🏷️ Basic Information Identification Make: BMW Model: 3-series Chassis Code: E21 Model Year: 1984 👋 Introduction Market Position Positioning: This manual positions itself as the authoritative, dealership-equivalent resource for BMW 3-series (E21) owners and technicians, emphasizing its specificity and completeness over generic guides. Competitive Analysis Value Proposition: Offers superior value by providing vehicle-specific factory information, eliminating the need for multiple generic repair books, and delivering convenience through a digital, searchable, and printable format. Key Features Features: Vehicle-specific, factory-accurate, comprehensive A-Z coverage, step-by-step instructions, diagrams, illustrations, wiring schematics, printable pages, digital format for easy access and storage. 📋 Manual Details Coverage Areas Vehicle Coverage: All models and all repairs A-Z for the 1984 BMW 3-series (E21) Page Count Estimated Page Count: Estimated 1000+ pages (typical for comprehensive factory service manuals of this era) Manual Type Type: Service and Repair Manual Language Language: English Format Format: PDF 📖 Manual Coverage Systems Covered Engine Mechanical: Complete engine overhaul, internal components, cylinder head, block, pistons, crankshaft, camshaft, timing components. Engine Control System: Fuel injection systems (Bosch L-Jetronic/Motronic where applicable), ignition system, sensors, actuators, diagnostics. Fuel System: Fuel pump, fuel injectors, fuel lines, fuel tank, fuel pressure regulator, fuel filter replacement and servicing. Emission Control: Emission control systems, catalytic converter, EGR (if equipped), evaporative emission control, diagnosis and repair. Cooling System: Radiator, water pump, thermostat, cooling fan, coolant hoses, coolant specifications and flushing procedures. Lubrication System: Oil pump, oil filter, oil pan, oil pressure specifications, oil change intervals, fluid specifications. Ignition Starting Charging: Spark plugs, ignition coil, distributor (if applicable), starter motor, alternator, battery testing and replacement. Automatic Transmission: Automatic transmission servicing, fluid checks, adjustments, repair procedures, torque converter. Manual Transmission: Manual transmission servicing, clutch replacement, gear linkage adjustments, internal repairs, fluid specifications. Drivetrain: Clutch, driveshaft, universal joints, differential, axle shafts, wheel bearings. Suspension: Front suspension (struts, control arms, ball joints), rear suspension (trailing arms, shock absorbers, bushings), alignment specifications. Wheels Tires: Tire pressure, wheel balancing, wheel alignment, wheel bolt pattern, tire size specifications. Brake System: Front and rear disc brakes, brake pads, brake rotors, brake calipers, brake fluid, bleeding procedures, master cylinder, brake lines. Parking Brake: Parking brake mechanism, adjustment, cable replacement. Steering: Steering column, steering gear (rack and pinion), power steering system (if equipped), steering fluid, troubleshooting. Climate Control: Air conditioning system, heater core, blower motor, climate control panel, refrigerant types, servicing procedures. Restraint Systems: Seat belts, seat belt retractors, potential SRS system components (though less common in E21). Body Electrical: Interior and exterior lighting, door locks, power windows (if equipped), mirrors, wipers, washers, horn, instrument panel illumination. Body Panels: Hood, doors, trunk lid, fenders, bumpers, hinges, latches, panel alignment, rust repair. Glass Mirrors: Windshield, side glass, rear glass, mirror replacement and adjustment. Interior Trim: Seats, dashboard, door panels, headliner, carpet, interior component removal and installation. Wiring Schematics: Comprehensive electrical wiring diagrams for all vehicle systems. Procedures Included Maintenance Procedures: Regular scheduled maintenance, oil changes, filter replacements, fluid checks and top-offs, tune-ups. Troubleshooting Guides: Diagnostic charts and symptom-based troubleshooting for common issues. Repair Procedures: Step-by-step instructions for all mechanical and electrical component repairs and replacements. Diagnosis: Procedures for diagnosing faults in engine, transmission, braking, electrical, and other systems. Technical Depth Depth: Factory-level technical depth, suitable for both DIY enthusiasts and professional technicians. Covers basic maintenance to complete engine and transmission rebuilds. 📊 Manual Specifications File Format File Format Details: Adobe PDF, compatible with most operating systems including Windows (Vista32/64, XP, ME, 98, NT, 2000) and macOS. Requires free Adobe PDF Reader. Print Quality Printability: All pages are printable. Ability to enlarge images for detailed viewing and printing. Binding Type Binding: Digital (PDF), offering convenience over traditional bound manuals. No physical binding to degrade. Paper Type Paper Type: N/A (Digital format) ⚙️ Engine Specifications Primary Engine Engine Options 1984: While the E21 platform spanned multiple engine options (e.g., 315, 316, 318, 320i, 323i), the manual covers all relevant engines for 1984. Common engines include the M10 series (e.g., 1.8L, 2.0L) and M20 series (e.g., 2.3L inline-six). Performance Performance Variations: Performance figures varied by engine. For example, the 323i typically featured a 2.3L M20B23 inline-six producing around 143 hp (107 kW) and 190 Nm (140 lb-ft) of torque. The manual will detail specific outputs for each variant. Fuel System Fuel Delivery: Primarily fuel injection (Bosch L-Jetronic or Motronic) on models like the 320i and 323i, with carbureted options on lower-end models. Manual covers both fuel delivery systems. 🔧 Transmission Standard Transmission Standard Transmission Type: Typically a 4-speed or 5-speed manual transmission (e.g., Getrag 245) depending on the model and market. Optional Transmission Optional Transmission Type: A 3-speed or 4-speed ZF automatic transmission was often available as an option. Features Transmission Features: Manual covers clutch operation, flywheel, gearbox overhaul, gear linkage, shift mechanism, and automatic transmission fluid type and capacity. 📐 Dimensions Exterior Wheelbase: Approximately 2565...