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1991 Honda Civic CAR/TRUCK REPAIR PROCEDURES AND DIAGRAMS - WHAT Honda REPAIR SHOPS DON'T WANT YOU TO KNOW

Learn how to repair a car or truck, install or remove parts, wire an engine, reset warning lights, replace fuel filter, fix auto body and more. Get Automotix DIY!

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    Get Full Access Automotix DIY provides automotive consumers and do it yourselfers; the most comprehensive repair information about 1991 Honda Civic car and truck repair procedures including Honda engine diagrams, wiring diagrams, repair work estimating measures, technical service bulletins, auto body work guidance, starter & alternator replacement procedures, serpentine belt replacement procedures, radiator & hose replacement procedures, tune-up & drivability specifications, quick lube illustrations, preventive maintenance guide, engine light reset instructions, parts removal and install procedures, fuel filter replacement directions, component location diagrams, air filter locations & replacement instructions, a/c system specifications, and general auto service procedures. You don't have to be a car mechanic or technician to know how to fix your Honda Civic automobile. Try the Automotix DIY solution today!
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    Using the Automotix DIY repair procedures will save you hundreds and even thousands of dollars! In addition, it will save you hours of touring the city searching for Honda mechanics you can trust. The Automotix DIY solution is particularly affordable. A full access to the entire DIY repair procedures and diagrams for your 1991 Honda Civic vehicle will cost less than a single gallon of gas. Here are some of the DIY repair tips and procedures you will find here:

    A/C & HEATER SERVICE PROCEDURES FOR 1991 Honda Civic AUTOMOBILES

    Air Bag System Precautions -> Honda -> Disarming -> Except Passport -> Passport
    Vehicle: 1991 Honda Civic LX 1.5 L4 GAS

    Except Passport

    The Supplemental Restraint System (SRS) must be disarmed prior to disconnecting any electrical connectors or servicing any system components or items located near SRS electrical connectors. SRS electrical wiring can be identified by its yellow outer protective coating.

    • Obtain radio theft protection code number.
    • Disconnect battery ground cable, then positive cable.
    • Wait at least three minutes with ignition turned Off before disconnecting any SRS electrical connectors. This will allow air bag system back-up circuit capacitor to discharge.
    • ...

    CLICK HERE TO GET FULL ACCESS TO 1991 Honda Civic A/C & HEATER SERVICE PROCEDURES

    BRAKE SERVICE PROCEDURES FOR 1991 Honda Civic AUTOMOBILES

    HONDA, ANTI-LOCK BRAKES -> SYSTEM COMPONENTS -> ACCUMULATOR -> CONTROL UNIT -> MASTER CYLINDER -> MODULATOR UNIT -> POWER UNIT -> PRESSURE SWITCH -> SPEED SENSOR
    Vehicle: 1991 Honda Civic SI 1.6 L4 GAS

    MASTER CYLINDER

    A tandem master cylinder is used in order to improve safety of the braking system. In addition, a center valve method is introduced to match the anti-lock brake operation.

    SPEED SENSOR

    The speed sensor is the contactless type that detects the rotating speeds of a wheel. It is composed of a permanent magnet and coil. When the gear pulsers at each wheel turn, the magnetic coil in the speed sensor alternates, generating voltages with frequency in proportion to wheel rotating speed.

    CONTROL UNIT

    The main function section of the control unit performs calculations on the ...

    CLICK HERE TO GET FULL ACCESS TO 1991 Honda Civic BRAKE SERVICE PROCEDURES

    FUEL FILTER REPLACEMENT PROCEDURES FOR 1991 Honda Civic AUTOMOBILES

    Honda -> Fuel Filter Replacement -> del Sol, 1985-91 CR-X, 1985-01 Prelude, 1985-97 Accord, 1987-00 Civic, 1997-01 CR-V & 1995-97 Odyssey w/Fuel Injected Engines -> Fuel System Pressure Relief -> Removal & Installation
    Vehicle: 1991 Honda Civic 4WD 1.6 L4 GAS

    Fuel System Pressure Relief

    • Obtain the vehicle owners radio theft protection code prior to disconnecting the battery ground cable, if equipped.
    • Disconnect the battery ground cable.
    • Remove the fuel fill cap to release fuel tank pressure.
    • On models less fuel filter service bolt, place a shop towel over the banjo bolt at top of fuel filter. Slowly loosen the banjo bolt one complete turn. When loosening the banjo bolt, use a backup wrench to hold the fuel filter in position.
    • On m...

    CLICK HERE TO GET FULL ACCESS TO 1991 Honda Civic FUEL FILTER REPLACEMENT PROCEDURES

    DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES FOR 1991 Honda Civic AUTOMOBILES

    CV AXLE SHAFT, Replace
    Vehicle: 1991 Honda Civic DX 1.5 L4 GAS

    Replacement procedures for left and right driveshafts are the same.

