🏷️ Basic Information Identification Make: Audi Model: 100 Model Generation: Fourth Generation (Type 44/4C) Model Years Covered: 1989 Codes Chassis Code: Type 44 / 4C 👋 Introduction Market Position Market Segment: Executive Sedan/Wagon, Premium Mid-size segment Competitive Analysis Key Competitors: BMW 5 Series (E34), Mercedes-Benz E-Class (W124), Volvo 240/740/940, Saab 9000 Key Features Model Highlights: Front-wheel drive architecture, available quattro all-wheel drive, galvanized unibody construction, refined interior, innovative aerodynamic design for its era. Manual Value Proposition: Provides essential technical data for maintaining and repairing the Audi 100, enabling DIY enthusiasts and professional mechanics to perform a wide range of tasks, saving on labor costs and extending vehicle lifespan. 📋 Manual Details Coverage Areas Primary Coverage: Service, Repair, and Maintenance Page Count Estimated Page Count: Extensive (typical workshop manuals for this era range from 500 to over 1000 pages) Manual Type Manual Type: Workshop Service and Repair Manual Language Language: English (presumed, standard for Audi manuals of this period) Format Format: PDF 📖 Manual Coverage Systems Covered Engine Systems: Engine mechanical, fuel injection (KE-Jetronic, Motronic), ignition, cooling, lubrication, exhaust Transmission Systems: Manual transmission, Automatic transmission (ZF 4HP-22), clutch system Drivetrain Systems: Front-wheel drive (FWD), quattro all-wheel drive (AWD) system (center differential, rear differential, drive shafts) Suspension Steering: Front independent suspension (MacPherson struts), rear independent suspension (semi-trailing arms), power steering system, steering gear Brake Systems: Front disc brakes, rear disc brakes, anti-lock braking system (ABS, if equipped), parking brake Electrical Systems: 12V electrical system, battery, alternator, starter motor, lighting, instrumentation, fuses, relays, wiring diagrams Body Chassis: Body construction, exterior panels, doors, windows, interior trim, sound insulation HVAC Systems: Heating, Ventilation, and Air Conditioning (HVAC) system, climate control Procedures Included Maintenance Procedures: Oil change, filter replacement, spark plug replacement, brake fluid flush, coolant flush, belt replacement, tune-ups Repair Procedures: Engine overhaul, transmission overhaul, suspension component replacement, brake caliper rebuild, electrical component diagnosis and repair Troubleshooting Diagnostics: Step-by-step diagnostic procedures for common faults, symptom-based troubleshooting guides Specification Settings: Valve clearances, ignition timing, fuel pressure, torque specifications for all fasteners, wheel alignment specifications Component Removal Installation: Detailed instructions for removing and installing all major mechanical and electrical components Technical Depth Depth Of Coverage: Comprehensive (covers everything from basic fluid changes to complete engine and transmission rebuilds) Diagnostic Capability: Advanced diagnostic routines and fault code interpretation for electronic systems (where applicable for 1989 models) Special Tools: Identification and usage of specialized tools required for specific procedures 📊 Manual Specifications File Format File Type: PDF Searchability: Searchable text (typical for well-digitized PDFs) Printability: Printable pages Print Quality Image Resolution: High resolution (essential for clear diagrams and illustrations) Binding Type Binding Type: N/A (Digital Download) Paper Type Paper Type: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Engine Type: Inline-5 Cylinder, Naturally Aspirated Engine Displacement Liters: 2.3 L (2309 cc) Engine Code Common: NG (Gasoline) Performance Horsepower Ps: 136 PS (approx. 134 hp) Torque Nm: 186 Nm (approx. 137 lb-ft) Fuel System Fuel Delivery: Bosch KE-Jetronic (CIS-E) fuel injection Fuel Type: Unleaded Gasoline (Premium recommended) Engine Management ECU Type: Motronic (integrated ignition and fuel control) Cooling System Coolant Type: Ethylene Glycol based coolant (G11 spec or equivalent, typically blue/green) 🔧 Transmission Standard Standard Transmission Type: 5-Speed Manual Optional Optional Transmission Type: ZF 4-Speed Automatic Transmission (4HP-22) Features Automatic Transmission Features: Lock-up torque converter, Sport/Comfort modes (if equipped) Fluid Specifications Manual Transmission Fluid: GL-4 Gear Oil (e.g., 75W-90 or 80W-90) Automatic Transmission Fluid: Dexron II or equivalent 📐 Dimensions Exterior Body Styles: 4-Door Sedan, 5-Door Avant (Wagon) Length Mm Sedan: 4755 mm Width Mm: 1770 mm Height Mm Sedan: 1430 mm Weights Curb Weight Kg FWD Sedan: 1300-1400 kg (approx.) Curb Weight Kg Quattro Sedan: 1400-1500 kg (approx.) 🛡️ Safety Features Ratings Crash Test Ratings: NHTSA/IIHS data for this era is less comprehensive than modern standards; focus is on engineering robustness and available features. Active Features ABS: Anti-lock Braking System (Optional on some models) Passive Features Seatbelts: 3-point inertia-reel seatbelts with front pre-tensioners (standard) Airbags: Driver-side airbag (Optional, became more common towards the end of the generation) Body Structure: Galvanized steel unibody for corrosion resistance, safety crumple zones 💡 Technology Features Infotainment Audio System: Factory fitted cassette radio with AM/FM tuner, optional CD player (late models) Driver Assistance Cruise Control: Optional cruise control system Connectivity External Ports: N/A (No factory external connectivity ports) 🔧 Maintenance Service Intervals Oil Change Interval Km Miles: Typically 10,000-15,000 km (6,000-10,000 miles) or 12 months, whichever comes first. Spark Plug Replacement Interval: Approximately 30,000-50,000 km (20,000-30,000 miles), depending on spark plug type. Timing Belt Replacement Interval: Critical: Typically 60,000-90,000 km (40,000-60,000 miles) or 5 years. Failure can cause severe engine damage. Fluid Specifications Engine Oil Type: API SG/SH or ACEA A2/A3, SAE 5W-40, 10W-40, or 15W-40 (depending on climate) Engine Oil Capacity Liters: Approx. 4.5 liters (4.8 US quarts) with filter Brake Fluid Type:...