1991 Isuzu Impulse Service and Repair Manual

1991 was the busiest year for the Impulse. The XS continued with its 1.6L twin-cam, and it was joined by the RS, which added a turbocharged 1.6L rated at 160 horsepower and full-time all-wheel drive with viscous couplings. A second body, an extended-roof hatchback with more rear headroom, also appeared beside the original 2+2 hatchback. This service and repair manual covers the 1991 Impulse with procedures, specifications, torque values, wiring diagrams, diagnostics and maintenance schedules for the naturally aspirated and turbocharged engines and the all-wheel-drive system.

Engines covered

• 1.6L inline-four — DOHC, naturally aspirated, gasoline
• 1.6L inline-four — DOHC, turbocharged, gasoline

Body styles covered

• 2-door hatchback

Trims covered

• RS
• XS

Known issues on the 1991 Impulse. One recall is on federal record. It concerns a steering wheel center hub that can fracture during certain frontal and near-frontal collisions. NHTSA has also logged 26 owner complaints, most often about the electrical system and speed control. The manual's steering column and supplemental restraint sections cover the related removal and installation work.