1990 Isuzu Pickup Service and Repair Manual

Built in Lafayette, Indiana, the 1990 Isuzu Pickup offered one of the broadest lineups among compact trucks: regular cab short and long beds, a Spacecab extended cab, and a heavy-duty 1 Ton model. Power came from a 2.3L SOHC inline-four rated at 96 horsepower or a 2.6L SOHC four of about 120 horsepower, with S, XS and LS trims. This factory service and repair manual is written for the 1990 truck, with procedures, specifications, torque values, wiring diagrams, diagnostics and maintenance schedules for both four-cylinder engines and the two- and four-wheel-drive chassis.

Engines covered

• 2.3L inline-four — SOHC, naturally aspirated, gasoline
• 2.6L inline-four — SOHC, naturally aspirated, gasoline

Body styles covered

• 2-door regular cab pickup
• 2-door extended cab pickup

Trims covered

• 1 Ton
• LS
• S
• XS

Known issues on the 1990 Pickup. Two recalls are on federal record. They are an equipment campaign for Pro-A Motors aftermarket corner lamps, turn signals and headlights sold as replacements that lack the required amber side reflectors, and a campaign for front seat belt buckles whose red plastic release buttons can break and jam the buckle. NHTSA has also logged 10 owner complaints, most often about speed control and the seat belts. Seat belt buckle and lamp replacement steps in the manual cover both items.