2001 HONDA CIVIC engine

Your car has several identif ying
numbers located in various places.
The Vehicle Identif ication Number
(VIN) is the 17-digit number your
Honda dealer uses to register your
car f or warranty purposes. It is also
necessary f or licensing and insuring
your car. The easiest place to find
the VIN is on a plate fastened to the
top of the dashboard. You can see it
by looking through the windshield
on the driver’s side. It is also on the
Certification label attached to the
driver’s doorjamb, and is stamped on
the engine compartment bulkhead.
The VIN is also provided in bar code
on the Certification label.
Identif ication Numbers
T echnical Inf ormation
290
VVEEHHIICCLLEEIIDDEENNTTIIFFIICCAATTIIOONNNNUUMMBBEERR
CCEERRTTIIFFIICCAATTIIOONNLLAABBEELL

The Engine Number is stamped into
the engine block.
The Transmission Number is on a
label on top of the transmission.
Identif ication Numbers
T echnical Inf ormation291
EENNGGIINNEENNUUMMBBEERR
MMAANNUUAALLTTRRAANNSSMMIISSSSIIOONNNNUUMMBBEERR
AAUUTTOOMMAATTIICCTTRRAANNSSMMIISSSSIIOONNNNUUMMBBEERR

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Specif ications
T echnical Inf ormation
292 Dimensions
Weights
Engine
Capacities
174.6 in (4,435 mm)
67.3 in (1,710 mm)
56.9 in (1,445 mm)
103.1 in (2,620 mm)
57.9 in (1,470 mm)
57.9 in (1,470 mm)
2.95 x 3.72 in (75.0 x 94.4 mm) 11.9 US gal (45
, 9.9 Imp gal)
1.03 US gal (3.9
, 0.86 Imp gal)
101.7 cu-in (1.668 cm
)
9.5 9.9
Length
Width
Height
Wheelbase
Track
Gross vehicle weight rating See the certification label attached
to the driver’s doorjamb.
Type
BorexStroke
Displacement
Compression ratio
Spark plugs Water cooled 4-stroke
SOHC , SOHC VTEC
4-cylinder gasoline engine Fuel tank
Engine
coolant
Engine oil Automatic
transmission
fluid1.06 US gal (4.0
, 0.88 Imp gal)
1.35 US gal (5.1
, 1.12 Imp gal)
1.32 US gal (5.0, 1.10 Imp gal)
3.4 US qt (3.2
, 2.8 Imp qt)
3.7 US qt (3.5, 3.1 Imp qt)
3.2 US qt (3.0, 2.6 Imp qt)
3.5 US qt (3.3, 2.9 Imp qt)
4.4 US qt (4.2, 3.7 Imp qt)
1.6 US qt (1.5, 1.3 Imp qt)
1.7 US qt (1.6, 1.4 Imp qt)
2.9 US qt (2.7, 2.4 Imp qt)
6.2 US qt (5.9, 5.2 Imp qt)
2.6 US qt (2.5
, 2.2 Imp qt)
4.8 US qt (4.5, 4.0 Imp qt)
Including the coolant in the reserve tank and that remaining in the
engine.
Reserve tank capacity: 0.11 US gal (0.4
, 0.09 Imp gal)
See spark plug maintenance
section page 225 .
Excluding the oil remaining in the engine.
FrontRear
Approx.
1: 2: 3:4:
1 : DX, LX
2:EX
DX, LXEXChange
ManualAutomatic
Total ManualAutomatic
Change
Without filter
Total
ChangeTotal
ChangeTotal
U.S. Cars
Canada Cars
12
12 1 2
3 434
Manual trans-
mission fluidIncluding filter
Windshield
washer reservoir

