This comprehensive Audi 90 Factory Service Repair Manual covers models from 1988 to 1992. It is your essential guide for performing maintenance and repairs on your vehicle. The manual includes detailed instructions, diagrams, and specifications for every aspect of your Audi 90, from basic maintenance procedures to complex engine and transmission repairs. You'll find detailed information on:

* **Engine:** Covers all aspects of the engine, including tune-up, troubleshooting, and rebuild procedures.
* **Transmission:** Provides comprehensive coverage of the transmission system, including automatic and manual transmissions.
* **Electrical System:** Offers detailed information on the electrical system, including wiring diagrams, troubleshooting guides, and repair procedures.
* **Brakes:** Includes detailed instructions for servicing and repairing the brake system.
* **Suspension and Steering:** Provides comprehensive coverage of the suspension and steering systems, including alignment specifications and troubleshooting guides.
* **Body and Interior:** Includes information on bodywork, interior trim, and upholstery.
* **Wiring Diagrams:** Provides comprehensive wiring diagrams for all systems.
* **Troubleshooting Charts:** Offers detailed troubleshooting charts for identifying and resolving common problems.
* **Specifications:** Includes detailed specifications for all components and systems.

This manual is an indispensable resource for anyone who wants to maintain and repair their Audi 90.

The Audi 90, produced from 1987 to 1991, was a compact executive car that marked a significant shift in Audi's design philosophy and ushered in a new era of performance and luxury for the brand. This model, built on the Audi 80 platform but with a more upscale and luxurious interior, was a response to the increasing popularity of Japanese luxury sedans. Notably, the Audi 90 was the first car in the world to be offered with a 5-cylinder turbocharged engine, delivering a powerful and efficient driving experience. Its design, spearheaded by designer Hartmut Warkuss, integrated sharp lines and a distinctive, sloping front end, a feature that would become synonymous with Audi styling for years to come. The Audi 90 also incorporated a state-of-the-art, fully galvanized body for superior corrosion resistance, setting a new standard for durability in the automotive industry.

Beyond its striking design, the Audi 90 was packed with innovative features that enhanced both comfort and safety. These included power windows and door locks, a sophisticated audio system, a convenient sunroof, and optional features like a leather interior and air conditioning. Safety was also paramount, with the Audi 90 featuring advanced features like anti-lock brakes (ABS) and airbags, ensuring a secure and reassuring driving experience. The Audi 90 was offered in various trim levels, including the base model, the luxurious "Quattro" version, and the sporty "S" model. Each variant catered to a specific audience, offering a range of options that appealed to discerning drivers seeking both comfort and performance. The Audi 90's success solidified the brand's reputation for engineering excellence and design innovation, setting the stage for a new generation of luxurious and performance-oriented Audi vehicles.