    • Raise and support front of vehicle, then remove front wheels.
    • Drain transaxle.
    • Raise locking tab on spindle nut, then remove nut.
    • Remove self-locking nut and self-locking bolt. Replace self-locking bolt if you can easily thread a non-self-locking nut past their nylon locking inserts.
    • Remove damper fork, then cotter pin from lower arm ball joint castle nut and remove nut.
    • Install hex nut on ball joint. Ensure nut is flush with ball joint pin end, or threaded section of ball joint pin might be damaged by ball joi...

    CLICK HERE TO GET FULL ACCESS TO 1991 Honda Civic DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES

    STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR 1991 Honda Civic AUTOMOBILES

    Starter, Replace
    Vehicle: 1991 Honda Civic EX 1.6 L4 GAS

    • Disconnect battery ground cable, then wait at least three minutes before continuing procedure.
    • Disconnect positive battery cable.
    • Remove engine wire harness.
    • Disconnect all electrical leads at starter.
    • Loosen...

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    MAINTENANCE LAMP RESET PROCEDURES FOR 1991 Honda Civic AUTOMOBILES

    Honda -> Check Engine Lamp -> 1990-95 Civic
    Vehicle: 1991 Honda Civic DX 1.5 L4 GAS

    The vehicle's radio may have a coded theft protection circuit. The code number should be verified prior to disconnecting the battery ground cable.

    The Check Engine/PGM-FI warning lamp should be illuminated for approximately 2 seconds after the ignition switch is placed in the On position as a bulb check. After approximately 2 seconds, the lamp should go out. If the lamp remain...

    CLICK HERE TO GET FULL ACCESS TO 1991 Honda Civic MAINTENANCE LAMP RESET PROCEDURES

    RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 1991 Honda Civic AUTOMOBILES

    Radiator, Replace
    Vehicle: 1991 Honda Civic EX 1.6 L4 GAS

    • Drain engine coolant into a suitable container.
    • Remove front engine compartment cover.
    • Remove upper and lower radiator hoses, and ATF cooler hoses.
    • Disconnect fan motor connectors.
    • Remove engine compartment cover brackets and radiator upper brackets, then ...

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    SERPENTINE BELT SERVICE PROCEDURES FOR 1991 Honda Civic AUTOMOBILES

    Serpentine Drive Belt, Replace -> Air Conditioning and Power Steering -> Alternator
    Vehicle: 1991 Honda Civic 1.5 L4 GAS

    Alternator

    • Disconnect battery ground cable from battery.
    • Loosen upper mounting adjustment bolt.
    • Loosen lower mounting through bolt.
    • Remove alternator drive belt.
    • Clean and inspect belt surfaces of all pulleys.
    • Reverse procedure to install, noting the following:
      • Torque lower alternator mounting bolt to...

    CLICK HERE TO GET FULL ACCESS TO 1991 Honda Civic SERPENTINE BELT SERVICE PROCEDURES

    COMPONENT LOCATION DIAGRAMS FOR 1991 Honda Civic AUTOMOBILES

    Component location diagrams for most 1991 Honda Civic cars and light trucks sold in the U.S. from 1990+.

    Fuel & Emission System Components Diagram for 1991 Honda Civic EX 1.6 L4 GASFuel & Emission System Components Diagram for 1991 Honda Civic EX 1.6 L4 GAS

    Components on diagram:
  • Fast Idle Control Solenoid Valve
  • Purge Cut-Off Solenoid Valve
  • Coolant Temperature (TW) Sensor
  • Atmospheric Pressure (PA) Sensor
  • Electronic Control Unit (ECU)
  • A/C & Roof Wiring Harness Diagram for 1991 Honda Civic  1.5 L4 GASA/C & Roof Wiring Harness Diagram for 1991 Honda Civic 1.5 L4 GAS

    Components on diagram:
  • Connector C-471
  • Connector C-482
  • Connector C-483
  • Connector C-290
  • Connector C-291
  • CLICK HERE TO GET FULL ACCESS TO 1991 Honda Civic PARTS/COMPONENTS LOCATION DIAGRAMS!

    WIRING DIAGRAMS FOR 1991 Honda Civic AUTOMOBILES

    OEM drawn wiring diagrams for most 1991 Honda Civic cars and light trucks sold in the U.S.

    1991 Honda Civic 4WD 1.6 L4 GAS Wiring Diagram1991 Honda Civic 4WD 1.6 L4 GAS Wiring Diagram

    Components on diagram:
  • Fuel Pump
  • Driver Seat Belt Retractor
  • Automatic Shoulder Seat Belt Control Unit
  • 1991 Honda Civic  1.5 L4 GAS Wiring Diagram1991 Honda Civic 1.5 L4 GAS Wiring Diagram

    Components on diagram:
  • Throttle Angle Sensor
  • MAP Sensor
  • Injector 1
  • Injector 3
  • Ignition Timing Adjustment Connector
  • CLICK HERE TO GET FULL ACCESS TO 1991 Honda Civic WIRING DIAGRAMS!

