1990 Dodge W150 Service and Repair Manual

This factory service and repair manual for the 1990 Dodge W150 covers two trims, Base and S, and two pickup bodies, the 2-door extended cab and 2-door standard cab. Power is from a 3.9L V6 or a 5.2L or 5.9L V8, each an overhead-valve gasoline engine breathing without a turbocharger or supercharger. The manual supplies torque values and specifications for the engine and drivetrain, procedures for the brakes, steering and suspension, and wiring diagrams with diagnostics for the electrical, ignition and fuel systems.

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 1990 W150. One owner complaint has been filed for this year, and it concerns the wheels. The record also holds 1 recall: certain 1990 W150 pickups with a six-and-a-half-foot box, EFI and no rear bumper could, in a rear collision, have the box crossmember press into the fuel line at the pump module and leak fuel that might ignite. The fix added reinforcement brackets under the truck to keep them apart. Fuel system, body and wheel procedures, specifications, torque values, wiring diagrams and diagnostics are provided.