🏷️ Basic Information Identification Make: BMW Model: 8 Series Model Code: E31 Year: 1990 Codes Chassis Code: E31 👋 Introduction Market Position Positioning: Flagship luxury grand tourer, positioned as a high-performance, technologically advanced coupe and convertible Competitive Analysis Competitors: Porsche 928, Jaguar XJS, Mercedes-Benz SEC models, Aston Martin DB7 (later models) Key Features Design: Iconic long hood, short deck, shark-nose styling, pop-up headlights, CSL-inspired rear C-pillar Performance Orientation: Focus on smooth, powerful acceleration and stable high-speed cruising Manual Value Proposition Value: Essential resource for maintaining and repairing the complex systems of the E31 8 Series, enabling owners and independent specialists to perform dealer-level service 📋 Manual Details Coverage Areas Coverage Scope: Complete workshop service and repair Specific Areas: Engine, Drivetrain, Chassis, Suspension, Brakes, Electrical Systems, HVAC, Bodywork, Diagnostic Procedures, Maintenance, Troubleshooting Page Count Estimated Page Count: Approximately 1500-2000 pages (typical for full factory manual) Manual Type Type: Factory Service Repair Manual Language Language: English Format Format: Print or Digital (e.g., PDF, CD-ROM - depends on specific product offering) 📖 Manual Coverage Systems Covered Engine: V8 M60B30 (3.0L), V8 M60B40 (4.0L) - including fuel injection, ignition, emissions, cooling, lubrication Drivetrain: Rear-wheel drive, Automatic Transmission (e.g., 4HP24, 5HP30), Manual Transmission (e.g., Getrag 6-speed on some variants), Differential, Driveshafts, Axles Chassis: Front and Rear Suspension (MacPherson struts front, multi-link rear), Steering System (Hydraulic power steering), Brakes (ABS, ventilated discs front/rear) Electrical: Full wiring diagrams, ECU operation, sensor diagnostics, lighting, power windows, central locking, sunroof, audio systems, instrument cluster, EML (Engine Management Light) troubleshooting HVAC: Automatic climate control system, A/C compressor, blower motor, climate control module diagnostics Bodywork: Body panel removal and installation, door mechanisms, hood and trunk operation, bumper assemblies, glass replacement Procedures Included Maintenance: Oil changes, filter replacements, spark plug service, coolant flushes, brake fluid changes, belt inspections/replacement Repair: Engine component rebuilds (e.g., cylinder head removal, piston replacement), transmission overhaul, suspension component replacement, brake caliper rebuild, electrical component repair/replacement Diagnostics: Step-by-step troubleshooting guides for common and uncommon issues, diagnostic trouble code (DTC) interpretation, electrical testing procedures, fuel system pressure testing Technical Depth Depth: Comprehensive, from basic maintenance to complete engine and transmission overhauls, including detailed diagnostic trees and wiring schematics 📊 Manual Specifications File Format Digital Format Details: Searchable text, hyperlinked sections, high-resolution diagrams (if PDF) Print Quality Print Quality: Professional printing, clear diagrams, durable paper (if printed version) Binding Type Binding: Professionally bound (e.g., spiral, perfect bound) for workshop durability (if printed version) Paper Type Paper Quality: Heavy-duty, smudge-resistant paper suitable for workshop environments (if printed version) ⚙️ Engine Specifications Primary Engine Engine Options 1990: M60B30 (3.0-liter V8) and M60B40 (4.0-liter V8) Performance M60B30 Horsepower: Approx. 215 hp @ 5800 rpm M60B30 Torque: Approx. 290 Nm (214 lb-ft) @ 4500 rpm M60B40 Horsepower: Approx. 282 hp @ 5800 rpm M60B40 Torque: Approx. 400 Nm (295 lb-ft) @ 4500 rpm Fuel System Fuel Delivery: Bosch Motronic Electronic Fuel Injection (EFI) Engine Layout Configuration: V8, 90-degree cylinder banks Engine Management ECU System: Bosch Motronic M3.3 (or similar, depending on specific variant) Cooling System Type: Pressurized liquid-cooled 🔧 Transmission Standard Transmission 1990 Model: 4-speed Automatic (e.g., ZF 4HP24) Optional Manual Transmission Availability: Optional on some markets/variants, typically a 6-speed Getrag unit (e.g., Getrag 420G on later models, potentially a 6-speed option on 4.0L in some regions) Features Automatic Features: Electronic shift control, Sport mode Fluid Specifications Automatic Transmission Fluid: BMW ATF Dexron II (or equivalent, consult manual for exact spec) 📐 Dimensions Exterior Length: Approx. 4775 mm (188.0 in) Width: Approx. 1855 mm (73.0 in) Height: Approx. 1300 mm (51.2 in) Wheelbase: Approx. 2633 mm (103.7 in) Weights Curb Weight: Approx. 1700-1800 kg (3750-3970 lbs) 🛡️ Safety Features Ratings Crash Test Data: Limited public data available for 1990 models; designed to meet contemporary safety standards Active Features ABS: Standard Anti-lock Braking System (ABS) Traction Control: Optional ASC (Automatic Stability Control) or ASC+T on later models/variants Passive Features Airbags: Driver airbag standard, passenger airbag optional or standard on later variants Seatbelts: Pretensioning front seatbelts 💡 Technology Features Infotainment Audio System: BMW Bavaria C Reverse or Professional RDS cassette radio, optional CD changer Navigation: Early factory navigation systems available on select models (e.g., BMW On-Board Computer with Navigation) Driver Assistance Cruise Control: Standard electronic cruise control Parking Sensors: Not typically available for 1990 model year Connectivity Phone Integration: Optional car phone integration systems available on some models 🔧 Maintenance Service Intervals Oil Change Interval: Typically 10,000-15,000 miles or 12-24 months (synthetic oil) Spark Plug Replacement: Approx. 60,000 miles (depending on plug type) Coolant Flush: Every 2 years or 30,000 miles Fluid Specifications Engine Oil Type: BMW High Performance Synthetic Engine Oil (e.g., 5W-30 or 5W-40, consult manual for specific viscosity) Engine Oil Capacity: Approx. 7.5 liters (7.9 US quarts) for M60B40 Coolant Type: BMW Blue Antifreeze/Coolant (G48 ethylene glycol based) Brake Fluid Type: DOT 4 Known...