1991 Dodge B150 Service and Repair Manual

This factory service and repair manual for the 1991 Dodge B150 covers a Base van offered with V6 or V8 power. The V6 is a 3.9L (239 cu in) unit and the V8 a 5.2L (318 cu in); both are overhead-valve designs that run naturally aspirated on gasoline. Two bodies were listed, the 3-door standard cargo van and the 3-door standard passenger van. The manual supplies procedures, specifications, torque values, wiring diagrams and diagnostics across the engine, fuel and cooling systems, the transmission and drivetrain, and the chassis.

Engines covered

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

Body styles covered

• 3-door standard cargo van
• 3-door standard passenger van

Trims covered

• Base

Known issues on the 1991 B150. NHTSA holds 1 owner complaint for this model year, filed under vehicle speed control, the system that holds a set cruising speed. That complaint names speed control and no other component. Speed control ties into the electrical system, so the manual's wiring diagrams and diagnostics for that system, alongside engine procedures and specifications, are where to start when checking how this van maintains its speed.