This manual covers the Audi 100 and 200 models from the 1990 model year, representing the third generation (C3) chassis, Type 44. These executive sedans were distinguished by their advanced aerodynamic design, a hallmark of Audi's engineering philosophy, and offered sophisticated interiors and robust build quality. Notable features included the optional Quattro all-wheel-drive system, which enhanced traction and performance, and the Procon-ten safety system, an early form of passive restraint technology. The Audi 100 and 200 competed in a premium market segment, emphasizing driver comfort, technological innovation, and a refined driving experience. This comprehensive repair service manual provides detailed information for the maintenance, diagnosis, and repair of the Audi 100/200. It encompasses a wide array of systems, including engine (petrol and diesel), fuel, ignition, cooling, exhaust, transmission, drivetrain, suspension, steering, brakes, and the electrical system. The manual offers step-by-step repair procedures, disassembly and assembly instructions, component testing, diagnostic troubleshooting guides, and essential technical specifications such as torque values and wiring diagrams. Aimed at professional technicians and advanced DIY enthusiasts, this English-language manual is designed to facilitate accurate and efficient servicing of these vehicles. 🏷️ Basic Information Identification Make: Audi Model: 100/200 Year: 1990 Generation Generation: Third Generation (C3) Codes Chassis Code: Type 44 👋 Introduction Market Position Market Position: The Audi 100 and 200 represented Audi's foray into the executive sedan segment, competing with established luxury brands. This generation emphasized advanced technology and refined engineering for its time. Target Audience: Professionals and enthusiasts seeking detailed information for maintenance, repair, and restoration of the Audi 100/200. Competitive Analysis Competitive Analysis: Competed against vehicles such as the BMW 5 Series, Mercedes-Benz E-Class, and Volvo 700 Series. Key selling points included its aerodynamic design, Quattro all-wheel-drive system, and advanced technology like the Procon-ten safety system. Key Features Key Features: Aerodynamic 'Audi 100 aero' design, available Quattro all-wheel drive, sophisticated interior, and a focus on build quality and driver comfort. 📋 Manual Details Coverage Areas Coverage Areas: Comprehensive coverage for Audi 100 and 200 models of the 1990 model year. Model Variants Covered: Includes coverage for both the Audi 100 and the more performance-oriented Audi 200, encompassing all their key differences and shared components for the 1990 model year. Page Count Page Count: Not Specified (digital download, page count can vary based on internal formatting and resolution) Manual Type Manual Type: Repair Service Manual / Workshop Manual Manual Style: Factory-level detail, often mirroring original Audi service documentation. Language Language: English Format Format: PDF 📖 Manual Coverage Systems Covered Systems Covered: Engine (petrol and diesel), Fuel System, Ignition System, Cooling System, Exhaust System, Transmission (manual and automatic), Clutch, Drivetrain, Suspension (front and rear), Steering System, Brakes (front and rear), Electrical System (charging, starting, lighting, ignition, instruments, accessories), Bodywork, Chassis, Climate Control, Safety Systems. Electrical Diagrams: Comprehensive wiring diagrams for all electrical systems, including engine management, lighting, instruments, and accessories. Engine Mechanical: Cylinder head overhaul, piston and connecting rod installation, crankshaft and bearing inspection, camshaft timing, valve clearance adjustment. Brake System: Brake pad and rotor replacement, caliper servicing, brake line replacement, hydraulic system bleeding, ABS component testing. Suspension And Steering: Shock absorber and spring replacement, control arm bushing replacement, ball joint inspection, power steering pump and rack service, wheel alignment specifications. Climate Control: Service and repair of the heating, ventilation, and air conditioning (HVAC) system, including refrigerant handling (where applicable). Procedures Included Procedures Included: Step-by-step repair procedures, disassembly, assembly, cleaning, inspection, reinstallation, diagnostics, troubleshooting, routine maintenance, component testing, adjustments, specifications, torque values, wiring diagrams, schematics. Troubleshooting Guides: Detailed troubleshooting charts and procedures for common electrical and mechanical faults, symptom-based diagnostics. Timing Belt Replacement: Detailed procedure for timing belt replacement, including tensioning and alignment of camshaft and crankshaft pulleys. Component Replacements: Instructions for replacing major components such as starter motor, alternator, radiator, fuel pump, and sensors. Torque Specifications: Extensive list of torque values for all critical fasteners across various systems, essential for proper assembly. Body Repairs: Guidelines for minor bodywork repairs, panel alignment, and rust prevention/treatment. Technical Depth Technical Depth: Aimed at professional technicians but accessible to advanced DIY mechanics with basic mechanical and electrical knowledge. Covers detailed repairs and diagnostics beyond basic owner's manual information. Diagnostic Procedures: In-depth procedures for diagnosing issues with fuel injection systems (CIS/CIS-E), engine control units (ECU), ignition systems, and ABS. Special Tools: Identification and usage of specialized tools required for specific repair procedures. 📊 Manual Specifications File Format File Format: PDF Print Quality Print Quality: Full Printable (allows users to print sections or the entire manual as needed) Binding Type Binding Type: Digital (no physical binding, delivered as a downloadable file) Paper Type Paper Type: N/A (Digital format) Zoom Capability Zoom Capability: Yes (allows zooming in for detailed inspection of diagrams and text) Requirements Requirements: Adobe PDF Reader, WinZip (for decompression if archived) Compatibility Compatibility: All Versions of Windows & Mac...