ÎÎ
In Canada, Honda vehicles comply
with the Canadian Motor Vehicle
Saf ety Standards (CMVSS) f or
Emissions valid at the time they are
manuf actured.
The United States Clean Air Act
sets standards f or automobile
emissions. It also requires that
automobile manufacturers explain to
owners how their emissions controls
workandwhattodotomaintain
them. This section summarizes how
the emissions controls work.
Scheduled maintenance is on page
.
The burning of gasoline in your car’s
engine produces several byproducts.
Some of these are carbon monoxide
(CO), oxides of nitrogen (NOx) and
hydrocarbons (HC). Gasoline
evaporating from the tank also
produces hydrocarbons. Controlling
the production of NOx, CO, and HC
is important to the environment.
Under certain conditions of sunlight
and climate, NOx and HC react to
f orm photochemical ‘‘smog.’’ Carbon
monoxide does not contribute to
smog creation, but it is a poisonous
gas.
Your car has a Positive Crankcase
Ventilation System. This keeps
gasses that build up in the engine’s
crankcase from going into the
atmosphere. The Positive Crankcase
Ventilation valve routes them fromthe crankcase back to the intake
manif old. They are then drawn into
the engine and burned.
As gasoline evaporates in the f uel
tank, an evaporative emissions
control canister f illed with charcoal
adsorbs the vapor. It is stored in this
canister while the engine is of f . Af ter
the engine is started and warmed up,
the vapor is drawn into the engine
and burned during driving.
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 .
194
The Clean Air Act
Crankcase Emissions Control
System Evaporative Emissions Control
System
Onboard Ref ueling Vapor
Recovery
T echnical Inf ormation
Emissions Cont rols
298

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 ), dinitrogen
(N ), and water vapor.
This system constantly adjusts the
ignition timing, reducing the amount
of HC, CO and NOx produced.
The exhaust emissions controls
include three systems: PGM-FI,
Ignition Timing Control and Three
Way Catalytic Converter. These
three 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 from 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)
or the Powertrain Control Module
(PCM) uses various sensors to
determine how much air is going
into the engine. It then controls how
much f uel to inject under all operat-
ing conditions.
The emissions control systems are
covered by warranties separate f rom
the rest of your car. Read your
warranty manual f or more inf orma-
tion.
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
Genuine Honda replacement parts or
their equivalent f or repairs. Using
lower quality parts may increase the
emissions f rom your car.
2
2 Replacement Parts
Exhaust Emissions Controls
PGM-FI Syst em
Three Way Catalytic Converter
Ignit ion T iming Cont rol Syst em
Emissions Cont rols
T echnical Inf ormation
299

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.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.
Park your car away f rom high grass,
dry leaves, or other f lammables.
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 car’s three way catalytic
converter. Keep the engine tuned-up.
Have your car diagnosed and
repaired if it is misf iring, back-
f iring, stalling, or otherwise not
running properly.
(EX) (DX, LX)
T echnical Inf ormation
Three Way Catalytic Converter
300
TTHHRREEEEWWAAYYCCAATTAALLYYTTIICCCCOONNVVEERRTTEERRTTHHRREEEEWWAAYYCCAATTAALLYYTTIICCCCOONNVVEERRTTEERR

CONT INUED
If you take your vehicle f or a state
emissions test shortly af ter the
battery has been disconnected or
gone dead, it may not pass the test.
This is because of certain ‘‘readiness
codes’’ that must be set in the on-
board diagnostics f or the emissions
systems. These codes are erased
when the battery is disconnected,
and set again only after several days
of driving under a variety of
conditions.If the testing f acility determines that
the readiness codes are not set, you
will be requested to return at a later
date to complete the test. If you must
get the vehicle re-tested within the
next two or three days, you can
condition the vehicle for re-testing
by doing the f ollowing.
Make sure the gas tank is nearly,
but not completely, f ull (around
3/4).
Make sure the vehicle has been
parked with the engine of f f or 8
hours or more.
Make sure the ambient
temperature is between 20° and
95°F. Without touching the accelerator
pedal, start the engine and let it
idle f or 20 seconds.
Keep the vehicle in Park
(automatic transmission) or
Neutral (manual transmission).
Increase the engine speed to 2,000
rpm and hold it there until the
temperature gauge rises to at least
1/4of thescale(approximately3
minutes).
T echnical Inf ormation
T esting of Readiness Codes
St at e Emissions T est ing
301

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This manual describes the procedures involved in the
replacement of damaged body parts.
This manual covers maintenance and recommended
procedures f or repair to engine and chassis components.
It is written f or the Journeyman mechanic, but is simple
enough f or most mechanically-inclined owners to under-
stand.
This manual complements the Service Manual by
providing in-depth troubleshooting inf ormation f or each
electrical circuit in your vehicle.
Authorized Manuals
Service Manual:
Electrical T roubleshooting Manual:
Body Repair Manual:
310 NOTE: Dealers and Companies please provide dealer or company name,
and also the name of the person to whose attention the shipment should
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