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1991 Oldsmobile 98 CAR/TRUCK REPAIR PROCEDURES AND DIAGRAMS - WHAT Oldsmobile 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 Oldsmobile 98 car and truck repair procedures including Oldsmobile 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 Oldsmobile 98 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 Oldsmobile 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 Oldsmobile 98 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 Oldsmobile 98 AUTOMOBILES

    A/C & Cooling System Maintenance -> General Motors Corp. -> 1990-2002 Buick Electra, LeSabre & Park Avenue, Oldsmobile Eighty-Eight, LSS, Ninety-Eight & Regency & Pontiac Bonneville
    Vehicle: 1991 Oldsmobile 98 Regency Elite 3.8 V6 GAS

    [[table data]]

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    BRAKE SERVICE PROCEDURES FOR 1991 Oldsmobile 98 AUTOMOBILES

    POWER BRAKE UNITS, GENERAL MOTORS -> DELCO-MORAINE TANDEM DIAPHRAGM TYPE -> Assembly -> Brakes Grab -> DESCRIPTION -> Disassembly -> Hard Pedal -> OVERHAUL -> Slow Or No Release -> TROUBLESHOOTING
    Vehicle: 1991 Oldsmobile 98 Regency Elite 3.8 V6 GAS

    DESCRIPTION

    This unit utilizes a vacuum power chamber, consisting of a front and rear shell, housing divider, front and rear diaphragm, plate assemblies, hydraulic pushrod and a diaphragm return spring,Figs. and .

    The unit operates in much the same manner as the single diaphragm unit described previously. The diaphragm and plate assemblies utilize the pressure differential between the engine intake manifold vacuum and atmospheric pressure to assist in braking.

    TROUBLESHOOTING

    Hard Pedal
    • Internal vacuum leak.
    • Faulty control valve.
    Brakes Grab
    • Faulty control valve...

    CLICK HERE TO GET FULL ACCESS TO 1991 Oldsmobile 98 BRAKE SERVICE PROCEDURES

    FUEL FILTER REPLACEMENT PROCEDURES FOR 1991 Oldsmobile 98 AUTOMOBILES

    General Motors Corp./Saturn Passenger Cars -> Fuel Filter Replacement -> Except Aveo, Chevette 1.8L Diesel, Corvette, GTO, LaCrosse, Malibu (2004-06) & Malibu Maxx, Vibe, XLR, 2004-05 Corvette & 1998-2002 Metro & Prizm
    Vehicle: 1991 Oldsmobile 98 Regency Elite 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 v...

    CLICK HERE TO GET FULL ACCESS TO 1991 Oldsmobile 98 FUEL FILTER REPLACEMENT PROCEDURES

    DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES FOR 1991 Oldsmobile 98 AUTOMOBILES

    CV AXLE SHAFT, Replace
    Vehicle: 1991 Oldsmobile 98 Regency Touring 3.8 V6 GAS

    • Raise and support vehicle, then remove tire and wheel assembly.
    • Install a brass drift or a screwdriver to prevent rotor from turning.
    • Remove shaft nut and washer.
    • Remove brake caliper from steering knuckle and suspend caliper assembly.
    • Remove rotor from hub and bearing assembly, then stabilizer shaft or link from control arm.
    • Remove ball joint from steering knuckle.
    • Remove drive axle from transaxle using axle shaft remover tool No. J-33008, a...

    CLICK HERE TO GET FULL ACCESS TO 1991 Oldsmobile 98 DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES

    STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR 1991 Oldsmobile 98 AUTOMOBILES

    Alternator, Replace
    Vehicle: 1991 Oldsmobile 98 Regency Elite 3.8 V6 GAS

    • Disconnect battery ground cable.
    • Remove drive belt.
    • Remove engine cover.
    • Remove rear pencil brace bolts.
    • Remove brace.
    • Remove alternator mounting bolts.
    • Remove output terminal nut.
    • Disconnect electrical connector.
    • Remove alternat...

    CLICK HERE TO GET FULL ACCESS TO 1991 Oldsmobile 98 STARTER & ALTERNATOR REPLACEMENT PROCEDURES

    MAINTENANCE LAMP RESET PROCEDURES FOR 1991 Oldsmobile 98 AUTOMOBILES

    General Motors Corp./Saturn Cars -> Check Engine Or Service Now Soon Engine Indicator Lamps (Gasoline Engines w/Electronic Engine Controls Or EFI) -> Except LeMans, Metro, Prizm, Storm & Vibe
    Vehicle: 1991 Oldsmobile 98 Regency Touring 3.8 V6 GAS

    The Check Engine lamp should light when the ignition is turned On. When the engine is started, the lamp should go off. If the lamp remains on for 10 seconds or constantly after the engine is started, the self diagnosis system has detected a fault condition and has stored a code in the system Electronic Control Module (ECM) or Powertrain Control Module (PCM). After diagnosis and repair, the ECM memory can be cleared of codes as follows:

    On models except Cadillac with DEFI, remove the ECM/PCM fuse or disconnect the battery ground cable for approximately 30...

    CLICK HERE TO GET FULL ACCESS TO 1991 Oldsmobile 98 MAINTENANCE LAMP RESET PROCEDURES

    RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 1991 Oldsmobile 98 AUTOMOBILES

    Heater Hose, Replace -> Inlet -> Outlet
    Vehicle: 1991 Oldsmobile 98 Regency Elite 3.8 V6 GAS

    Inlet

    • Drain coolant into a suitable container.
    • Loosen hose clamp connecting hose to heater core inlet tube.
    • Loosen hose clamp connecting hose to intake manifold.
    • Remove hose from vehicle.
    • Reverse procedure to...

