🏷️ Basic Information Identification Make: Audi Model: S4 Year: 1993 Generation Generation Designation: B4 (Typ 89Q) Codes Chassis Code: Typ 89Q 👋 Introduction Market Position Market Segment: Performance Sedan Competitive Analysis Competitors: BMW M3 (E30/E36 generation), Mercedes-Benz 190E 2.3-16/2.5-16, Ford Sierra RS Cosworth Key Features Vehicle Highlights: Turbocharged 5-cylinder engine, Quattro all-wheel drive, Sport-tuned suspension, Legendary performance and handling for its era Manual Value Proposition Value Statement: Provides authorized, comprehensive, and easily accessible repair and maintenance information for DIY enthusiasts and professional technicians alike, at a fraction of the cost of traditional printed manuals and shop time. 📋 Manual Details Coverage Areas Primary Coverage: Comprehensive Service and Repair Additional Coverage: Maintenance, Troubleshooting, Diagnostics, Component Replacement Page Count Estimated Page Count: Varies by Software Version (OE source material is extensive) Manual Type Type: Digital Service and Repair Manual (Software) Language Language: English Format Format: Online/Web-based Software 📖 Manual Coverage Systems Covered Powertrain: Engine (2.2L 5-cylinder Turbocharged), Drivetrain (Quattro All-Wheel Drive), Transmission (5-speed manual) Chassis: Suspension (front MacPherson struts, rear independent), Steering (power-assisted rack and pinion), Brakes (front ventilated discs, rear solid discs, ABS) Electrical: Wiring Diagrams, Lighting, Ignition System, Charging System, Instrumentation, Audio System Body And Interior: Body Panels, Doors, Glass, Seats, Climate Control System (HVAC), Interior Trim Fuel System: Fuel pump, injectors, fuel lines, fuel pressure regulator, fuel filter replacement. Exhaust System: Catalytic converter, mufflers, exhaust pipes, lambda sensors (oxygen sensors). Procedures Included Maintenance: Scheduled Maintenance, Oil Changes, Filter Replacements, Fluid Checks and Replacements Repair And Diagnostics: Engine Overhaul, Transmission Rebuild, Brake System Repair, Suspension Component Replacement, Electrical System Troubleshooting, HVAC System Repair Troubleshooting: Diagnostic flowcharts for common symptoms, troubleshooting guides for electrical and mechanical issues. Component Replacement: Detailed instructions for replacing major components like engine mounts, CV joints, wheel bearings, radiators, and alternators. Technical Depth Depth: Factory-level repair procedures, diagnostic codes, specifications, torque values, and step-by-step instructions Diagnostic Codes: Information on accessing and interpreting diagnostic trouble codes (DTCs) relevant to the Motronic engine management system. 📊 Manual Specifications File Format Format Details: Web-based application accessible via internet browser; compatible with PC, laptop, smartphone, tablet Print Quality Quality: High-resolution, digitally rendered graphics and text Binding Type Binding: N/A (Digital Format) Paper Type Paper Type: N/A (Digital Format) ⚙️ Engine Specifications Primary Engine Engine Code: ABY Engine Type: Inline 5-cylinder, turbocharged, intercooled Displacement: 2226 cc (2.2 Liters) Bore X Stroke: 85.0 mm x 98.0 mm Compression Ratio: 8.5:1 Valve Train: DOHC, 4 valves per cylinder (20 valves total) Performance Horsepower: 227 hp @ 5900 rpm (DIN) Torque: 243 lb-ft (329 Nm) @ 1950 rpm Fuel System Fuel Delivery: Bosch Motronic Electronic Fuel Injection (EFI) Fuel Type: Premium Unleaded Gasoline (91+ Octane) Cooling System Coolant Capacity: Approx. 9.5 Liters (10.0 US Quarts) Lubrication Oil Capacity: Approx. 4.5 Liters (4.8 US Quarts) with filter change Recommended Oil Viscosity: SAE 5W-40 or 10W-40 (depending on climate) 🔧 Transmission Standard Type: 5-speed Manual Transmission Optional Type: N/A for 1993 S4 (Manual was standard) Features Drivetrain: Permanent All-Wheel Drive (Quattro) Fluid Specifications Manual Transmission Fluid Type: API GL-4 or GL-5 gear oil, SAE 75W-90 recommended 📐 Dimensions Exterior Length: 4546 mm (179.0 inches) Width: 1710 mm (67.3 inches) Height: 1392 mm (54.8 inches) Wheelbase: 2610 mm (102.8 inches) Weights Curb Weight: Approx. 1480 kg (3263 lbs) 🛡️ Safety Features Ratings Crash Test Results: Limited data available for this era and specific model; modern standards not applicable. Active Features Braking System: Anti-lock Braking System (ABS) Passive Features Restraints: Front airbags (driver and passenger), Three-point seatbelts with pre-tensioners, Rear seatbelts 💡 Technology Features Infotainment Audio System: Factory AM/FM Cassette Player with optional CD Changer compatibility (early Audi Concert/Symphony systems may not be applicable) Driver Assistance ABS: Standard on all models Quattro: Advanced permanent all-wheel-drive system with Torsen center differential for optimal traction and handling Comfort Features Climate Control: Optional automatic climate control (Klima-Automatik) Windows Mirrors: Power-adjustable side mirrors, power windows (front and rear) 🔧 Maintenance Service Intervals Oil Change Interval: Every 10,000 km (6,000 miles) or 12 months, whichever comes first (Audi recommendation, actual usage may vary) Timing Belt Replacement: Every 90,000 km (55,000 miles) or 5 years Fluid Specifications Coolant Type: G11 (Blue) or equivalent silicate-free, ethylene glycol-based antifreeze Brake Fluid Type: DOT 4 Power Steering Fluid Type: Pentosin CHF 11S or compatible hydraulic fluid Known Issues Common Problems: Turbocharger wear, intercooler leaks, oil leaks (valve cover gaskets, oil pan), ABS sensor failures, window regulator failures, ignition coil issues, fuel pump reliability. Performance Tips: Regular maintenance is crucial for maintaining performance. Ensure proper cooling system function to prevent heat-related issues common in turbocharged engines. 📚 Vehicle History Brand Heritage Heritage Statement: Audi AG, a German automobile manufacturer, has a long history of engineering innovation and performance, particularly known for its Quattro all-wheel-drive system. Model Evolution S4 Evolution: The 1993 S4 represents the high-performance variant of the Audi...