This manual covers the 100 and 200 models from 1991, belonging to the C3 (Typ 445) generation. These vehicles are renowned for engineering quality, featuring a sophisticated inline-five-cylinder engine available in naturally aspirated or turbocharged configurations, coupled with either front-wheel drive or the advanced quattro all-wheel-drive system. Available as a 4-door sedan or 5-door Avant wagon, these models offered a blend of performance, comfort, and technology for their time, including features like aerodynamic styling and optional Anti-lock Braking System (ABS). This comprehensive repair service manual provides detailed information for maintaining and repairing your 100 or 200. It covers all major systems, including engine mechanicals, fuel, ignition, cooling, lubrication, transmissions (manual and automatic), drivetrain, suspension, brakes, steering, electrical systems, climate control, and bodywork. Within its pages, you will find routine maintenance procedures, step-by-step disassembly and assembly instructions, repair and rebuild guidance, diagnostic testing protocols, component replacement steps, and crucial technical specifications and torque values. This resource is designed to assist professional automotive technicians and experienced DIY mechanics in ensuring the optimal performance and longevity of their vehicles. 🏷️ Basic Information Identification Make: Audi Model: 100 / 200 Year: 1991 Generation Generation Code: C3 (Typ 445) Codes Chassis Code: Typ 445 👋 Introduction Market Position Target Audience: Professional automotive technicians and experienced DIY mechanics with a foundational understanding of vehicle systems. Competitive Analysis Manual Type Comparison: Similar to factory service manuals, offering more detail than owner's manuals and covering a broader scope than generic repair guides. Key Features Instant Download: Available for instant download, allowing immediate access to repair information. Step By Step Guidance: Provides step-by-step instructions for repairs and maintenance, simplifying complex procedures. Factory Level Data: Contains data typically found in official factory service manuals, offering high accuracy and detail. 📋 Manual Details Coverage Areas Model Variants Covered: Audi 100 (sedan, avant), Audi 200 (sedan, avant) Page Count Estimated Page Count: Varies by specific factory publication, but comprehensive for its era. Typically 1000+ pages for a full factory service manual. Manual Type Type: Repair Service Manual / Workshop Manual Language Language: English Format File Format: PDF 📖 Manual Coverage Systems Covered Engine Mechanical: All engine types, including disassembly, assembly, inspection, and repair of major components (block, heads, pistons, crankshaft, camshafts, valvetrain). Engine Fuel System: Fuel injection systems (Bosch KE-Jetronic/CIS-E variants), fuel pumps, injectors, fuel lines, pressure regulators. Engine Ignition System: Ignition timing, coil packs, distributor (if applicable), spark plugs, electronic ignition control. Engine Cooling System: Radiator, thermostat, water pump, hoses, coolant flow, fan operation. Engine Lubrication System: Oil pump, oil filter, oil galleries, oil pressure testing, oil specifications. Transmission Manual: Manual gearbox disassembly, assembly, clutch operation, torque specifications. Transmission Automatic: Automatic transmission (e.g., ZF 4HPxx series) operation, hydraulic systems, torque converter, troubleshooting, fluid specifications. Drivetrain: Front-wheel drive (FWD) and Quattro all-wheel drive (AWD) systems, differential components, driveshafts, CV joints. Suspension Front: MacPherson struts, control arms, ball joints, bushings, anti-roll bar, alignment specifications. Suspension Rear: Independent rear suspension (e.g., semi-trailing arm or multi-link depending on specific sub-model), shock absorbers, springs, bushings, alignment. Brakes Front: Disc brake systems, caliper overhaul, pad replacement, rotor specifications, fluid types. Brakes Rear: Disc brake systems (or drum on some variants), caliper/drum overhaul, pad/shoe replacement, rotor/drum specifications. Steering: Power steering system, steering rack, tie rods, hydraulic pump, fluid types, troubleshooting. Electrical System: Battery, alternator, starter motor, wiring diagrams, fuses, relays, lighting circuits. Engine Control Unit: ECU diagnostics, sensor testing (e.g., MAP, TPS, O2), actuator testing. Climate Control: HVAC system operation, blower motor, heater core, A/C system (refrigerant handling, compressor, condenser, evaporator), climate control panel. Body And Interior: Door mechanisms, window regulators, seat adjustments, trim panel removal and installation. Exhaust System: Exhaust manifold, catalytic converter, muffler, pipe routing, emission control components. Wheels And Tires: Tire pressure recommendations, wheel torque specifications, tire sizes. Procedures Included Routine Maintenance: Oil changes, filter replacements, fluid checks and top-offs, spark plug replacement, belt inspection/adjustment. Troubleshooting: Diagnostic flowcharts for common drivability, starting, electrical, and mechanical issues. Disassembly And Assembly: Detailed step-by-step instructions for removing and reinstalling major components and sub-assemblies. Repair And Rebuild: Comprehensive instructions for repairing or rebuilding various vehicle systems and components. Diagnostic Testing: Procedures for testing sensors, actuators, and electrical circuits using multimeters, oscilloscopes, and specialized diagnostic tools. Component Replacement: Instructions for replacing wear items and faulty components such as brake pads, spark plugs, belts, hoses, and more. Specifications And Torques: Critical torque values for fasteners, engine bearing clearances, cylinder head bolt tightening sequences, etc. Technical Depth Depth Of Coverage: Factory-level detail, suitable for professional technicians and advanced DIY enthusiasts. Covers from basic maintenance to complete engine and transmission overhauls. 📊 Manual Specifications File Format Digital Format: PDF Print Quality Printability: Full Printable Accessibility Zoom Functionality: YES (Zoom IN/OUT capability) Binding Type Digital Binding: N/A (Digital Download) Paper Type Digital Medium: N/A (Digital Download) Software Requirements Reader Software: Adobe PDF Reader Extraction...