1991 Pontiac Firebird Service and Repair Manual

This factory service and repair manual for the 1991 Pontiac Firebird handles both the two-door coupe and the two-door convertible. Buyers picked Base, Formula, Trans Am or Trans Am GTA trim, and under the hood sat one of three naturally aspirated overhead-valve gasoline engines: a 3.1-liter V6, a 5.0-liter V8 or a 5.7-liter V8. For this car the manual provides procedures, specifications, torque values, wiring diagrams and diagnostics covering the engine, fuel system, ignition, cooling, transmission, drivetrain, brakes, suspension, steering, electrical system and body.

Engines covered

• 3.1L V6 (189 cu in) — OHV, naturally aspirated, gasoline
• 5.0L V8 (305 cu in) — OHV, naturally aspirated, gasoline
• 5.7L V8 (350 cu in) — OHV, naturally aspirated, gasoline

Body styles covered

• 2-door coupe
• 2-door convertible

Trims covered

• Base
• Formula
• Trans Am
• Trans Am GTA

Known issues on the 1991 Firebird. Fuel system complaints lead the 29 filed by owners, at 7, and the 3 recalls for this year start there too. A soldered joint on the filler neck of certain 1991 Firebird vehicles could crack or develop pinholes, releasing fuel and vapor; dealers inspected tanks and replaced faulty ones. On certain 1991 Firebird coupes and convertibles, 40,696 vehicles, the metal latchplates might not lock into the buckles. Certain 1991 Firebird cars, 21 of them, also had windshields so poorly bonded that they could come away in a collision. Of the complaints, 4 reported a crash and 3 an injury. The fuel system and body procedures and specifications here address these areas.