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1991 Buick Regal CAR/TRUCK REPAIR PROCEDURES AND DIAGRAMS - WHAT Buick 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 Buick Regal car and truck repair procedures including Buick 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 Buick Regal automobile. Try the Automotix DIY solution today!
    DIY REPAIR SAMPLES > CONTINUE EXPLORING >
    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 Buick 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 Buick Regal 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 Buick Regal AUTOMOBILES

    A/C & Cooling System Maintenance -> General Motors Corp. -> 1990-2002 Buick Regal, Chevrolet Lumina & Monte Carlo, Oldsmobile Cutlass Supreme & Intrigue & Pontiac Grand Prix & 1997-2002 Buick Century & 2000-02 Impala
    Vehicle: 1991 Buick Regal Limited 3.8 V6 GAS

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    CLICK HERE TO GET FULL ACCESS TO 1991 Buick Regal A/C & HEATER SERVICE PROCEDURES

    BRAKE SERVICE PROCEDURES FOR 1991 Buick Regal AUTOMOBILES

    HYDRAULIC BRAKE SYSTEM, GENERAL MOTORS -> WHEEL CYLINDER OVERHAUL
    Vehicle: 1991 Buick Regal Limited 3.1 V6 GAS

    • Raise and support vehicle.
    • Remove wheel, drum and brake shoes.
    • Disconnect hydraulic line at wheel cylinder.Do not pull metal line away from cylinder, as this may kink or bend line. Line will separate from cylinder when cylinder is moved away from brake backing plate.
    • Remove wheel cylinder-to-brake plate attaching screws, then the wheel cylinder.
    • Remove boots, pistons, springs and cups from cylinder,Fig. .
    • Clean all parts with brake fluid.
    • Inspect cylinder bore. A scored bore may be honed as long as the diameter is not increased by m...

    CLICK HERE TO GET FULL ACCESS TO 1991 Buick Regal BRAKE SERVICE PROCEDURES

    FUEL FILTER REPLACEMENT PROCEDURES FOR 1991 Buick Regal AUTOMOBILES

    General Motors Corp./Saturn Passenger Cars -> Fuel Pressure Relief -> Except Aveo, LaCrosse, LeMans (1988-93), Malibu & Malibu Maxx (2004-05), Metro, Nova, Prizm, Spectrum & Storm -> Engine Fuel Pressure Service Port -> Engines Less Fuel Pressure Service Port
    Vehicle: 1991 Buick Regal Custom 3.8 V6 GAS

    Do not smoke or allow an open flame of any type when working on or near any fuel system related components. The highly flammable vapor mixtures may ignite, resulting in serious personal injury.

    Prior to disconnecting fuel lines, the fuel system pressure must be relieved to prevent accidental spray of fuel.

    After the battery has been disconnected and reconnected, some abnormal driveability symptoms may occur. The vehicle may need to be driven while the vehicle relearns its adaptive strateg...

    CLICK HERE TO GET FULL ACCESS TO 1991 Buick Regal FUEL FILTER REPLACEMENT PROCEDURES

    DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES FOR 1991 Buick Regal AUTOMOBILES

    CV AXLE SHAFT, Replace
    Vehicle: 1991 Buick Regal Limited 3.8 V6 GAS

    • Raise and support vehicle, then remove tire and wheel assembly.
    • Remove brake caliper from steering knuckle and suspend caliper assembly.
    • Remove four bolts holding hub/bearing assembly to knuckle.
    • On vehicles equipped with Anti-Lock Brake System (ABS), remove ABS sensor mounting bolt, then position sensor aside to avoid damage.
    • On vehicles equipped with 125C and HM-282 transaxles and right shaft of vehicles with 440-T4 transaxles, separate drive axle from transaxle using axle shaft remover tool No....

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

    STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR 1991 Buick Regal AUTOMOBILES

    Starter, Replace
    Vehicle: 1991 Buick Regal Custom 3.8 V6 GAS

    • Disconnect battery ground cable.
    • Remove righthand cooling fan.
    • Remove drive belt.
    • Remove A/C compressor upper support brace. Move compressor to side.
    • Raise and support vehicle.
    • Disconnect engine oil cooler lines at flex connector.
    • Remove bolts from flywheel inspection cover and remove cover.
    • Remove starter mou...

    CLICK HERE TO GET FULL ACCESS TO 1991 Buick Regal STARTER & ALTERNATOR REPLACEMENT PROCEDURES

    MAINTENANCE LAMP RESET PROCEDURES FOR 1991 Buick Regal AUTOMOBILES

    General Motors Corp./Saturn Cars -> Reduce Engine Power Indicator Lamp ->
    Vehicle: 1991 Buick Regal Custom 3.8 V6 GAS

    The Reduce Engine Power indicator lamp should light for a approximately 3 seconds when the ignition is turned on as a bulb check. If the warning lamp turns on during vehicle operation, a vehicl...

    CLICK HERE TO GET FULL ACCESS TO 1991 Buick Regal MAINTENANCE LAMP RESET PROCEDURES

    RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 1991 Buick Regal AUTOMOBILES

    Coolant Hose, Replace -> Lower -> Upper
    Vehicle: 1991 Buick Regal Limited 3.8 V6 GAS

    Lower

    • Drain cooling system into a suitable container.
    • Reposition hose clamp from radiator using hose clamp pliers.
    • Remove radiator outlet hose from radiator.
    • Reposition hose clamp from water pump housing using hose clamp pliers.
    • Remove radiator outlet hose from water pump housing and from vehicle.
    • Reverse procedure to i...

