🏷️ Basic Information Identification Make: Audi Model: Coupe Quattro Year: 1990-1991 Codes Paint Code Location: Referenced in catalog (typically door jamb or under hood) Clear Coat Identification: Referenced in catalog 👋 Introduction Market Position Segment: Compact executive coupe, known for its performance-oriented all-wheel-drive Quattro system. Target Audience: Audi Coupe Quattro owners, independent repair shops, automotive enthusiasts undertaking restoration or maintenance. Competitive Analysis Key Competitors: BMW 3 Series (E30), Mercedes-Benz 190E, Ford Sierra Cosworth, Lancia Delta Integrale. Key Features Vehicle Highlights: Legendary Quattro all-wheel-drive system, sporty coupe design, sophisticated interior for its era, balanced handling. Catalog Value Proposition: Essential tool for accurate parts identification and pricing, critical for budget planning and efficient repairs. 📋 Manual Details Coverage Areas Catalog Scope: Comprehensive parts listing for 1990-1991 Audi Coupe Quattro Specific Components Covered: Engine mounts, transmission mounts, engine under cover, air cleaner, exhaust, front bumper, grille, front lamps, windshield, hood, cowl & dash, cooling system, instrument panel, engine oil cooler, center console, A/C refrigerant capacities, rocker/pillars/floor, A/C heater/ventilation, front seat, front fender, rear seat, seat belts, front inner structure, front door, roof, sunroof, back window, wheel, quarter panel, quarter glass, luggage lid, front suspension, front steering linkage/gear, rear suspension, steering pump, fuel tank, steering wheel/column, rear body, rear lamps, rear bumper, emission system, ABS/brakes, cruise control system, information labels, special cautions Page Count Estimated Page Count: Not specified, but extensive due to detailed parts listing. Manual Type Type: Parts List Catalog Language Language: English (Assumed, typical for this market) Format Format: PDF 📖 Manual Coverage Systems Covered Powertrain: Engine and transmission components (excluding internal parts), mounts, exhaust, cooling system, fuel tank, engine oil cooler, emission system. Chassis Suspension Steering: Front suspension, rear suspension, front steering linkage/gear, steering pump, wheel, ABS/brakes. Body Exterior: Front bumper, grille, hood, front fender, cowl & dash, roof, sunroof, back window, quarter panel, quarter glass, luggage lid, front door, rear body, rear bumper, rear lamps, front lamps. Interior: Instrument panel, center console, front seat, rear seat, seat belts, interior trim (rocker/pillars/floor). Electrical HVAC: Front lamps, rear lamps, cruise control system, A/C refrigerant capacities, A/C heater/ventilation. (Note: Explicitly states 'NO WIRING' for electrical section.) Procedures Included Parts Identification: Detailed part numbers for all listed components. Labor Estimation: Estimated labor hours for various repair procedures. Parts Ordering: Facilitates ordering of correct replacement parts. Technical Depth Depth: Focuses on part identification and associated labor times, crucial for repair planning and parts procurement. Does not include detailed repair instructions or diagnostic procedures, but essential for their execution. 📊 Manual Specifications File Format Type: PDF Searchability: Likely searchable if properly OCR'd PDF, but text-based content is primary. Print Quality Quality: Dependent on source scan quality. Generally high for parts catalogs to ensure clarity of diagrams and part numbers. Binding Type Type: N/A (Digital format) Paper Type Type: N/A (Digital format) ⚙️ Engine Specifications Primary Engine Engine Code Family: Audi/VW EA827 (various inline-5 configurations) Displacement: Likely 2.3L (2309 cc) for most Coupe Quattro models of this era. Cylinder Configuration: Inline 5-cylinder Aspirated Induction: Naturally Aspirated (most common for this year/model) Performance Estimated Horsepower: Approximately 130-136 hp (depending on specific market and engine tune). Estimated Torque: Approximately 137-140 lb-ft (depending on specific market and engine tune). Fuel System Fuel Delivery: Bosch K-Jetronic or KE-Jetronic CIS-E Fuel Injection (common for this era). 🔧 Transmission Standard Type: 5-speed Manual Transaxle Optional Type: 3-speed or 4-speed Automatic Transaxle (less common for Quattro performance variants, but potentially available). Features Drivetrain: Permanent All-Wheel Drive (Quattro) Differential Locking: Likely featured a viscous coupling or electronically controlled center differential lock for improved traction. 📐 Dimensions Exterior Length: Approximately 4400 mm (173.2 inches) Width: Approximately 1700 mm (66.9 inches) Height: Approximately 1350 mm (53.1 inches) Wheelbase Wheelbase: Approximately 2500 mm (98.4 inches) Weights Curb Weight: Approximately 1300-1400 kg (2866-3086 lbs), varies with options. Gross Vehicle Weight Rating: Not specified, but would be listed on vehicle placard. 🛡️ Safety Features Ratings Crash Test Performance: No official NHTSA or Euro NCAP ratings available for this specific model/year. Safety features typical of the late 80s/early 90s. Active Features Braking System: Anti-lock Braking System (ABS) – likely standard on Quattro models. Stability Control: Not present (ESC was not common at this time). Passive Features Airbags: Driver's side airbag (likely optional or standard on later production runs of this generation). Seat Belts: Front 3-point inertia-reel seat belts, likely rear lap belts. Body Structure: Reinforced cabin structure, crumple zones. 💡 Technology Features Infotainment Audio System: Factory fitted AM/FM/Cassette stereo, possibly with optional CD player for later models. Speaker configuration would be detailed. Instrumentation: Analog gauges for speedometer, tachometer, fuel, coolant temperature, oil pressure. Warning lights for various systems. Driver Assistance Cruise Control: Optional or standard on some trims, a technologically advanced feature for the time. Connectivity Connectivity Features: N/A (No integrated Bluetooth, USB, or advanced connectivity typical of modern vehicles)....