The Porsche 911 Carrera 4, generation 964, is an iconic coupe produced from 1989 to 1994. This model represents a significant evolution of the legendary 911, featuring over 85% new components, including its air-cooled 3.6-liter flat-six engine producing 250 horsepower. The Carrera 4 was the first production 911 to incorporate all-wheel drive, utilizing a viscous coupling system for enhanced traction and stability. Notable features include advanced aerodynamics with an integrated front spoiler and retractable rear spoiler, a distributorless ignition system, and the standard G50/03 5-speed manual transaxle. This generation is highly collectible, celebrated for its blend of classic 911 character with modern engineering and performance.

This comprehensive factory service repair manual provides detailed guidance for the Porsche 911 Carrera 4 (964) models from 1989 through 1994. It covers all essential systems, including the engine, transmission, chassis, suspension, brakes, and electrical systems, along with the specific all-wheel-drive mechanism. The manual offers step-by-step repair procedures, routine maintenance schedules, diagnostic troubleshooting guides, and critical technical specifications, such as torque values and alignment data. It is designed to assist owners, mechanics, and technicians in maintaining, diagnosing, and repairing the vehicle to factory standards, ensuring optimal performance and longevity.