🏷️ Basic Information Identification Make: BMW Models Covered: 3 Series (E30), 5 Series (E28, E34) Production Years Covered: 1981-1991 Codes E Code 3 Series: E30 E Code 5 Series Early: E28 E Code 5 Series Late: E34 👋 Introduction Market Position Era Significance: The E30 3 Series and E28/E34 5 Series represent a golden era for BMW, known for their excellent driving dynamics, build quality, and sporty appeal. Competitive Analysis Competitors: Direct competitors included Mercedes-Benz W201 (190E) and W124 (E-Class), Audi 80/90, and various performance sedans from other European and Japanese manufacturers. Key Features Driving Experience: Renowned for their balance, rear-wheel-drive chassis, responsive steering, and refined inline-six engines. Design Philosophy: Emphasized driver-centric ergonomics, robust construction, and a timeless aesthetic. 📋 Manual Details Coverage Areas Engine Types: 4-cylinder, 6-cylinder gasoline engines Chassis Systems: Suspension, steering, brakes, bodywork, interior Electrical Systems: Engine management, lighting, instrumentation, comfort systems, wiring diagrams Page Count Estimated Pages: 1000+ Manual Type Type: Factory-authorized Service Manual / Repair Manual Language Language: English Format Format: Digital (PDF) / Printable 📖 Manual Coverage Systems Covered Engine Overhaul: Complete engine disassembly, inspection, repair, and reassembly for various inline-4 and inline-6 configurations. Fuel And Emission Controls: Bosch L-Jetronic, Motronic fuel injection systems, emission control systems, troubleshooting procedures. Cooling System: Radiator, water pump, thermostat, fan clutch, coolant specifications, bleeding procedures. Lubrication System: Oil pump, oil filter, oil cooler (if applicable), oil specifications, change intervals. Transmission And Drivetrain: Manual and automatic transmission repair, clutch, driveshafts, differential, axle seals. Suspension And Steering: Front and rear suspension components (struts, control arms, bushings), power steering system, steering rack, alignment procedures. Brakes: Disc brake systems (front and rear), ABS (where applicable), brake fluid specifications, bleeding procedures, caliper and rotor replacement. Electrical Diagnostics: Comprehensive wiring diagrams, fuse box layouts, relay functions, troubleshooting charts for electrical faults. Body And Interior: Body panel removal and installation, door mechanisms, window regulators, seat adjustments, trim components. Procedures Included Routine Maintenance: Oil and filter changes, spark plug replacement, air filter service, fuel filter replacement, drive belt inspection and replacement. Troubleshooting: Diagnostic procedures for common starting, running, and electrical issues using symptoms and test results. Component Replacement: Detailed instructions for replacing virtually all mechanical and electrical components. Adjustments: Carburetor (where applicable), ignition timing, idle speed, parking brake adjustments. Diagnostic Testing: Procedures for testing sensors, actuators, and control modules using multimeters and oscilloscopes. Technical Depth Diagnostic Capabilities: Advanced diagnostic information for engine control units (ECUs) and ABS systems, including fault code interpretation. Rebuild Procedures: Comprehensive engine rebuild procedures with specifications for clearances, torque values, and component tolerances. Wiring Diagram Detail: High-resolution, detailed wiring diagrams for all vehicle systems, including color coding and component locations. Special Tool Requirements: Identification and usage instructions for specialized BMW tools required for certain repair procedures. 📊 Manual Specifications File Format Format Details: Searchable PDF format, optimized for digital viewing and printing. Print Quality Print Quality: High-resolution images, diagrams, and text, ensuring clarity when printed. Binding Type Binding Type: N/A (Digital Format) Paper Type Paper Type: N/A (Digital Format) ⚙️ Engine Specifications Primary Engine Common Engines E30: M10 (4-cylinder: 1.8L, 2.0L, 2.3L) and M20 (6-cylinder: 2.3L, 2.5L, 2.7L) Common Engines E28: M20 (6-cylinder: 2.3L, 2.7L), M30 (6-cylinder: 2.8L, 3.2L, 3.5L) Common Engines E34: M20 (6-cylinder: 2.0L, 2.5L), M30 (6-cylinder: 3.0L, 3.5L), M50 (6-cylinder: 2.0L, 2.5L, 3.0L, 3.5L) Performance Typical Horsepower Range: 90 HP (4-cyl) to 315 HP (M5/E34 V8 variations - though manual covers inline-6 primarily) Typical Torque Range: 140 Nm (4-cyl) to 400 Nm (M5/E34 V8 variations) Fuel System Fuel Injection Systems: Bosch L-Jetronic, LE-Jetronic, Motronic ML/ME variants Fuel Type: Unleaded Gasoline (Octane rating varies by engine, typically 91-98 RON) 🔧 Transmission Standard E30 Standard Transmission: Getrag 260 5-speed manual transmission E28 E34 Standard Transmission: Getrag 260 or 265 5-speed manual transmission Optional Automatic Transmission Options: ZF 3HP22 (E28), ZF 4HP22 (E34), Getrag 4-speed automatic (some E30) Features Clutch Type: Single dry plate, hydraulically operated clutch Transmission Fluid: ATF Dexron II (automatics), GL-4 gear oil (manuals) - specific viscosity varies by model and transmission type. 📐 Dimensions Exterior E30 Length: Approx. 4325 mm (170.3 in) E34 Length: Approx. 4720 mm (185.8 in) for Sedan, 4820 mm (189.8 in) for Touring Wheelbase E30: Approx. 2570 mm (101.2 in) Wheelbase E34: Approx. 2790 mm (110.0 in) Weights Curb Weight E30: Approx. 1100-1300 kg (2425-2866 lbs) Curb Weight E34: Approx. 1350-1550 kg (2976-3417 lbs) 🛡️ Safety Features Ratings Crash Test Data: Limited formal crash test data available for this era compared to modern standards. Focus on robust construction and driver-focused safety features of the time. Active Features ABS: Optional on many models, standard on higher performance variants (e.g., M3, M5). Traction Control: Rarely available, typically only on later high-performance models (e.g., early ASC on some E34s). Passive Features Seatbelts: 3-point inertia reel seatbelts standard, optional seatbelt pre-tensioners on some later models. Airbags: Driver's airbag...