This manual covers the 1991 Ford Mustang, a performance-oriented coupe and convertible that continued the legacy of the iconic 'pony car'. Built on the refined third-generation 'Fox Body' platform, the 1991 Mustang featured updated styling, a standard driver-side airbag, and optional anti-lock brakes. It was offered with a choice of a 2.3L Inline-4 or a more powerful 5.0L V8 engine, both equipped with Electronic Fuel Injection (EFI). Known for its sporty handling and strong performance, particularly in V8 configurations, the Mustang competed in the performance coupe segment against rivals like the Chevrolet Camaro and Toyota Supra.

This comprehensive factory service manual provides detailed information for the maintenance, diagnosis, and repair of the 1991 Ford Mustang. It covers essential areas including routine maintenance procedures, engine mechanicals for both the 2.3L and 5.0L engines, fuel and emissions systems, ignition, lubrication, cooling, exhaust, and driveline components. The manual also details the 4-speed automatic and 5-speed manual transmissions, suspension, steering, brake systems, and the vehicle's electrical system, including wiring diagrams and OBD-I diagnostics. With extensive coverage of body and interior repairs, this manual is an indispensable resource for owners and technicians alike.