This comprehensive repair manual covers everything you need to maintain and repair your 2001 Audi S4. It provides detailed information on a wide range of topics, including: * **General Information:** Understanding the basics of your car, from its design to its key components. * **Routine Maintenance:** Learn how to perform regular maintenance tasks like oil changes, filter replacements, and fluid checks. * **Engine Removal and Installation:** Get step-by-step instructions on removing and reinstalling your engine, a complex process that requires precision and expertise. * **Fuel System:** Learn about the intricacies of your car's fuel system, from the fuel lines and tank to the injectors and fuel pump. * **Lubrication and Cooling System:** Understand how your car's lubrication system keeps its moving parts running smoothly, and how the cooling system keeps it from overheating. * **Engine Specifications:** Detailed information on all the engine's technical specifications, helping you diagnose issues and perform repairs correctly. * **Transmission, Drive Chain & Sprockets:** Comprehensive guidance on your car's transmission system, including how it works, how to maintain it, and common problems. * **Steering System:** Learn about the components and workings of your car's steering system, ensuring safe and responsive handling. * **Shocks:** Understand the role of your car's shock absorbers in providing a comfortable ride and handling, and learn how to diagnose and replace them. * **Body Work:** Get insights into your car's body structure, including information on repairing dents, scratches, and other cosmetic damage. * **Intake & Exhaust:** Explore the workings of your car's intake and exhaust systems, how they affect performance, and how to troubleshoot common problems. * **Electrical System:** Dive into the complexities of your car's electrical system, from the battery and wiring to the sensors and control units. * **Advanced Troubleshooting:** This manual equips you with the knowledge to diagnose and solve even the most challenging problems with your Audi S4. This repair manual provides you with all the necessary information to service and repair your 2001 Audi S4, making you self-sufficient and saving you money on costly repair shop visits.

The 2001 Audi S4 is a high-performance sedan that embodies the German automaker's commitment to driving dynamics and luxury. It is the second generation of the S4 model line, which sits above the standard A4 in terms of performance and features. Powered by a 2.7-liter twin-turbocharged V6 engine, the S4 delivers a potent 250 horsepower and 258 lb-ft of torque. This engine is mated to a six-speed manual transmission, sending power to all four wheels through Audi's quattro all-wheel-drive system. The S4's performance is further enhanced by its sport-tuned suspension, larger brakes, and aerodynamic bodywork. Inside, the S4 offers a luxurious and driver-focused cabin with supportive sport seats, leather upholstery, and a premium sound system. The 2001 S4 stands out for its sophisticated engineering and blend of performance and practicality. It features a double-wishbone front suspension and a multilink rear suspension, providing sharp handling and excellent ride quality. The quattro all-wheel-drive system ensures confident grip and traction in all weather conditions. The S4's interior is well-appointed with comfortable and supportive seats, a user-friendly dashboard, and a comprehensive suite of features. Although produced over two decades ago, the 2001 Audi S4 remains a desirable and capable car, offering a compelling balance of performance, luxury, and practicality. Its unique combination of features and driving experience makes it a sought-after classic among enthusiasts and collectors. Its repair manual is an essential tool for owners looking to maintain and restore their beloved S4 to its former glory.