1987 Oldsmobile 98 Service and Repair Manual

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Factory-Grade Data

1987 Oldsmobile 98 service and repair manual — a detailed, factory-style reference for maintenance, diagnostics, and repair. Use it to confirm correct procedures, specifications, and system coverage before you start work.

Built for technicians and DIY owners, this manual helps you troubleshoot accurately, follow step-by-step repair procedures, and use wiring diagrams and system sections to diagnose problems faster.

What’s included

  • Step-by-step repair procedures and service information
  • Specifications and reference data (where provided)
  • Electrical coverage with wiring diagrams
  • Coverage across key systems: engine, transmission, brakes, steering, suspension, HVAC, and more

Trims covered

  • Regency Brougham Sedan 4-Door
  • Regency Sedan 4-Door
  • Regency Brougham Sedan 2-Door
  • Regency Touring Sedan 4-Door
  • Regency Grande Sedan 2-Door

Engines covered

  • 3.8L 3800CC 231Cu. In. V6 GAS OHV Naturally Aspirated

Index / Table of contents

  • Body
  • Brakes
  • Chassis Electrical
  • Driveline
  • Engine Cooling
  • Engine Electrical
  • Engine Mechanical
  • Engine Performance & Emission Controls
  • Fuel System
  • General Information & Identification
  • Heating, Ventilation, & Air Conditioning
  • Hybrid & Electric Vehicle Systems
  • Steering
  • Suspension
  • Transmission, Clutch, & Transfer Case
  • Wiring Diagrams

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Vehicle Safety Data

1987 Oldsmobile 98 Recalls & Complaints

NHTSA #88V08000016/05/1988Component: VEHICLE SPEED CONTROL:ACCELERATOR PEDAL

EXCESSIVE ACCELERATOR CABLE FRICTION MAY RESTRICT THE CABLES FREE MOVEMENT BETWEEN THE ACCELERATOR PEDAL AND THE THROTTLE BODY.

Consequence

THIS COULD PREVENT THROTTLE FROM RETURNING TO CLOSED(IDLE) POSITION WHEN ACCELERATOR PEDAL IS RELEAS

Remedy

REPLACE ACCELERATOR CABLE.

NHTSA #87V13500001/09/1987Component: ELECTRICAL SYSTEM:WIRING:FUSES AND CIRCUIT BREAKERS

AN IN LINE FUSIBLE LINK MAY MELT DOWN AND CAUSE A FIRE.

Consequence

THE IN LINE FUSIBLE LINK LOCATED IN THE AREA OF THEPLASTIC WINDSHIELD WASHER BOTTLE BRACKET MAY, UND

Remedy

THE WINDSHIELD WASHER BOTTLE BRACKET WILL BE REPLACED.

No service bulletins No technical service bulletins on file with NHTSA for the 1987 Oldsmobile 98.
19990216Component: VEHICLE SPEED CONTROLCrash reported

WHILE COMING OUT OF A PARKING STOP THROTTLE GOT STUCK, RESULTING IN SUDDEN ACCELERATION, WHICH CAUSED VEHICLE TO GO DOWN AN EMBANKMENT. CAUSE UNKNOWN. PLEASE PROVIDE FURTHER INFORMATION. *AK

20030324Component: ENGINE AND ENGINE COOLING

NAR 03-25-2003. *MR. SEVERAL PARTS ON THE VEHICLE FAILED SUCH AS 2 EGR VALVES, IDLE PASSAGE SWITCH, POWER ANTENNA, TRANSMISSION GASKET, CV BOOT, AUTOMATIC AIR CONDITION CONTROL UNIT, RADIO SPEAKERS,

20030324Component: STEERING:LINKAGES:TIE ROD ASSEMBLY

NAR 03-25-2003. *MR. SEVERAL PARTS ON THE VEHICLE FAILED SUCH AS 2 EGR VALVES, IDLE PASSAGE SWITCH, POWER ANTENNA, TRANSMISSION GASKET, CV BOOT, AUTOMATIC AIR CONDITION CONTROL UNIT, RADIO SPEAKERS,

20030324Component: EQUIPMENT

NAR 03-25-2003. *MR. SEVERAL PARTS ON THE VEHICLE FAILED SUCH AS 2 EGR VALVES, IDLE PASSAGE SWITCH, POWER ANTENNA, TRANSMISSION GASKET, CV BOOT, AUTOMATIC AIR CONDITION CONTROL UNIT, RADIO SPEAKERS,

20030324Component: VEHICLE SPEED CONTROL:CRUISE CONTROL

NAR 03-25-2003. *MR. SEVERAL PARTS ON THE VEHICLE FAILED SUCH AS 2 EGR VALVES, IDLE PASSAGE SWITCH, POWER ANTENNA, TRANSMISSION GASKET, CV BOOT, AUTOMATIC AIR CONDITION CONTROL UNIT, RADIO SPEAKERS,

Showing the 5 most serious of 25 complaints filed with NHTSA.

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