🏷️ Basic Information Identification Make: Audi Model: 80/90 Production Years Covered: 1988-1993 👋 Introduction Market Position Target Audience: Audi owners, DIY mechanics, automotive repair shops Competitive Analysis Manual Completeness: Most completed and official factory manual for the specified years. Key Features Key Selling Points: Instant download, comprehensive coverage, printable, searchable 📋 Manual Details Coverage All Models Covered: Yes Format Format: PDF Language Language: English Delivery Delivery Method: Instant Download Printability Printable: Yes Searchability Searchable: Fully Searchable Compatibility Operating Systems: Windows and Mac Requirements Required Software: Adobe PDF Reader and/or WinRar 📖 Manual Coverage Systems General Information: Included Accessories And Equipment: Included Audio Visual Telematics: Included Brakes: Included Driveline Axle: Included Electrical System: Included Lighting System: Included Restraint Systems: Included Steering System: Included Suspension System: Included Body Frame Interior Exterior: Included Mechanical Engine: Included Transmission Systems: Included Tires And Wheels: Included HVAC System: Included Wiring Diagrams: Included Fuel System Diagnostics: Covers fuel pump testing, injector diagnostics, and fuel pressure testing procedures. Procedures Maintenance Procedures: Included Troubleshooting Guides: Included Repair Instructions: Included Diagnostic Procedures: Included Component Replacement: Included Suspension Alignment Specs: Detailed specifications for wheel alignment (camber, caster, toe) and adjustment procedures. Body Repair Techniques: Guidance on body panel repair, rust prevention, and interior trim removal/installation. Technical Depth Depth: Full Factory Service and Repair Engine Rebuilding: Includes detailed procedures for engine disassembly, inspection, repair, and reassembly, including specifications for piston ring gaps, bearing clearances, and valve timing. Transmission Overhaul: Procedures for manual and automatic transmission removal, disassembly, component replacement, and reassembly, including torque specs and fluid capacities. Electrical Diagnostics: In-depth diagnostic trees, component testing procedures, and troubleshooting guides for all electrical circuits. 📊 Manual Specifications File Details File Type: PDF Print Quality Printability: High-quality for clear printing Binding Type Binding: N/A (Digital Download) Paper Type Paper Type: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Engine Variants Covered: Likely includes 1.6L, 1.8L, 2.0L, 2.2L, 2.3L (5-cylinder) and potentially diesel variants. Specifics TBD within manual. Performance Power Output Range: Typically 70-130 hp depending on engine and trim. Specific figures will be in the manual. Fuel System Fuel Delivery: Includes details on Carburetor (early models) and Fuel Injection (K-Jetronic, KE-Jetronic, Motronic) systems. Engine Codes Common Engine Codes: Examples: JN (1.8L), PM (1.8L), HP (2.0L), 3B (2.2L Turbo), NG (2.3L 5-cyl). Manual will list all specific codes. 🔧 Transmission Standard Standard Transmission: Manual transmission (e.g., 5-speed) is common. Optional Optional Transmission: Automatic transmission (e.g., 3-speed or 4-speed automatic) is typically available. Features Transmission Fluid Specifications: Manuals will specify required ATF types (e.g., G009, G052) and capacities. Automatic transmissions will have specific fluid types (e.g., Dexron). 📐 Dimensions Exterior Body Styles: Sedan (4-door), Coupe (2-door), Avant (Wagon). Weights Curb Weight Range: Approx. 1100-1300 kg depending on configuration. 🛡️ Safety Features Ratings Safety Standards: Information on passive safety features and potentially crashworthiness based on period standards. Active Features Braking System Details: Covers front disc and rear drum or disc brakes, ABS systems where applicable. Passive Features Seatbelt Information: Details on seatbelt systems and pre-tensioners if equipped. 💡 Technology Features Infotainment Audio System Coverage: Information on factory radio systems, speaker configurations, and potential upgrade paths. Driver Assistance ABS System Coverage: Details on ABS operation, diagnostics, and component replacement if equipped. Connectivity Wiring Diagram Detail: Comprehensive wiring diagrams for all electrical systems, essential for troubleshooting complex issues. 🔧 Maintenance Service Intervals Oil Change Interval: Typically every 10,000-15,000 km or 12 months, depending on driving conditions and oil used. Manual will provide precise intervals. Timing Belt Replacement: Crucial interval, typically around 60,000-100,000 km for most engine variants. Manual will specify exact mileage and procedure. Fluid Specifications Engine Oil Specification: Likely 5W-40, 10W-40, or 5W-30 synthetic or semi-synthetic oils conforming to VW/Audi specifications (e.g., VW 500.00, VW 502.00). Manual will confirm. Coolant Specification: G11 (blue/green) or G12 (pink) coolant mixtures. Manual will specify type and dilution ratio. Brake Fluid Specification: DOT 3 or DOT 4 brake fluid. Manual will confirm precise type. Power Steering Fluid: Specific power steering fluid type as per Audi specifications. Known Issues Common Wear Items: Front suspension components (ball joints, control arms), fuel pump, ignition components (distributor, spark plugs), climate control actuators, potential for electrical gremlins. Corrosion Prone Areas: Wheel arches, rocker panels, around window seals, and rear boot lid. Technical Specifications Tire Pressure Recommendations: Specific pressures for front and rear tires based on load, listed in the manual and on door jamb sticker. Wheel Bolt Pattern: Typically 4x108 Brake Pad Replacement Procedure: Detailed step-by-step instructions including caliper retraction and torque specifications. Spark Plug Gap: Specific gap requirements will be detailed for each engine variant. Torque Specifications: Comprehensive list of torque values for critical fasteners (engine, suspension, brakes, wheels). 📚 Vehicle History Brand Heritage Audi History Context: The Audi 80/90 (B3 and B4 generations) represented a significant step forward for Audi in terms of design and technology,...