1983 Oldsmobile Firenza Service and Repair Manual

This factory service and repair manual for the 1983 Oldsmobile Firenza addresses a model year with seven trims and three body styles. A four-door wagon joins the four-door sedan and two-door hatchback, and the trim list runs Base, Cruiser LX, Cruiser S, Cruiser SX, LX, S and SX. Two gasoline four-cylinders are listed: a 1.8L with a single overhead camshaft and a 2.0L with overhead valves, both naturally aspirated. Procedures and specifications cover the engine, fuel, ignition, cooling, transaxle, brakes, suspension, steering and body.

Engines covered

• 1.8L inline-four (112 cu in) — SOHC, naturally aspirated, gasoline
• 2.0L inline-four (122 cu in) — OHV, naturally aspirated, gasoline

Body styles covered

• 4-door sedan
• 2-door hatchback
• 4-door wagon

Trims covered

• Base
• Cruiser LX
• Cruiser S
• Cruiser SX
• LX
• S
• SX

Known issues on the 1983 Firenza. The 1983 Firenza carries 4 recalls. Certain 1983 Firenza passenger cars with a specific engine could suffer internal corrosion in the pulsair check valve, letting exhaust heat melt the plastic shutoff valve so pieces could reach the throttle body and hold the throttle open. Certain 1983 Firenza cars with a manually adjustable driver's seat could see the floor pan anchor bar crack at a seat adjuster stud, letting the seat tip backward. Certain 1983 Firenza vehicles were also recalled because brake proportioner valves could break away from the master cylinder, leaking fluid and causing a partial loss of braking. Brake, fuel and engine procedures, specifications and torque values cover these systems.