1985 Pontiac Fiero Service and Repair Manual

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Factory-Grade Data

1985 Pontiac Fiero 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.

Designed for technicians and DIY owners, this manual helps you diagnose issues correctly, follow proven repair steps, and use wiring diagrams and system sections to track faults faster.

What’s included

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

Trims covered

  • Sport Coupe 2-Door
  • SE Coupe 2-Door
  • GT Coupe 2-Door
  • Base Coupe 2-Door

Engines covered

  • 2.8L 173Cu. In. V6 GAS OHV Naturally Aspirated
  • 2.5L 2474CC 151Cu. In. l4 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

1985 Pontiac Fiero Recalls & Complaints

NHTSA #89V23200028/12/1989Component: ENGINE AND ENGINE COOLING:ENGINE:GASOLINE

DUE TO AN INTERACTION OF THE ENGINE COMPARTMENT ENVIRONMENT AND MAINTENANCE OR SERVICE RELATED FACTORS, THERE IS A RISK OF ENGINE COMPARTMENT FIRES.

Consequence

AN ENGINE COMPARTMENT FIRE CAN SPREAD TO THE PASSENGERCOMPARTMENT AND INJURE OCCUPANTS.

Remedy

CORRECT OR INSTALL NEW ENGINE COMPONENTS TO PREVENT UNREASONABLE FIRE RISK.

NHTSA #90V10400023/04/1990Component: ENGINE AND ENGINE COOLING:ENGINE:GASOLINE

PCV GROMMET OIL LEAKS, TRANSMISSION OIL COOLER LEAKS, PISTON CONNECTING ROD FAILURES BREAKING THROUGH ENGINE WALL CAUSING OIL SPILLAGE, FUEL RAIL LEAKS, COOLANT LEAKS, ROCKER COVER OIL LEAKS, AND MAIN

Consequence

AN ENGINE COMPARTMENT FIRE CAN SPREAD TO THE PASSENGERCOMPARTMENT AND INJURE OCCUPANTS.

Remedy

CORRECT OR INSTALL NEW COMPONENTS TO PREVENT UNREASONABLE FIRE RISK.

NHTSA #06E04300019/05/2006Component: FUEL SYSTEM, GASOLINE

CERTAIN REPLACEMENT FUEL FILTERS, FRAM BRAND NAME P/N G3727, WITH DATE CODES X52911 THROUGH X60801 SEQUENTIALLY OR X600141 AND A MEXICO COUNTRY OR ORIGIN MARKING ON THE FUEL FILTER HOUSING MANUFACTURE

Consequence

THIS CONDITION MAY CAUSE AN INADEQUATE SEAL AT THE CONNECTION, POTENTIALLY LEADING TO A FUEL LEAK. I

Remedy

HONEYWELL WILL NOTIFY OWNERS AND REPLACE THE FUEL FILTERS FREE OF CHARGE. THE RECALL BEGAN ON OCTOB

NHTSA #91V05500011/04/1991Component: PARKING BRAKE:CONVENTIONAL

PARKING BRAKE ADJUSTER FAILS TO OPERATE AND DO NOT WORK AFTER BRAKE PAD WEAR.

Consequence

PARKING BRAKES WILL NOT COMPLETELY HOLD A PARKED VEHICLEWHEN PARKED ON A SLOPE, CAUSING UNINTENDED V

Remedy

REPLACE NONFUNCTIONING PARKING BRAKE ADJUSTERS.

No service bulletins No technical service bulletins on file with NHTSA for the 1985 Pontiac Fiero.
19950328Component: ENGINE AND ENGINE COOLING:ENGINECrash reported

MOTOR MOUNTS CAME APART. TT

20010913Component: ENGINE AND ENGINE COOLING:ENGINE:GASOLINEFire reported

RECALLS 89 V 232 000/ENGINE AND 90 V 104 000/ENGINE: VEHICLE HAD AN ENGINE COMPARTMENT FIRE WHILE TRAVELING 15-20 MPH. MANUFACTURER WAS NOTIFIED. FEEL FREE TO PROVIDE ANY FURTHER INFORMATION ON TH

19990211Component: ENGINE AND ENGINE COOLING:EXHAUST SYSTEMFire reported

MY CAR STARTED TO DEVELOP WHAT I THOUGHT WAS AN EXHAUST LEAK FROM NORMAL WEAR & TEAR. I TOOK THE VEHICLE TO SEVERAL EXHAUST SPECIALTY SHOPS (I.E. COLE MUFFLER, MIDAS, ETC.) TO HAVE THE PROBLEM CORREC

19970226Component: ENGINE AND ENGINE COOLING:ENGINE:GASOLINEFire reported

TOOK TO DEALER TO BE REPAIRED AND THE DEALER BROKE PARTS OF THE ENGINE AND IS CHARGING CONSUMER FOR FIXING VEHICLE UNDER A RECALL THAT WAS NOT CORRECTED THE FIRST TIME. *AK

19950310Component: ENGINE AND ENGINE COOLING:ENGINE:GASOLINEFire reported

ENGINE FAILED, CAUSING OIL LEAKAGE, RESULTING IN A FIRE PRIO TO/AFTER RECALL REPAIRS (90V-104). *AK

Showing the 5 most serious of 40 complaints filed with NHTSA.

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