1998 Oldsmobile 88 Service and Repair Manual

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Factory-Grade Data

1998 Oldsmobile 88 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

  • Royale LS Sedan 4-Door
  • Royale Sedan 4-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

1998 Oldsmobile 88 Recalls & Complaints

NHTSA #04V09000024/02/2004Component: FUEL SYSTEM, GASOLINE:DELIVERY

ON CERTAIN PASSENGER VEHICLES EQUIPPED WITH 3800 V6 (L36) ENGINES AND CERTAIN DELPHI FUEL PRESSURE REGULATORS, THE REGULATORS HAVE A MUCH HIGHER THAN USUAL RATE OF FUEL LEAKS. A LEAK CAN ALLOW FUEL T

Consequence

THE BACKFIRE CAN RUPTURE THE INTAKE MANIFOLD. THE RUPTURE OF THE INTAKE MANIFOLD CAN DISPLACE A FUE

Remedy

DEALERS WILL INSTALL NEW FUEL PRESSURE REGULATORS WITH IMPROVED DIAPHRAGMS. THE RECALL WILL BE CONDU

TSB #10170494

This informational bulletin provides information for dealers/technicians on Procedures to Unlock Delco Radio with Theftlock.

TSB #10248444

Vehicle Recalls

TSB #10137901

This informational bulletin provides the technician with information on what E85 fuel may due to a non E85 vehicle.

TSB #10246631

Expanded Availability for Remanufacture and Return (R&R) Electronic Control Modules

TSB #10017568

INTERMITTENT CHUGGLE OR FISHBITE ON LIGHT ACCELERATION OR A HIGHWAY SPEEDS WITH NO DIAGNOSTIC TROUBLE CODES (DTCS). *TT

TSB #10016464

WIRE HARNESS MAY BE STRETCHED, OR THE PCS MAY NOT BE ORIENTED IN THE SAME POSITION, AFTER INSTALLING A SERVICE REPLACEMENT VALVE BODY ASSEMBLY. GM TECH LINK. *TT

TSB #10012148

NEW REAR MAIN SEAL AND SPECIAL TOOL FOR INSTALLATION. *TT

TSB #10008471

NEW UPPER INTAKE MANIFOLD AND GASKET KITS. *TT

Showing the 8 most recent of 29 technical service bulletins on file with NHTSA.

20000802Component: STEERING:LINKAGES:TIE ROD ASSEMBLYCrash reported5 injured

WHILE DRIVING ABOUT 40-45 MPH RIGHT INNER TIE ROD BROKE, AND DRIVER LOST CONTROL OF VEHICLE. VEHICLE HIT AN EMBANKMENT, CRASHED INTO A CULVER, AND WENT ACROSS A DRIVEWAY BEFORE STOPPING. THERE WERE

20131113Component: STRUCTURE:BODYCrash reported1 injured

WAS DRIVING DOWN A TOLL ROAD, DEAR JUMPED IN FRONT OF CAR HIT THE DRIVER SIDE FRONT, CAR HIT MEDIAN, FLIPPED, AND ROLLED 3 TIMES. CAR IS TOTALED. AIR BAGS NEVER DEPLOYED. *TR

20131113Component: AIR BAGSCrash reported1 injured

WAS DRIVING DOWN A TOLL ROAD, DEAR JUMPED IN FRONT OF CAR HIT THE DRIVER SIDE FRONT, CAR HIT MEDIAN, FLIPPED, AND ROLLED 3 TIMES. CAR IS TOTALED. AIR BAGS NEVER DEPLOYED. *TR

20030422Component: SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITEDCrash reported

ANTI- LOCK BRAKING SYSTEM HAS FAILED 3 TIMES RESULTING IN ONE ACCIDENT. I HAD IT CHECKED OUT AND NOTHING CAN BE FOUND WITH WRONG WITH THE SYSTEM. *JB

20030422Component: SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITEDCrash reported

ANTI-LOCK BRAKING SYSTEM HAS FAILED 3 TIMES. 1ST TIME WAS 01-10-03. 2ND TIME WAS 04-11-03 AND 3RD TIME WAS 04-21-03. IST TIME RESULTED IN ACCIDENT AND LAST 2 TIMES I WAS ABLE TO GET OFF HIGHWAY BEF

Showing the 5 most serious of 213 complaints filed with NHTSA.

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