1995 Oldsmobile 98 Service and Repair Manual

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Factory-Grade Data

1995 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 Elite Sedan 4-Door

Engines covered

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

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

1995 Oldsmobile 98 Recalls & Complaints

NHTSA #94V19000004/10/1994Component: EXTERIOR LIGHTING:HEADLIGHTS

THESE VEHICLES WERE ASSEMBLED WITH LIGHTING CONTROL MODULES WHICH CAN EXPERIENCE EXCESSIVE CURRENT LEAKAGE DUE TO DAMAGED SURFACE MOUNTING CAPACITORS. THIS CAN CAUSE LOSS OF HEAD LAMPS AND PARKING LAM

Consequence

SUDDEN LOSS OF HEADLAMPS CAN CAUSE REDUCED DRIVER VISIBILITY WHICH CAN RESULT IN A VEHICLE ACCIDENT.

Remedy

DEALERS WILL REPLACE THE HEADLAMP MODULE.

NHTSA #94V13800002/08/1994Component: EXTERIOR LIGHTING:HEADLIGHTS:SWITCH

A SPRING IN THE HEAD LAMP PORTION OF THE HEAD PARK LAMP SWITCH CAN FAIL PREVENTING LATCHING OF THE HEAD LAMP PORTION OF THE SWITCH IN THE "ON" POSITION.

Consequence

THE HEAD LAMPS WOULD NOT STAY ILLUMINATED RESULTING IN REDUCED DRIVER VISIBILITY.

Remedy

DEALERS WILL INSPECT HEAD/PARK LAMP SWITCH BUILD DATE CODES AND REPLACE SWITCHES WITH SUSPECT DATE C

TSB #10170494

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

TSB #10138060

This warranty administration bulletin provides policy information with the field action courtesy transportation policy.

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 #10012148

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

TSB #10008471

NEW UPPER INTAKE MANIFOLD AND GASKET KITS. *TT

TSB #634813

SOME OWNERS MAY COMMENT ON A REPEAT ENGINE OIL PAN LEAK. *TT

TSB #620835

EXPERIENCING EXCESSIVE ENGINE COOLANT CONSUMPTION, OR AN ENGINE COOLANT LEAK NEAR OR UNDER THE THROTTLE BODY AREA OF THE UPPER INTAKE MANIFOLD. *TT

Showing the 8 most recent of 41 technical service bulletins on file with NHTSA.

20010911Component: AIR BAGSCrash reported1 injured

THE DRIVER'S AIR BAG IS MUCH BIGGER THAN THE STEERING WHEEL, DURING AN ACCIDENT IT VIOLENTLY DEPLOYED AND BLEW THE CONSUMERS HAND OFF THE WHEEL WITH SUCH FORCE THAT IT BROKE HER WRIST (RIGHT) AND RESU

20000228Component: VEHICLE SPEED CONTROLCrash reported

THE VEHICLE'S ACCELERATOR MALFUNCTIONED CAUSED DAMAGE TO DRIVER'S PROPERTY. YH

20080122Component: FUEL SYSTEM, GASOLINEFire reported

TL*THE CONTACT OWNS A 1995 OLDSMOBILE 98. WHILE DRIVING 65 MPH, SPARKS APPEARED IN THE ENGINE COMPARTMENT AND THE ENGINE SHUT OFF. THERE WERE NO WARNING INDICATORS PRIOR TO THE FAILURE. THE CONTACT

20070724Component: AIR BAGS:FRONTAL1 injured

TL*THE CONTACT OWNS A 1995 OLDSMOBILE 98 ROYAL. WHILE DRIVING 45 MPH, THE DRIVER SIDE AIR BAG SUDDENLY DEPLOYED WITHOUT WARNING. THE CONTACT HAD TO HOLD THE AIR BAG DOWN AND PULL OVER TO THE SIDE OF

20040503Component: AIR BAGS1 injured

AIRBAGS DEPLOYED WITHOUT REASON UNDER NORMAL DRIVING CONDITIONS CAUSING WINDSHIELD TO BREAK AND DUE TO COST TO REPAIR DASH AND AIRBAGS CAUSED CAR TO BE A TOTAL LOSS. *AK

Showing the 5 most serious of 71 complaints filed with NHTSA.

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