🏷️ Basic Information Identification Make: Audi Model: 90 Year: 1990 Codes Chassis Code: Typ 89 (B3) Generation Generation: Second Generation (B3) 👋 Introduction Market Position Positioning: Premium compact sedan, positioned as a sportier and more refined alternative to mainstream sedans. Competitive Analysis Competitors: BMW 3 Series, Mercedes-Benz 190E, Acura Integra, Volvo 240. Key Features Distinctive Attributes: German engineering, advanced quattro all-wheel drive system, high-quality interior materials, refined driving dynamics. Manual Advantage Convenience: Instant online access, updated information, search functionality, superior to outdated printed manuals. Manual Source Licensing: Officially licensed and derived from OE (Original Equipment) materials. 📋 Manual Details Coverage Coverage Areas: Engine, Transmission, Drivetrain, Suspension, Steering, Brakes, Electrical System, HVAC, Bodywork, Emissions Format Manual Type: Service and Repair Manual Software Format: Online Access (Web Browser) Language: English Access Access Duration: 1 Year (with option for extension) 📖 Manual Coverage Systems Engine Coverage: Detailed diagnosis, repair, and overhaul procedures for all 1990 Audi 90 engine variants. Transmission Coverage: Service, repair, and overhaul procedures for manual and automatic transmissions. Drivetrain Coverage: Front-wheel drive (FWD) and quattro all-wheel drive (AWD) system service and repair. Suspension Steering Coverage: Front and rear suspension components, steering rack, power steering system diagnostics and repair. Brake Coverage: Hydraulic brake system components (master cylinder, calipers, lines), ABS system (if equipped), parking brake. Electrical Coverage: Wiring diagrams, component testing, diagnostic procedures for lighting, ignition, charging, starting, and accessories. HVAC Coverage: Air conditioning system (refrigerant handling, component testing, repair), heating system, ventilation. Bodywork Coverage: Body panel repair, door mechanisms, glass replacement, interior trim. Emissions Coverage: Emissions control system components, diagnostic trouble codes (DTCs), and troubleshooting. Procedures Maintenance Procedures: Scheduled maintenance tasks, oil changes, filter replacements, fluid checks and top-offs. Diagnostic Procedures: Step-by-step troubleshooting guides for common and complex issues, using diagnostic tools and techniques. Repair Procedures: Detailed, illustrated instructions for component removal, installation, and adjustment. Technical Depth Depth Of Information: Comprehensive, from basic maintenance to complete engine and transmission overhauls. 📊 Manual Specifications File Format Digital Format: Proprietary RepairSurge Web Application Print Quality Print Capability: Pages can be printed directly from the web browser. Binding Type Binding: N/A (Digital) Paper Type Paper Quality: N/A (Digital) Compatibility Device Compatibility: PC, Laptop, Smartphone, Tablet (with internet browser) ⚙️ Engine Specifications Primary Engine Engine Type: Inline 5-cylinder, naturally aspirated Displacement Liters: 2.3 L (2309 cc) Bore X Stroke Mm: 79.5 mm x 95.5 mm Engine Code Prefix: NG Performance Horsepower Hp: 130 hp @ 5500 rpm Torque Lb-Ft: 137 lb-ft @ 3000 rpm Fuel System Fuel Delivery: Bosch KE-Jetronic (CIS-E) Fuel Injection Ignition System Ignition Type: Electronic Ignition (Motronic) Cooling System Coolant Type Spec: G11 (Blue/Green) Antifreeze/Coolant Oil System Oil Capacity Liters: 4.5 L Recommended Oil Viscosity: SAE 5W-40 or 10W-40 Timing Timing Belt Replacement Interval Km: 60,000 km (approx. 37,000 miles) or 5 years 🔧 Transmission Standard Standard Transmission Type: 5-Speed Manual Optional Optional Transmission Type: 4-Speed Automatic (ZF 4HP-22) Features Drivetrain Options: Front-Wheel Drive (FWD) and quattro permanent All-Wheel Drive (AWD) Fluid Specifications Manual Transmission Fluid Spec: API GL-4 SAE 75W-90 Gear Oil Automatic Transmission Fluid Spec: Audi Automatic Transmission Fluid (ATF) or equivalent (e.g., Dexron II/III) 📐 Dimensions Exterior Length Mm: 4406 mm Width Mm: 1700 mm Height Mm: 1392 mm Wheelbase Mm: 2610 mm Weights Curb Weight Kg Approx: 1300 - 1450 kg (depending on drivetrain and options) Gross Vehicle Weight Rating Kg Approx: 1800 kg 🛡️ Safety Features Ratings NHTSA Overall Rating: Not rated or unavailable for this model year and market. Active Features ABS: Optional Anti-lock Braking System (ABS) available on some models. Passive Features Airbags: Driver-side airbag standard in most markets, passenger airbag not typically available. Seatbelts: Front and rear seat belts, front seat belt pre-tensioners. 💡 Technology Features Infotainment Audio System: Factory AM/FM/Cassette stereo system, optional CD player. Driver Assistance Cruise Control: Available as an option. Trip Computer: Rarely equipped, early form of onboard computer on some models. Connectivity Connectivity Features: None (basic vehicle electronics, no Bluetooth or USB). 🔧 Maintenance Service Intervals Oil Change Interval Km: 10,000 - 15,000 km (or annually) Air Filter Replacement Interval Km: 30,000 km Fuel Filter Replacement Interval Km: 40,000 km Spark Plug Replacement Interval Km: 40,000 - 60,000 km (depending on plug type) Fluid Specifications Brake Fluid Spec: DOT 4 Power Steering Fluid Spec: G 002 000 (or Pentosin CHF 11S) Known Issues Common Problems: Degradation of rubber components (hoses, seals), starter motor issues, fuel distributor leaks, ABS sensor failures, window regulator failures. Timing Belt Failure Consequences: Non-interference engine design; however, belt failure will cause the engine to stop running. 📚 Vehicle History Brand Heritage Audi Legacy: Audi's heritage of engineering innovation, four-wheel drive technology (quattro), and premium automotive design. Model Evolution Audi 90 B3 Introduction: The B3 generation of the Audi 80/90 series was introduced in 1986, with the 90 designation highlighting the more upscale features and...