🏷️ Basic Information Identification Make: BMW Model: 8 Series (E31) Model Designation: 840i, 850i Chassis Code: E31 Product Name: BMW 840i 850i E31 With 4.0L 5.0L 5.4L Engines Complete Workshop Service Repair Manual 1994 1995 1996 1997 1998 1999 👋 Introduction Market Position Positioning: Luxury Grand Tourer, positioned as a premium, high-performance coupe and convertible Competitive Analysis Competitors: Porsche 911, Mercedes-Benz SL-Class, Jaguar XJS Key Features Design: Iconic Bangle-era design, shark-nose front, hidden headlights, pillarless coupe profile Performance Engines: Powerful V8 and V12 engines offering refined performance Driving Dynamics: Balanced chassis, sophisticated suspension for comfortable yet engaging driving 📋 Manual Details Coverage Areas Covered Years: 1994, 1995, 1996, 1997, 1998, 1999 Covered Models: All 840i, 850i E31 variants Covered Engines: 4.0L V8 (M60B40), 5.0L V12 (M70B50), 5.4L V12 (M73B54) Covered Transmissions: All transmission types (e.g., 5-speed automatic, 6-speed manual) Coverage Scope: Complete Workshop Service Repair Page Count Estimated Page Count: Extensive (Full Workshop Manual) Manual Type Manual Type: Workshop Service Repair Manual Language Language: English Format Format: Downloadable Digital File (PDF) 📖 Manual Coverage Systems Covered Engine Mechanical: Engine assembly, disassembly, cylinder head, pistons, crankshaft, camshafts, timing, lubrication system, cooling system Engine Management: Fuel injection (DME), ignition system, emissions control (ASC, catalytic converters), sensors, actuators Transmission Manual: Clutch, gearbox operation, overhaul, maintenance Transmission Automatic: Transmission control module (EGS), hydraulic systems, torque converter, overhaul, maintenance Drivetrain: Driveshafts, universal joints, differential, rear axle assembly Suspension: Front and rear suspension systems, shock absorbers, springs, control arms, bushings Steering: Power steering system, steering rack, column, alignment Brakes: Hydraulic system, ABS (Anti-lock Braking System), DSC (Dynamic Stability Control), brake calipers, pads, rotors, parking brake Electrical System: Battery, alternator, starter, wiring diagrams, lighting system, fuses, relays Body And Chassis: Body panels, doors, hood, trunk, interior trim, chassis components, rust prevention Climate Control: HVAC system, air conditioning, heating, climate control module Infotainment And Electronics: Radio, navigation system, power windows, central locking, mirrors Procedures Included Maintenance: Oil changes, filter replacements, fluid checks, spark plug replacement, belt inspection/replacement, brake fluid flush Diagnostics: Troubleshooting guides, fault code identification, symptom analysis Repair: Component disassembly, repair, and reassembly for all covered systems Rebuilds: Detailed instructions for engine and transmission overhauls Adjustments: Valve adjustments (if applicable), idle speed settings, parking brake adjustments Installation: Component installation and replacement procedures Wiring Diagrams: Comprehensive electrical circuit diagrams for all vehicle systems Technical Depth Depth: Comprehensive (A-Z coverage), suitable for professional technicians and advanced DIY enthusiasts 📊 Manual Specifications File Format File Type: PDF Searchability: Searchable text content Print Quality Printability: Printable pages, chapters, or entire manual Binding Type Binding Type: N/A (Digital Download) Paper Type Paper Type: N/A (Digital Download) Software Requirements Required Software: Adobe Reader (or compatible PDF viewer) ⚙️ Engine Specifications Primary Engine Engine 840I 4.0L: 4.0L (3982cc) SOHC V8 (M60B40) Engine 850I 5.0L: 5.0L (4988cc) SOHC V12 (M70B50) Engine 850I 5.4L: 5.4L (5379cc) SOHC V12 (M73B54) Performance Horsepower 840I 4.0L: Approx. 282 hp @ 5800 rpm Torque 840I 4.0L: Approx. 295 lb-ft @ 4500 rpm Horsepower 850I 5.0L: Approx. 296 hp @ 5200 rpm Torque 850I 5.0L: Approx. 332 lb-ft @ 4100 rpm Horsepower 850I 5.4L: Approx. 322 hp @ 5000 rpm Torque 850I 5.4L: Approx. 361 lb-ft @ 3900 rpm Fuel System Fuel Delivery 4.0L: Bosch Motronic DME engine management with multi-point fuel injection Fuel Delivery 5.0L 5.4L: Bosch Motronic DME engine management with multi-point fuel injection Fuel Type: Premium Unleaded Gasoline (91 octane or higher) 🔧 Transmission Standard Standard Transmission 840I: 5-speed Steptronic Automatic Transmission Standard Transmission 850I: 4-speed automatic transmission (e.g., GM 4L30-E for early models, later with 5-speed Steptronic) Optional Optional Transmission 840I: 6-speed Manual Transmission (Rare) Optional Transmission 850I: 6-speed Manual Transmission Features Steptronic: Manual shifting mode for automatic transmissions 📐 Dimensions Exterior Length: Approx. 192.4 inches (4887 mm) Width: Approx. 71.7 inches (1821 mm) Height: Approx. 51.3 inches (1303 mm) Wheelbase: Approx. 106.3 inches (2700 mm) Weights Curb Weight 840I: Approx. 3700-3900 lbs (1678-1769 kg) Curb Weight 850I: Approx. 4100-4500 lbs (1859-2041 kg) 🛡️ Safety Features Ratings Safety Ratings: Not officially rated by modern agencies, but built to high standards for its era Active Features ABS: Standard Anti-lock Braking System (ABS) Asc: Optional Automatic Stability Control (ASC) Dsc: Later models may feature Dynamic Stability Control (DSC) Passive Features Airbags: Driver and passenger airbags Structure: Reinforced chassis, crumple zones 💡 Technology Features Infotainment Audio System: Optional premium sound systems, e.g., Harman Kardon Navigation: Early BMW navigation systems (e.g., on-board monitor) were available Driver Assistance Stability Control: ASC and later DSC systems offered traction and stability management Connectivity Connectivity Features: Limited by modern standards; primarily focused on in-car entertainment and basic vehicle functions Convenience Features Power Features: Power windows, power seats, power mirrors, power sunroof (where equipped) 🔧 Maintenance Service Intervals Oil Change Interval: Typically every 7,500-10,000 miles or 12-18 months, refer to specific manual recommendations Coolant Flush: Every...