    CLICK HERE TO GET FULL ACCESS TO 1991 Buick Regal RADIATOR & HOSE REPLACEMENT PROCEDURES

    SERPENTINE BELT SERVICE PROCEDURES FOR 1991 Buick Regal AUTOMOBILES

    Serpentine Drive Belt, Replace
    Vehicle: 1991 Buick Regal Custom 3.1 V6 GAS

    Care should be taken to avoid twisting or bending tensioner when applying torque. Damage to belt tensioner may occur.

    • Remove belt guard.
    • Rotate tensio...

    CLICK HERE TO GET FULL ACCESS TO 1991 Buick Regal SERPENTINE BELT SERVICE PROCEDURES

    COMPONENT LOCATION DIAGRAMS FOR 1991 Buick Regal AUTOMOBILES

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

    Top Rear Of Engine Diagram for 1991 Buick Regal Custom 3.8 V6 GASTop Rear Of Engine Diagram for 1991 Buick Regal Custom 3.8 V6 GAS

    Components on diagram:
  • Vapor Canister Purge Solenoid
  • Fuel Injector
  • Connector C-110
  • Splice S-122
  • Front Of Engine Compartment Diagram for 1991 Buick Regal Limited 3.1 V6 GASFront Of Engine Compartment Diagram for 1991 Buick Regal Limited 3.1 V6 GAS

    Components on diagram:
  • Primary Cooling Fan
  • Secondary Coolant Fan
  • Splice S-105
  • CLICK HERE TO GET FULL ACCESS TO 1991 Buick Regal PARTS/COMPONENTS LOCATION DIAGRAMS!

    WIRING DIAGRAMS FOR 1991 Buick Regal AUTOMOBILES

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

    1991 Buick Regal Limited 3.1 V6 GAS Wiring Diagram1991 Buick Regal Limited 3.1 V6 GAS Wiring Diagram

    Components on diagram:
  • Power Steering Pressure Switch
  • A/C Compressor Clutch
  • A/C Low Pressure Switch
  • A/C High Pressure Switch
  • A/C Compressor Relay
  • 1991 Buick Regal Limited 3.1 V6 GAS Wiring Diagram1991 Buick Regal Limited 3.1 V6 GAS Wiring Diagram

    Components on diagram:
  • Cigar Lighter
  • Trunk Light
  • I/P Compartment Light
  • RH Vanity Mirror Light
  • CLICK HERE TO GET FULL ACCESS TO 1991 Buick Regal WIRING DIAGRAMS!

    TECHNICAL SERVICE BULLETINS FOR 1991 Buick Regal AUTOMOBILES

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

    Document: Car and Truck Fix It Right the First Time Issues
    Vehicle: 1991 Buick Regal Limited 3.8 V6 GAS

    Auto Systems:
  • Labor Times, Manuals, Warranty, Aids
  • Document: GM TIRE WARRANTY PROGRAM CLAIMS GOODWILL GUIDELINES - REVISED
    Vehicle: 1991 Buick Regal Limited 3.8 V6 GAS

    Auto Systems:
  • Labor Times, Manuals, Warranty, Aids
  • Wheels, Tires, Wheel Bearings, Seals, Hubs
  • CLICK HERE TO GET FULL ACCESS TO 1991 Buick Regal TECHNICAL SERVICE BULLETINS!

    COMPONENT/PARTS SPECIFICATIONS FOR 1991 Buick Regal AUTOMOBILES

    BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most 1991 Buick Regal 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 Buick Regal 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 Buick Regal 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 Buick Regal 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 Buick Regal SPECIFICATIONS DATA!

    Shop online for auto body parts, engines, wheels, lights...

    Click here to view more details about 2004 Buick Regal Grille Assembly2004 Buick Regal Grille Assembly, With emblem provision and billet grille insert; A high quality, direct fit OE replacement complete grille and shell assembly; Backed by 1-year, unlimited-mileage warranty..

    Source: Auto Body Parts Store

    $52.80

    Click here to view more details about 2000 Buick Regal Headlight, Driver Side2000 Buick Regal Headlight, Driver Side, Bulbs included; Composite and combination type; DOT and SAE approved; A high quality, OE replacement headlight assembly; Backed by 1-year, unlimited-mileage warranty..

    Source: Auto Body Parts Store

    $63.02

    Click here to view more details2012 Buick Regal 19" X 8.5" Alloy Wheel, ALLOY WHEEL, 19 X 8.5, 5 STUDS/LUGS, 120MM BOLT DIA, 5 SPOKES, POLISHED SPOKES W/BLACK VENTS, , .

    Source: Wheels / Rims, Mirrors & Lights Store

    $381.84

    Click here to view more details1977 Buick Regal V8, 5.7 L, 350 CID Rebuilt Engine, Without smog., Warranty: 7-Year/70,000 Mile, .

    Source: Rebuilt Engines Store

    $1,690.00

    Click here to view more details2011 Buick Regal Used Rear Vent Window, Passenger Side, R., Very Good.

    Source: Used Auto Parts Store

    $133.00

    Click here to view more details1994 Buick Regal Used Wiper Motor Front, Very Good.

    Source: Used Auto Parts Store

    $66.00
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