1990 Pontiac Firebird Service and Repair Manual

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Factory-Grade Data

1990 Pontiac Firebird 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

  • Formula Coupe 2-Door
  • Trans Am GTA Coupe 2-Door
  • Trans Am Coupe 2-Door
  • Base Coupe 2-Door

Engines covered

  • 5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated
  • 5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated
  • 3.1L 189Cu. 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

1990 Pontiac Firebird Recalls & Complaints

NHTSA #07E08800024/10/2007Component: EQUIPMENT

CERTAIN HONEYWELL FRAM RACING BRAND HP4 AND HP8 OIL FILTERS THAT WERE MANUFACTURED FROM MAY 25, 2006, THROUGH SEPTEMBER 14, 2007, AND SOLD FOR USE AS REPLACEMENT EQUIPMENT FOR VEHICLES LIST ABOVE. TH

Consequence

THIS CONDITION MAY CAUSE INADEQUATE SEALING AND LOSS OF ENGINE OIL, POSSIBLY RESULTING IN A FIRE.

Remedy

HONEYWELL WILL REPLACE THE AFFECTED OIL FILTERS FREE OF CHARGE. THE RECALL BEGAN DURING NOVEMBER 20

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 #90V10500014/05/1990Component: SEAT BELTS:FRONT:BUCKLE ASSEMBLY

PLASTIC COMPONENTS OF SEAT BELT BUCKLE ASSEMBLIES DO NOT CONTAIN AN ULTRA VIOLET STABILIZER, AND EXPOSURE TO DIRECT SUNLIGHT AND ELEVATED INTERIOR TEMPERATURES COULD WEAKEN THE PLASTIC COMPONENTS.

Consequence

THIS COULD RESULT IN BREAKAGE OF PLASTIC COMPONENTS WHICHCOULD PREVENT BUCKLE FROM LATCHING AND PROT

Remedy

REPLACE OR REPAIR SEAT BELT BUCKLE.

NHTSA #90V11400012/06/1990Component: FUEL SYSTEM, GASOLINE:DELIVERY:HOSES, LINES/PIPING, AND FITTINGS

FUEL RETURN HOSES MAY BREAK AT EITHER CRIMPED COUPLING.

Consequence

IF THIS COUPLING SEPARATED, ALLOWING GASOLINE TO LEAK,AND AN IGNITION SOURCE WAS PRESENT, AN ENGINE

Remedy

INSTALL A PROPERLY CRIMPED FUEL RETURN HOSE.

TSB #10006297

NO SERIAL DATA COMMUNICATIONS USING THE TECH 1 WITH A 1986 OR NEWER CAMARO, FIREBIRD OR CORVETTE WITH A 5.0 OR 5.7 LITRE ENGINE. SIT BULLETIN 1450640. *TT

TSB #634999

DIAGNOSIS OF CRACKED OR BROKEN TRANSMISSION CASE. *TT 2006 AND PRIOR CARS AND LIGHT DUTY TRUCKS. *TT

TSB #615073

SOME V6 ENGINES MAY, ON A VERY INFREQUENT BASIS, HAVE AN OIL ODOR CONDITION THAT IS GENERALLY ENCOUNTERED AFTER THE ENGINE'S OIL HAS BEEN CHANGED.TYPICALLY THE ODOR LASTS APPROXIMATELY 1000 MILES AFTER THE CHANGE OF OIL AND THEN DOES NOT RE

19960207Component: AIR BAGS:FRONTALCrash reported

DRIVER'S SIDE AIRBAG DID NOT DEPLOY IN A FRONTAL COLLISION (12:00) AT 45 MPH. TT

19950331Component: ELECTRICAL SYSTEM:WIRING:FRONT UNDERHOODFire reported5 injured

ENGINE COMPARTMENT FIRE, WHEN STARTING VEHICLE. TT

19990701Component: ENGINE AND ENGINE COOLING:COOLING SYSTEMFire reported

PURCHASSED CAR 9/98 FROM ACCENT AUTO ANOTHER CHANCE FINANCE, RETURNED TO DEALER WITH OVERHEATING PROBLEMS NEXT DAY. THEY SAID IT WAS A MINOR PROBLEM & SAID IT WAS FIXED. CONTINUED TO OVERHEAT, WAS BRO

19950418Component: ELECTRICAL SYSTEM:WIRING:FRONT UNDERHOODFire reported

VEHICLE FIRE WHEN TURNING ON IGNITION, ENGINE COMPARTMENT FIRE. TT

20141202Component: SEAT BELTS

INSIDE PLASTIC PARTS BROKE ON DRIVER SIDE SEAT BELT. REPLACEMENT DOES NOT STAY BUCKLED. RECALLS - SEARCH RESULTS SEARCH RESULTS REPORT DATE : DECEMBER 2, 2014 AT 11:21 PM NHTSA CAMPAIGN

Showing the 5 most serious of 10 complaints filed with NHTSA.

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