    CLICK HERE TO GET FULL ACCESS TO 1991 Oldsmobile 98 RADIATOR & HOSE REPLACEMENT PROCEDURES

    SERPENTINE BELT SERVICE PROCEDURES FOR 1991 Oldsmobile 98 AUTOMOBILES

    Serpentine Drive Belt, Replace
    Vehicle: 1991 Oldsmobile 98 Regency Elite 3.8 V6 GAS

    • Rotate tensioner counterclockwise, using a suitable tool to re...

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    COMPONENT LOCATION DIAGRAMS FOR 1991 Oldsmobile 98 AUTOMOBILES

    Component location diagrams for most 1991 Oldsmobile 98 cars and light trucks sold in the U.S. from 1990+.

    Lower Rear Of Engine Diagram for 1991 Oldsmobile 98 Regency Touring 3.8 V6 GASLower Rear Of Engine Diagram for 1991 Oldsmobile 98 Regency Touring 3.8 V6 GAS

    Components on diagram:
  • Oxygen Sensor
  • LH Rear Of Engine Diagram for 1991 Oldsmobile 98 Regency Elite 3.8 V6 GASLH Rear Of Engine Diagram for 1991 Oldsmobile 98 Regency Elite 3.8 V6 GAS

    Components on diagram:
  • Coolant Temperature Sender
  • Coolant Temperature Sensor
  • CLICK HERE TO GET FULL ACCESS TO 1991 Oldsmobile 98 PARTS/COMPONENTS LOCATION DIAGRAMS!

    WIRING DIAGRAMS FOR 1991 Oldsmobile 98 AUTOMOBILES

    OEM drawn wiring diagrams for most 1991 Oldsmobile 98 cars and light trucks sold in the U.S.

    1991 Oldsmobile 98 Regency Elite 3.8 V6 GAS Wiring Diagram1991 Oldsmobile 98 Regency Elite 3.8 V6 GAS Wiring Diagram

    Components on diagram:
  • Low Speed Coolant Fan Relay
  • A/C Pressure Fan Switch
  • High Speed Coolant Fan Relay
  • PCM
  • Coolant Temperature Sensor
  • 1991 Oldsmobile 98 Regency Touring 3.8 V6 GAS Wiring Diagram1991 Oldsmobile 98 Regency Touring 3.8 V6 GAS Wiring Diagram

    Components on diagram:
  • Washer Fluid Level Switch
  • Generator
  • Low Fuel Indicator
  • AMP Indicator
  • Multi-Function Chime Control Module
  • CLICK HERE TO GET FULL ACCESS TO 1991 Oldsmobile 98 WIRING DIAGRAMS!

    TECHNICAL SERVICE BULLETINS FOR 1991 Oldsmobile 98 AUTOMOBILES

    OEM TSB listings for most 1991 Oldsmobile 98 cars and light trucks sold in the U.S. from 1985+.

    Document: Car and Truck Fix It Right the First Time Issues
    Vehicle: 1991 Oldsmobile 98 Regency Touring 3.8 V6 GAS

    Auto Systems:
  • Labor Times, Manuals, Warranty, Aids
  • Document: GM TIRE WARRANTY PROGRAM CLAIMS GOODWILL GUIDELINES - REVISED
    Vehicle: 1991 Oldsmobile 98 Regency Touring 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 Oldsmobile 98 TECHNICAL SERVICE BULLETINS!

    COMPONENT/PARTS SPECIFICATIONS FOR 1991 Oldsmobile 98 AUTOMOBILES

    BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most 1991 Oldsmobile 98 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 Oldsmobile 98 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 Oldsmobile 98 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 Oldsmobile 98 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 Oldsmobile 98 SPECIFICATIONS DATA!

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

    Click here to view more details about 1991 Oldsmobile 98 Alternator1991 Oldsmobile 98 Alternator, 105 amps output, 12 V, internally regulated, clockwise rotation, 11 o'clock position, 1255 pulley; Replaces OE Delco unit; No core required; A high quality, direct fit OE replacement alternator; May not include pulley..

    Source: Auto Body Parts Store

    $82.46

    Click here to view more details about 1993 Oldsmobile 98 Oxygen Sensor, Passenger Side1993 Oldsmobile 98 Oxygen Sensor, Passenger Side, A high quality, direct fit OE replacement oxygen sensor; Improves car's engine response and gas mileage; Effectively lowers emissions upon replacing its tired old oxygen sensor; Exceeds OE specifications and test requirements; OE part number 25166816..

    Source: Auto Body Parts Store

    $21.00

    Click here to view more details about 1997 Oldsmobile Supreme Sedan Door Mirror Passenger Side1997 Oldsmobile Supreme Sedan Door Mirror Passenger Side, Passenger Side Power Door Mirror; Paint To Match, , .

    Source: Wheels / Rims, Mirrors & Lights Store

    $116.50

    Click here to view more details1993 Oldsmobile 98 Regency Touring V6, 3.8 L, 231 CID Rebuilt Engine, Warranty: 3-Year/100,000 Mile, .

    Source: Rebuilt Engines Store

    $1,969.00

    Click here to view more details1987 Oldsmobile 98 Used Wiper Motor Front, Very Good.

    Source: Used Auto Parts Store

    $70.00

    Click here to view more details1996 Oldsmobile 98 Used A/C Compressor, 3.8, AUTO, FWD, Very Good.

    Source: Used Auto Parts Store

    $132.00
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