1984 Buick Century Service and Repair Manual

4.7 · Trusted by 14,000+ mechanics & DIYers
Regular price $29.99 USD
  • Lightning-Fast Downloads
    Optimized files — even slow connections handle it
  • Instant Search & Navigation
    Jump to any procedure or spec with one click
  • Print One or All Pages
    Bring only the pages you need to the shop
  • Covers Every System & Component
    Every procedure for the 1984 Buick Century
Sample Preview

Unlock the Full Manual

Complete repair procedures
Wiring diagrams & schematics
Torque specifications
Full search & bookmarks
$29.99
Buy 2+ Manuals, Save 20% Discount applied automatically at checkout
20% OFF
Secure Checkout
No Subscriptions
Factory-Grade Data

1984 Buick Century 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

  • Estate Wagon 4-Door
  • Olympia Limited Sedan 4-Door
  • Base Sedan 4-Door
  • Custom Wagon 4-Door
  • T-Type Coupe 2-Door
  • Custom Coupe 2-Door
  • T-Type Sedan 4-Door
  • Limited Coupe 2-Door
  • Custom Sedan 4-Door
  • Limited Sedan 4-Door
  • Base Coupe 2-Door

Engines covered

  • 3.8L 3800CC 231Cu. In. V6 GAS OHV Naturally Aspirated
  • 3.0L 181Cu. In. V6 GAS OHV Naturally Aspirated
  • 2.5L 2474CC 151Cu. In. l4 GAS OHV Naturally Aspirated
  • 4.3L 260Cu. In. V6 DIESEL OHV Naturally Aspirated
  • 2.8L 173Cu. 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

Payment & Security

Payment methods

  • American Express
  • Apple Pay
  • Bancontact
  • Google Pay
  • Maestro
  • Mastercard
  • PayPal
  • Union Pay
  • Visa

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

Vehicle Safety Data

1984 Buick Century Recalls & Complaints

NHTSA #85V03400029/03/1985Component: FUEL SYSTEM, GASOLINE:DELIVERY:HOSES, LINES/PIPING, AND FITTINGS

THE FUEL SYSTEM MAY LEAK AT THE THROTTLE BODY INJECTION FUEL FEED PIPE CONNECTION.

Remedy

REPLACE THE FUEL FEED PIPE.

NHTSA #85V10400014/08/1985Component: SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:DRUM

SOME WAGONS WERE ASSEMBLED WITH A JA2 REAR SYSTEM INSTEAD OF THE JA3 BRAKE SYSTEM. THESE STATION WAGONS MAY EXCEED THE MAXIMUM STOPPING DISTANCE REQUIRED BY FMVSS 105.

Remedy

INSTALL CORRECT BRAKE SYSTEM.

NHTSA #84V01100006/02/1984Component: SEATS:FRONT ASSEMBLY:RECLINER

SOME VEHICLES HAVE BUCKET SEAT BACK LOCKS THAT DO NOT CONFORM TO FEDERAL MOTOR VEHICLE SAFETY STANDARD 207, ANCHORAGE OF SEATS. IN EVENT OF A CRASH, THE SEAT BACK LOCK MAY NOT FUNCTION.

Remedy

INSPECTION OF SEAT BACK LOCKS WILL BE PERFORMED. LOCKS THAT HAVE BENT, BROKEN OR MISSING HOOKS WILL

No service bulletins No technical service bulletins on file with NHTSA for the 1984 Buick Century.
20020114Component: STRUCTURE

ENGINE CRADDLE BOLT WAS CRACKED ON LEFT SIDE OF VEHICLE, CAUSING OIL TO LEAK FROM ENGINE. DEALERSHIP WAS AWARE OF PROBLEM.*AK

20010816Component: ELECTRICAL SYSTEM:IGNITION:SWITCH

VEHICLE WOULD INTERMITTENTLY STALL WHILE DRIVING. VEHICLE BEEN INTO DEALER SHOP ON TEN OCCASIONS, AND THEY WERE UNABLE TO DUPLICATE THE PROBLEM. *AK DEALER HAS REPLACED SEVERAL THINGS IN AN ATTEMP

20010816Component: ENGINE AND ENGINE COOLING:ENGINE:GASOLINE

VEHICLE WOULD INTERMITTENTLY STALL WHILE DRIVING. VEHICLE BEEN INTO DEALER SHOP ON TEN OCCASIONS, AND THEY WERE UNABLE TO DUPLICATE THE PROBLEM. *AK DEALER HAS REPLACED SEVERAL THINGS IN AN ATTEMP

20010816Component: LATCHES/LOCKS/LINKAGES:DOORS:LATCH

VEHICLE WOULD INTERMITTENTLY STALL WHILE DRIVING. VEHICLE BEEN INTO DEALER SHOP ON TEN OCCASIONS, AND THEY WERE UNABLE TO DUPLICATE THE PROBLEM. *AK DEALER HAS REPLACED SEVERAL THINGS IN AN ATTEMP

19990830Component: ELECTRICAL SYSTEM:WIRING:FUSES AND CIRCUIT BREAKERS

FUSE FOR HORN KEEP'S BLOWING OUT

Showing the 5 most serious of 11 complaints filed with NHTSA.

All Model Years

Other Years of the Buick Century

Need a manual for a different year? Browse every Buick Century we cover.

Explore More

More Buick Models

Browse service and repair manuals for other Buick models in our catalog.