    TECHNICAL SERVICE BULLETINS FOR 1991 Honda Civic AUTOMOBILES

    OEM TSB listings for most 1991 Honda Civic cars and light trucks sold in the U.S. from 1985+.

    Document: ATEQ VT55 TPMS Update Information
    Vehicle: 1991 Honda Civic 1.5 L4 GAS

    Auto Systems:
  • Labor Times, Manuals, Warranty, Aids
  • Document: ED-18 Battery Analyzer Update Information
    Vehicle: 1991 Honda Civic 1.5 L4 GAS

    Auto Systems:
  • Tools, Equipment
  • CLICK HERE TO GET FULL ACCESS TO 1991 Honda Civic TECHNICAL SERVICE BULLETINS!

    COMPONENT/PARTS SPECIFICATIONS FOR 1991 Honda Civic AUTOMOBILES

    BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most 1991 Honda Civic cars and light trucks sold in the U.S. and Canada from 1970+.

    • Brake caliper mounting bolt torque
    • Brake drum runout, machining, & discard specs
    • Minimum brake lining thickness.
    • Brake rotor runout, parallelism, machining, discard, & finish specs

    A/C SYSTEM SPECIFICATIONS: Air conditioning refrigerant capacity and type as well as lubricant capacity for most 1991 Honda Civic cars and light trucks sold in the U.S. and Canada from 1980+.

    • Refrigerant capacity & type, compressor oil viscosity, total system oil capacity & compressor clutch gap

    COOLING SYSTEM BLEED: Cooling system bleeder valve identification, bleeder type and bleed procedures for most domestic and imported cars and light trucks sold in the U.S. and Canada from 1986+.

    PREVENTIVE MAINTENANCE: Preventive maintenance recommendations and required services for most domestic and imported cars and light trucks sold in the U.S. and Canada from 1980+. Includes severe and routine service schedules

    QUICK-LUBE and ILLUSTRATIONS: Fluid recommendations, capacities, drain plug torques, tire data, and severe service recommended preventive maintenance schedules. Information covers most 1991 Honda Civic cars and light trucks sold in the U.S. and Canada from 1980+. Engine and chassis service images.

    • Automatic transmission/transaxles capacities, lubricant recommendations
    • Differential/final drive capacities, lube recommendations, grades, & viscosities
    • Final drive fill & drain plug torques
    • Number of lubrication fittings & plugs
    • Power steering, brake, & clutch fluid recommendations
    • Manual transmission/transaxle capacities, lube recommendations, grades, & viscosities
    • Number of lubrication fittings & plugs
    • Power steering, brake, & clutch fluid recommendations
    • Engine oil capacities, API grade recommendations, SAE viscosity recommendations, drain plug torque
    • Severe service maintenance & interval recommendations
    • Tire sizes, wheel nut/bolt torque, pressures & rim sizes
    • Transfer case capacities, lube recommendations, grades, & viscosities

    TUNE-UP & DRIVEABILITY SPECIFICATIONS: Most tune-up specifications for most 1991 Honda Civic cars and light trucks sold in the U.S. and Canada from 1980+

    • Airflow sensor electrical specifications
    • Tensioning specifications for systems with automatic tensioners
    • Barometric pressure sensor specs
    • Battery group number and cranking performance
    • Crankshaft & camshaft position sensor resistance
    • Engine compression pressures
    • Coolant temperature sensor specs
    • Computer advance.
    • Diesel fuel temperature sensor resistance.
    • Distributor advance specifications
    • Ignition pickup coil resistance
    • Exhaust gas recirculation temperature sensor resistance
    • Engine fastener torque values
    • Firing order diagrams
    • Fuel system pressures
    • Generator (alternator) specs
    • Intake air temperature sensor specs
    • Ignition coil specifications
    • Fuel injector resistance
    • Engine idle speeds
    • Knock sensor resistance
    • Manifold absolute pressure sensor specs
    • Mixture control solenoid resistance
    • Voltage regulator specs
    • Spark plug applications & gaps
    • Starter motor electrical specs.
    • Tensioning specifications for systems without automatic tensioners
    • Throttle body temperature sensor resistance
    • Ignition timing in degrees at rpm
    • Transmission oil temperature sensor resistance
    • Throttle position sensor specs
    • Vacuum sensor valve specs

    CLICK HERE TO GET FULL ACCESS TO 1991 Honda Civic SPECIFICATIONS DATA!

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