1998 HONDA CIVIC COUPE catalytic converter

Parking

Always use the parking brake when you park your vehicle. The indicator on the instrument panel shows that
the parking brake is not fully
released; it does not indicate that the
parking brake is firmly set. Make sure the parking brake is set firmly
or your vehicle may roll if it is
parked on an incline.
If your vehicle has an automatic
transmission, set the parking brake
before you put the transmission in Park. This keeps the vehicle from
moving and putting pressure on the
parking mechanism in the
transmission — making it easier to move the shift lever out of Park
when you want to drive away. If the vehicle is facing uphill, turn
the front wheels away from the curb.
If you have a manual transmission,
put it in first gear.
If the vehicle is facing 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 fully
released before driving away.
Driving with the parking brake
partially set can overheat or damage
the rear brakes. Parking Tips Make sure the moonroof and the
windows are closed. Turn off the lights.
Place any packages, valuables, etc.,
in the trunk or take them with you. Lock the doors with the key or the
remote transmitter. Never park over dry leaves, tall
grass, or other flammable materials. The three way catalytic
converter gets very hot, and could
cause these materials to catch on

fire.

DrivingMain Menu Table of Contents s t

Technical Information

The diagrams in this section give you the dimensions and capacities of
your Honda, and the locations of theidentification numbers. The expla-
nations of several electronic and
mechanical systems on your Hondaare for the more technically-oriented
owner. Identification Numbers................. 230
Specifications................................. 232
Tire Information............................ 235 Tire Size Designation................ 235
Wheel Size Designation............ 235
Tire Speed Ratings.................... 235
Tire Pressure Adjustment For High Speed Driving............... 236
DOT Tire Quality Grading....... 236 Treadwear.............................. 236Traction.................................. 237
Temperature.......................... 237
Oxygenated Fuels.......................... 238
Driving In Foreign Countries....... 239 Emissions Controls........................ 240
The Clean Air Act...................... 240Crankcase Emissions Control
System.....................................240

Evaporative Emissions Control
System.....................................240

Exhaust Emissions Controls.... 241 PGM-FI System..................... 241
Ignition Timing Control System................................. 241
Exhaust Gas Recirculation (EGR) System.................... 241
Three Way Catalytic Converter............................ 241
Replacement Parts..................... 241
Three Way Catalytic Converter... 242

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Driving In Foreign Countries

Technical Information

If you are planning to take your
Honda outside the U.S. or Canada,
contact the tourist bureaus in the
areas you will be traveling in to find out about the availability of unleaded
gasoline with the proper octane
rating.

If unleaded gasoline is not available,
be aware that using leaded gasoline in your Honda will affect perfor-
mance and fuel mileage, and damage
its emissions controls. It will no
longer comply with U.S. and Canadian emissions regulations, and
will be illegal to operate in North
America. To bring your vehicle back into compliance will require the re-
placement of several components, such as the oxygen sensors and the
three way catalytic converter. These
replacements are not covered under
warranty.Main Menu Table of Contents s t

Emissions Controls

Exhaust Emissions Controls
The exhaust emissions controls include three systems: PGM-FI,
Ignition Timing Control and Three
Way Catalytic Converter. These three systems work together tocontrol the engine's combustion and
minimize the amount of HC, CO, and
NOx that comes out the tailpipe. The
exhaust emissions control systemsare separate from the crankcase and
evaporative emissions control

systems.

PGM-FI System

The PGM-FI System uses sequential multiport fuel injection.
It has three subsystems: Air Intake,Engine Control, and Fuel Control.
The Engine Control Module (ECM)/ Powertrain Control Module (PCM)/
Transmission Control Module (TCM-HX model only) 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 amountof HC, CO and NOx produced.
Exhaust Gas Recirculation (EGR)
System
Only on HX model

The Exhaust Gas Recirculation (EGR) system takes some of the
exhaust gas and routes it back into
the intake manifold. Adding exhaust
gas to the air/fuel mixture reduces
the amount of NOx produced when
the fuel is burned.
Three Way Catalytic Converter
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 (Co2), dinitrogen (N2), and water vapor. Replacement Parts

The emissions 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 emissions remain low, you should use only newGenuine Honda replacement parts or

their equivalent for repairs. Using

lower quality parts may increase the
emissions from 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.

Technical InformationMain Menu Table of Contents s t

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 affecting the metals.
The catalytic converter is referred to as a three-way catalyst, since it actson 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 fire any com-
bustible materials that come near it. Park your vehicle away from high
grass, dry leaves, or other flamma-

bles.
(U.S.: EX, Canada: Si)

A defective three way catalytic converter contributes to air pollution,
and can impair your engine's per-
formance. 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 ineffective.
(U.S.: DX, HX, Canada: DX)

Keep the engine tuned-up.
Have your vehicle diagnosed and
repaired if it is misfiring, back-
firing, stalling, or otherwise not running properly.

Technical Information
THREE WAY CATALYTIC CONVERTER
THREE WAY CATALYTIC CONVERTERMain Menu Table of Contents s t