🏷️ Basic Information Identification Make: Audi Model: 100/200 Year: 1990 Codes Chassis Code: C3 (Type 44) 👋 Introduction Market Position Positioning: The Audi 100 and 200 of the 1990 model year represented Audi's executive-class offerings, known for their advanced technology, comfortable interiors, and refined driving experience, particularly with the quattro all-wheel-drive system. Competitive Analysis Competitors: Competed against other luxury sedans and coupes of the era, such as the Mercedes-Benz W124 E-Class, BMW E32 7 Series, and various Japanese luxury marques. Key Features Design Philosophy: Emphasized aerodynamics, safety, and innovative engineering, with a focus on the quattro system providing superior traction and handling. Target Audience: Professionals and discerning car owners seeking a blend of performance, luxury, and all-weather capability. 📋 Manual Details Coverage Areas Engines: Covers all gasoline and diesel engine variants offered for the 1990 Audi 100/200, including 2.0L, 2.3L, 2.2L Turbo (UR-Quattro often associated with 200 model), and potential diesel variants. Transmissions: Manual and automatic transmission systems. Drivetrain: Front-wheel drive (FWD) and quattro all-wheel drive (AWD) systems. Systems: Engine mechanicals, fuel injection, ignition, cooling, lubrication, exhaust, transmission, drivetrain components, suspension, steering, brakes, electrical system (including wiring diagrams), HVAC, body and chassis, interior trim, and diagnostics. Page Count Estimated Pages: Likely exceeds 1000 pages based on the depth of coverage indicated. Manual Type Type: Full Service Repair Manual Language Language: English Format File Format: PDF Delivery: Instant Download 📖 Manual Coverage Systems Covered Engine Mechanical: Detailed rebuild procedures for cylinder heads, engine blocks, pistons, crankshafts, camshafts, timing belts/chains, and related components. Includes torque specifications and clearances. Fuel System: Covers fuel injection systems (e.g., Bosch K-Jetronic, KE-Jetronic), fuel pumps, injectors, fuel pressure regulators, and diagnostic procedures for these components. Ignition System: Details on ignition timing, spark plugs, ignition coils, distributors (if applicable), and electronic control units (ECUs) related to ignition. Cooling System: Radiator, water pump, thermostat, cooling fans, coolant types, and troubleshooting for overheating issues. Lubrication System: Oil pump, oil filter, oil pan, oil types and capacities, and lubrication system diagnostics. Transmission Drivetrain: Repair and overhaul procedures for manual gearboxes, automatic transmissions, clutch systems, drive shafts, CV joints, differentials, and quattro system components. Suspension Steering: Front and rear suspension components (struts, shocks, control arms, bushings), power steering system (pump, rack and pinion), wheel alignment specifications. Brakes: Disc and drum brake systems, hydraulic components (master cylinder, calipers, wheel cylinders), brake fluid specifications, ABS (if equipped), and brake bleeding procedures. Electrical System: Comprehensive wiring diagrams for all vehicle systems, starter, alternator, battery, lighting, fuses, relays, and diagnostic procedures for electrical faults. HVAC: Heating, ventilation, and air conditioning system components, operation, and basic troubleshooting. Body Chassis: Body panel removal and installation, door mechanisms, glass replacement, chassis repair, and underbody components. Procedures Included Maintenance: Regular service intervals, oil changes, filter replacements, fluid checks and top-offs, spark plug replacement, timing belt replacement, and general upkeep recommendations. Troubleshooting: Systematic diagnostic procedures for common problems, including engine performance issues, electrical faults, starting problems, and braking system anomalies. Repair Rebuild: Step-by-step instructions for component removal, disassembly, inspection, repair, reassembly, and installation of major vehicle systems. Diagnostics: Detailed guidance on diagnosing issues, including OBD-I (if applicable for the era), multimeter usage, pressure testing, and interpretation of diagnostic codes. Technical Depth Depth: Comprehensive, covering everything from routine maintenance to complete engine and transmission overhauls. Suitable for professional technicians and advanced DIY enthusiasts. 📊 Manual Specifications File Format File Format: PDF Compatibility: Compatible with all versions of Windows and Mac OS. Print Quality Printability: Full printable pages, allowing users to print specific sections or the entire manual. Resolution: High-resolution PDF for clear text and sharp illustrations. Binding Type Binding Type: Digital (PDF Download), no physical binding. Paper Type Paper Type: Not applicable (Digital format). Requirements Software Requirements: Adobe PDF Reader and WinRAR (for potential archive extraction). ⚙️ Engine Specifications Primary Engine Engine Variant 1: 2.0L Inline-5 Cylinder (e.g., Audi 100 2.0E) Engine Variant 2: 2.3L Inline-5 Cylinder (e.g., Audi 100 2.3E) Engine Variant 3: 2.2L Inline-5 Cylinder Turbocharged (e.g., Audi 200 20V Turbo quattro) Performance Horsepower Range: Approximately 115 hp (2.0L) to over 220 hp (2.2L Turbocharged). Torque Range: Varies by engine; Turbocharged models offered significantly higher torque figures. Fuel System Injection Type: Bosch CIS (Continuous Injection System) or CIS-E (Electronic) fuel injection, and Motronic for turbocharged models. Fuel Type: Unleaded gasoline (Octane rating as per manufacturer's recommendation). 🔧 Transmission Standard Transmission Type: 5-speed manual transmission (standard on many models). Optional Transmission Type: 4-speed automatic transmission (optional). Features Drivetrain Options: Front-wheel drive (FWD) and the renowned quattro permanent all-wheel drive system. 📐 Dimensions Exterior Body Styles: Sedan, Avant (Wagon). Weights Curb Weight: Varies significantly by model and equipment, typically ranging from ~3000 lbs to over 3600 lbs. 🛡️ Safety Features Ratings Safety Features Era: While formal crash test ratings (like NHTSA's STAR system) were less standardized in 1990, Audi emphasized passive safety...