Engine Exhaust Controls The engine exhaust emission

Engine Exhaust Controls The engine exhaust emission
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Engine Exhaust Controls
The engine exhaust emission control systems are designed to
control combustion during idle, acceleration, cruise, and
deceleration. These systems are entirely separate from the
crankcase and evaporative emission control systems described previously.
PGM-FI System
The PGM-FI system consists of three independent subsystems; Air Intake, Electronic Control and Fuel Control,
thus allowing more accurate control of air/fuel ratios under
all operating conditions. The Electronic Control Unit (ECU)
detects the amount of air drawn into the cylinders and determines the amount of fuel to be injected to provide the optimum air/fuel ratio for all engine needs.
Ignition Timing Control System
This system automatically controls the ignition timing to
reduce the amount of HC and NOx.
Exhaust Gas Recirculation (EGR)
The EGR system is designed to control the formation of oxides of nitrogen (NOx) caused when fuel mixture burns at
high temperature. It works by recirculating exhaust gas
through the EGR valve and intake manifold into the combustion chambers where it reduces peak temperature by
diluting the air/fuel mixture.
Catalytic Converter
The catalyst is used to convert hydrocarbons (HC), carbon
monoxide (CO) and oxides of nitrogen (NOx) in the exhaust
gas to carbon dioxide (CO 2 ), dinitrogen (N2) and water
Air Supply System
A secondary air supply system helps improve emission performance by promoting more complete combustion during
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Catalytic Converter
A catalytic converter is installed in the exhaust system to help
clean-up the harmful exhaust gases that can cause air
To be effective, the converter must work at high temperature,
so don't park your car over dry grass, leaves or anything else
that could burn easily.
To stay effective, the converter must not be contaminated by
leaded gasoline; use only unleaded gas as explained on page
CAUTION: The converter can be overheated and damaged if
it's fed too much unburned fuel mixture from the engine, so:
— Don't push or tow the car to start it; if the battery is dead,
jump start the car as shown on page 1 3 1 .
— Dont't turn the key off while the engine is running above
idle speed.
— Don't change the ignition timing, or remove any emission
control parts.
— Use only the spark plugs specified in this manual.
— Don't keep driving your car if it isn't running properly, or if
its Check Engine warning light comes on; have it checked
by your Acura dealer.
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Warranty Service
The following warranties are provided with every new vehicle.
1. New Car Limited Warranty
2. Emission Control Systems Warranty
3. Emission Controls Performance Warranty
4. Battery Limited Warranty
5. Rust Perforation Limited Warranty
6. Accessory Limited Warranty
7. Replacement Parts Limited Warraty
8. Replacement Muffler Lifetime Limited Warranty
9. Seat Belt Limited Warranty
All warranties pertaining to your car can be found in the Warranty booklet provided with your new car except the required
maintenance schedule which is contained here in the Owner's
If you are unable to obtain warranty service or are dissatisfied
with the warranty decision or service you received at an
authorized Acura dealership, you should review the matter
with that dealership's Service Manager. This will normally
resolve your problem. If it does not resolve your problem, you
should appeal the decision with the owner of the dealership.
Please bear in mind that your problem will likely be resolved in
the dealership, using the dealer's facilities, equipment and personnel. So it is very important that your initial contact be with
the dealer or his management.
After following these steps, if you wish to have the matter
reviewed by the Acura Automobile Division you should contact: The Acura Automobile Division, Customer Relations Office, American Honda Motor Co., Inc., 100 W. Alondra Blvd.,
Gardena, CA. 90248
Telephone: 1-800-382-2238.
When contacting the Acura Automobile Division, please provide us with the following information.
Vehicle Identification Number
Servicing Dealer Name and Address
Date of Purchase
Mileage on your Car
Your Name, Address, and Phone Number
Nature of Problem
Selling Dealer
After a review of the facts, you will be advised of what can be
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Service Manuals
An Acura Service Manual is
available for your car. It is written for the Journeyman mechanic, but it is simple enough
for most mechanically-inclined
owners to understand.
An Electrical Troubleshooting
Manual is also available for
your car. This manual complements the Service Manual
by providing in-depth troubleshooting information for each
electrical circuit in your car.
You can purchase these manuals through your Acura dealer's
Parts Department.
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