catalytic converter.
Always use unleaded gasoline.
Even a small amount of leaded
gasoline can contaminate the
catalyst metals, making the
converter ineffective. Keep the engine tuned-up.Have your car diagnosed and
repaired if
it is misfiring, back-
firing, continuing to run after
you turn off the engine, stalling,
or otherwise not running proper-
ly.

Technical Information

CATALYTIC CONVERTERProCarManuals.comMain Menu Table of Contents s t

Index

Brightness Control, Instruments................................. 41
Brights, Headlights........................ 40
Bulb Replacement Back-up Lights......................... 169
Brake Lights.............................

169
Front Parking

Lights ..............
165
Front Side

Marker Lights......
166
Headlights................................. 164
High-mount Brake

Light........
168
License Plate

Lights................
171
Rear Sid
e
Marker Lights........
170

Specifications............................ 207

Turn Signa
l
Lights ..................
167
Bulbs, Halogen.............................
.

164

Cables, Jum
p
Starting With........
191

Capacities Chart...........................
206

Carbo
n Monoxide Hazard ............ 25

Cargo, Loading.............................
106

Cassette Playe r

Care..............................................
. 94

Operation.............................. 81,
91

Catalytic Converter.................... .

213

CAUTION, Explanatio
n
of............ ii
Center Console Compartment..... 64
Certification Label....................... 204

Chains............................................. 163

Change Oil
How to........................................ 137

When to...................................... 129

Changing a Flat Tire................... 185

Changing Engine Coolant........... 140

Charging System Light........ 33, 196
Check Engine Light............. 34, 197

Checking
Automatic Transmission
Fluid........................................
144

Battery Condition.................... .

152

Brake Flui
d
...............................
146

Clutch Fluid.............................
.

147

Engine Belts.............................
.

158

Engine Oil.................................
.

135

Fuses........................................... 199

Manual Transmissio
n
Fluid...
145
Power Steerin
g
Fluid..............
148
Radiator Coolant.....................
.

139
Checklist, Befor
e
Driving...........
108
Child Safety....................................
.
18
Cigarette Lighter........................... 65
Cleaner, Air...................................
149

Cleaning

Exterior......................................
176

Interior....................................... 179

Seat Belts...................................

179

Vinyl........................................... 179
CLEAN Light................................
.
94

Clock, Setting the.......................... 63

Clutch Fluid..................................
147

CO i n
the Exhaust........................
211
Cold Weather
,
Starting in...........
110

Compact Spare.............................
.

184

Consumer Information................
217

Controls, Instruments
and............ 29

Coolant
Adding........................................ 139

Checking.................................... 139

Proper Solution......................... 139

Temperature Gauge.................. 38

Corrosion Protection................... 180

Crankcase Emission Control
System........................................ 211

Cruise Control Operation ............. 44

Customer Relations Office......... 217ProCarManuals.comMain Menu s t

Index
Reminder Light and Beeper..... 33

Replacement.................................. 9

System Components.................... 6
Tether Attachment Points....... 21
Use During Pregnancy................ 8
Wearing a Lap/Shoulder Belt.... 7
Seats, Adjusting the....................... 51
Serial Number............................... 204
Service Intervals..........................

129
Service Manual............................
.

221
Service Station Procedures........ 100
Setting th
e
Clock............................ 63
Shifting The Automatic Transmission
..................................................

112

The 5- Speed
Transmission.....
111
Shift Leve
r
Position
Indicator...............................
36, 112
Side Marke r
Lights, Bulb

Replacement in.........................
166

Signaling Turns............................. .
41
Snow Tires.....................................
163
Solvent-type Cleaners................ .

176

Sound Syste
m
................................. 75

Spare Tire
Inflating .....................................
184

Specifications............................ 207

Spar
k Plugs, Replacing............... 150
Specifications Charts.................. 206

Speed Control.................................. 44

Speedometer.................................... 37

SRS Indicator........................... .
14, 34

START (Ignition Key Position)..

47

Starting th e
Engine......................
109
In Col
d
Weather
at High Altitude....................
110
With a Dea
d Battery................
191
Steam Comin
g
from Engine.......
193
Steering Whee
l

Adjustment.................................
. 43

Anti-theft Column Lock........... 47
Stereo Sound System..................... 75
Storing Your Car..........................
173

Sunroof............................................. 58

Closin
g Manually.....................
198

Operation.....................................
58

Supplementa
l Restraint System
Service Precautions................... 15

Servicing...................................... 14

SRS Indicator........................ 14, 34

System Components.................. 10

Technical Description............ .

209

Tachometer.....................................
37

Taillights
, Changing Bulbs in.... 169
Taking Care of the
Unexpected ...............................
183

Tape Player.................................... .
81
Technical Descriptions Anti-lock Brake System ......... 208Catalytic Converter................. 213
Emission Control Systems......
211
Four Whee l
Steering ............... 210
Supplemental Restraint
System....................................
209

Temperature Gauge..................... .
38
Tether Attachment Points...........
21

Time, Settin g
the ........................... 63

Tire Chains.................................... 163
Tire, How to Change a Flat........ 185

Tires................................................ 158
Air Pressure.............................. 158Checking Wear......................... 159
Compact Spare.......................... 184

DOT Tire Quality Grading..... 161

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