1991 Dodge W150 Service and Repair Manual

This factory service and repair manual for the 1991 Dodge W150 addresses the Base and S trims of a pickup offered as a 2-door standard cab or a 2-door extended cab. Its engine choices, each gasoline with overhead valves and natural aspiration, are a 239 cu in 3.9L V6, a 318 cu in 5.2L V8 and a 360 cu in 5.9L V8. Engine, fuel and cooling specifications are set down with torque values, wiring diagrams and diagnostic procedures for the ignition, transmission, drivetrain, brakes and steering.

Engines covered

• 3.9L V6 (239 cu in) — OHV, naturally aspirated, gasoline
• 5.2L V8 (318 cu in) — OHV, naturally aspirated, gasoline
• 5.9L V8 (360 cu in) — OHV, naturally aspirated, gasoline

Body styles covered

• 2-door extended cab pickup
• 2-door standard cab pickup

Trims covered

• Base
• S

Known issues on the 1991 W150. Whether fitted with the V6 or one of the V8s, this Base or S pickup runs a naturally aspirated gasoline engine with overhead valves, and its fuel, ignition and cooling systems receive procedures, specifications and diagnostics in the manual. Torque values and specifications also extend to the transmission, drivetrain, brakes, steering and suspension beneath both the extended cab and standard cab bodies, while wiring diagrams lay out the electrical system.