This comprehensive Workshop Service Repair Manual provides detailed instructions and guidance for servicing and repairing your 1990 Porsche 911 Carrera 4. It covers a wide range of topics, from basic maintenance and troubleshooting to complex engine, transmission, and electrical system repairs. The manual is designed for both do-it-yourselfers and experienced mechanics, offering step-by-step procedures, clear illustrations, and in-depth explanations. It includes numerous diagrams, photos, and technical specifications to ensure you have all the information you need to complete any job. Key areas covered include general maintenance, troubleshooting, engine service and repair, transmission service and repair, brake system, wiring diagrams, electrical system, suspension, periodic lubrication, steering, cooling system, fuel injection, fuel system, emission system, heater and air conditioning, engine control system, chassis and body, restraint system, interior, differential and drive, and axle. This manual is an invaluable resource for anyone who wants to maintain and repair their 1990 Porsche 911 Carrera 4. Its detailed information and comprehensive coverage will help you keep your car running smoothly for years to come.

The Porsche 911 Carrera 4, introduced in 1990, marked a significant evolution in the iconic sports car's history. This model, also known as the 964 generation, incorporated innovations that enhanced both performance and practicality. The Carrera 4 was the first 911 to feature all-wheel drive, providing superior traction and handling, especially in challenging weather conditions. This system, known as Porsche Traction Management (PTM), cleverly distributed power between the front and rear axles, ensuring optimal grip and stability. Other notable additions included a redesigned body with rounded edges and a redesigned interior with a more modern, driver-focused layout. Under the hood, the 3.6-liter flat-six engine produced 250 horsepower, propelling the Carrera 4 from 0 to 60 mph in just 5.8 seconds. The 911 Carrera 4's introduction signified a shift in the 911's character. It was no longer simply a pure sports car but also a capable and refined all-weather machine. This versatility made the Carrera 4 a popular choice for both enthusiasts and those seeking a more practical yet exhilarating daily driver. The 964 generation boasted a number of improvements over its predecessors, including a revised suspension with independent rear suspension, enhanced safety features like anti-lock brakes (ABS), and a more refined interior with improved ergonomics. These advancements, coupled with the legendary 911 handling and performance, cemented the Carrera 4's place as a true icon in automotive history.