1991 HONDA CIVIC engine

If towing is necessary, contact a professional towing service. Your
authorized Honda dealer can assist you with detailed towing

instructions.

Never use tow chains or rope to tow a car; your ability to safely
control the car may be adversely affected.
We recommend the following: Flat Bed Equipment —Entire car is winched on a flat bed vehicle.
This is the best way of transporting your Honda.
Wheel Lift Type—Tow with the front wheels off the ground.

If the car can only be towed with the front wheels on the ground:

make sure the transmission is full of fluid (see pages 78 — 79) and
tow with the transmission in neutral (N) and the ignition key in the 1
position.

CAUTION:

To avoid serious damage on automatic transmission cars, first
start the engine and shift to D4, then to N and shut the engine off. If the engine does not run or the transmission cannot be shifted
while the engine is running, the car must be transported on flat
bed equipment.
Check local regulations for towing.

CAUTION:
Do not exceed 35 mph (55 km/h) or tow for distances of more
than 50 miles (80 km).
If a sling type tow is used, the tow truck driver should position
wood spacer blocks between your car's frame and the chains
and lift straps to avoid damaging the bumper and the body. Do not use the bumpers to lift the car or to support the car's
weight while towing. TowingProCarManuals.comMain Menu s t

If Your Car Gets Stuck
If your car gets stuck in sand, mud, or snow, call a professional
towing service for assistance in getting your car out.
CAUTION: Do not rev up the engine and allow the wheels to spin freely at
high speed. Severe transmission damage may result if the wheels are allowed to spin for more than a few seconds.DO NOT try to free a car with automatic transmission from
snow, etc. by rocking the car alternately between forward and
reverse gears. Severe transmission damage may result from
shifting into gear with the wheels moving.ProCarManuals.comMain Menu s t

Specifications(Hatchback)*1 Excluding the coolant in the reserve tank and that remaining in the en\
gine:

0.4 (0.11 US gal, 0.09 Imp gal)

*
2
Excluding the oil remaining in the engine but including that remaining \
in the oil filter.
(cont'd)
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Specifications (Sedan)
*
1
Excluding the coolant in the reserve tank and that remaining in the eng\
ine:

0.4 (0.11 US gal, 0.09 Imp gal)

*
2
Excluding the oil remaining in the engine but including that remaining \
in the oil filter.
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Identification Numbers

The Vehicle Identification Number(V.I.N.) is stamped on a plate at-
tached to
the top left side of the
dashboard.
It also appears on the Certification
label attached to the door jamb, as
well as under the hood on the body,
directly behind the engine.

NOTE:

The V.I.N. is also provided in bar code on the Certification label.

Hatchback Sedan
CERTIFICATION LABEL

AUTOMATIC
TRANSMISSION
NUMBER
CERTIFICATION
LABEL

MANUAL
TRANSMISSION NUMBER
ENGINE NUMBER

The Engine Number is stamped on the right front side of the engine
block.

The Transmission Number appears on a label on the top edge of the
transmission where it attaches to the engine.

NOTE:

Do not mistake the transmission number for the engine number.
VEHICLE

IDENTIFICATION

NUMBER
VEHICLE IDENTIFICATION
NUMBERProCarManuals.comMain Menu s t

Evaporative Emission Control System
The Evaporative Emission Control System is designed to prevent
fuel vapors from escaping into the atmosphere. Fuel vapors from the fuel tank are directed into the charcoal
canister where they are adsorbed and stored while the engine is stopped or idling. When the coolant temperature rises to a certain
value, the vapors are drawn into the engine through the throttlebody and the intake manifold during normal engine operation.
Engine Exhaust Emission 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.
HONDA PGM-FI System
The PGM-FI system consists of three independent sub-systems; Air Intake, Electronic Control and Fuel Control, thus allowing moreaccurate 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.
Catalytic Converter
Three Way Catalyst
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 (N 2
) and water vapor.

Exhaust Gas Recirculation (EGR) (California automatic models except EX Sedan)
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.ProCarManuals.comMain Menu s t

Catalytic Converter

A catalytic converter is installed in the exhaust system to help
clean-up the harmful exhaust gases that can cause air pollution.
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 54.

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 110.
— Don'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 CHARGE warning light comes on; have it checked by your
Honda dealer.
CATALYTIC CONVERTERProCarManuals.comMain Menu s t

Index

Battery
Charging System Warning Light.............................................. 30
Jump Starting ........................ 110
Maintenance............................. 89
Specification (Hatchback).... 116
Specification (Sedan)............ 119
Beeper System Fasten Seat Belt Beeper(Sedan).................................. 11

(Hatcback)............................ 15

Belts, Seat............. See "Seat Belts"
Body Repair.................................. 102
Brake Warning Light...................... 31 Brakes
Brake Failure Warning Light.... 31

Brake Fluid................................ 84

Brake System Design.............. 83
Brake Wear Indicators............. 84
Parking Brake........................... 42
Parking Brake Warning Light.. 31
Break-in Period................................. 2

Bulb
Replacement............................
92

Specification (Hatchback)....
117
Specification (Sedan)............

120
Buzzer........... See
"Beeper System"
Capacities (Hatchback)............... 115 Capacities (Sedan)....................... 118
Care and Cleaning.......................... 99
Catalytic Converter..................... 126 Certification Label....................... 121
Chains, Tires...................................

95
Check Engine
Warning Light......... 31
Child Proof Door Locks...................

5

Child Restraint
System................. 21
Cigarette Lighter............................ 44

Clock............................................... 42
Clutch Pedal Adjustment.............. 61
Compact Spare Tire.................... 104
Coolant Temperature Gauge ........

28
Cooling (with
A/C).........................

49

Cooling System..............................

80

Crankcase Emission Control
System................................... 124
Cruise Control Operation.................................. 39
Indicator.................................... 31

Defogger........................................ 34
Defroster........................................ 51

Doors
Child Proof Door Locks............. 5

Locks........................................... 3

Power Locks.............................. 4

Emergency
Changing a Flat Tire............... 105
Hazard Warning System ......... 37If Your Car Gets Stuck.......... 112
Jump Starting........................ 110

Shoulder Belt Buckle............. 113

Towing.................................... 111
Warning and Indicator Lights.. 29
Emission Controls........................ 124

Engine
Coolant...................................... 80

Coolant Temperature Gauge... 28
Exhaust Controls................... 125Identification Number............ 12

1
Oil and
Filter.............................. 76
OH Pressure Warning Light..... 30
Specification (Hatchback).... 116
Air Conditioner
Operation.................................. 47

Service...................................... 98

Air Filter.......................................... 86

Air Pressure, Tires......................... 94
Antifreeze.. See "Radiator Coolant" Anti-theft Steering Column Lock System ..................................... 57
Appearance Care........................ 100

Ashtrays......................................... 44

Automatic Seat Belt...................... 10

Automatic Transmission
Driving Technique.................... 66

Fluid........................................... 79

Operation.................................. 64

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