🏷️ Basic Information Identification Make: BMW Model: 5-series Chassis Code: E34 Model Year: 1990 Product Type: Service and Repair Manual 👋 Introduction Market Position Class: Executive Sedan / Luxury Sports Sedan Target Audience: Affluent buyers seeking performance, luxury, and advanced engineering Competitive Analysis Key Competitors: Mercedes-Benz W124 E-Class, Audi V8 Quattro, Lexus LS 400 Key Features Driving Dynamics: Renowned for excellent handling, ride comfort, and driver engagement Build Quality: Exceptional build quality and German engineering Powertrain Options: Smooth inline-six engines, powerful V8 options (later in the generation) 📋 Manual Details Coverage Areas Coverage Scope: All models and all repairs A-Z Page Count Estimated Page Count: 1000+ Manual Type Type: Vehicle Specific Repair Manual Language Language: English Format Format: Digital (likely PDF, searchable) 📖 Manual Coverage Systems Covered Engine: Complete engine overhaul, diagnosis, repair, tuning Fuel System: Fuel injection systems (Motronic), fuel pumps, injectors, lines, tank Cooling System: Radiator, water pump, thermostat, hoses, fan, coolant specifications Exhaust System: Manifolds, catalytic converters, mufflers, pipes, emissions controls Transmission: Manual and automatic transmission repair, fluid changes, clutch service, driveshafts Brakes: Hydraulic system, ABS (Anti-lock Braking System), disc and drum brake overhaul, fluid specifications Suspension: Front and rear suspension components, struts, shocks, springs, control arms, bushings, alignment specifications Steering: Power steering system, steering rack, tie rods, linkage, fluid specifications Electrical System: Wiring diagrams, battery, alternator, starter, ignition system, lighting, accessories, fuses, relays Climate Control: HVAC system diagnosis and repair, refrigerant, components Body And Chassis: Body panel removal and installation, doors, windows, locks, hinges, chassis lubrication Interior: Seats, dashboard, trim panels, sound deadening Diagnostics: Troubleshooting charts, diagnostic trouble codes (DTCs), symptom-based repairs Procedures Included Maintenance: Scheduled maintenance, oil changes, filter replacements, fluid checks, brake checks, tune-ups Repair: Step-by-step repair instructions for all major vehicle systems Rebuilds: Complete engine and transmission rebuild procedures Installation: Component installation and removal procedures Troubleshooting: Extensive troubleshooting guides for common and complex issues Specifications: Torque specifications, clearances, measurements, tolerances Technical Depth Depth: Dealer-level technical information, suitable for professional technicians and advanced DIYers 📊 Manual Specifications File Format File Type: PDF Searchability: Searchable text for quick access to information Print Quality Resolution: High-resolution, clear diagrams and text Binding Type Binding: N/A (Digital) Paper Type Paper: N/A (Digital) ⚙️ Engine Specifications Primary Engine Engine Codes 1990: M20B25 (2.5L Inline-6), M30B35 (3.5L Inline-6) Displacement 2.5L: 2494 cc Bore 2.5L: 84 mm Stroke 2.5L: 75 mm Compression Ratio 2.5L: 8.5:1 Horsepower 2.5L: 168 hp @ 5800 rpm Torque 2.5L: 164 lb-ft @ 4750 rpm Displacement 3.5L: 3430 cc Bore 3.5L: 92 mm Stroke 3.5L: 86 mm Compression Ratio 3.5L: 8.8:1 Horsepower 3.5L: 208 hp @ 5700 rpm Torque 3.5L: 224 lb-ft @ 4000 rpm Performance Engine Management: Bosch Motronic electronic fuel injection and ignition Fuel System Fuel Type: Unleaded gasoline Fuel Octane Rating: 91 AKI (or higher recommended) 🔧 Transmission Standard Standard Transmission Type: 5-speed manual Getrag S5D 250G Optional Optional Transmission Type: 4-speed automatic ZF 4HP22 Features Automatic Transmission Features: Comfort and Sport modes 📐 Dimensions Exterior Wheelbase: 111.4 inches (2830 mm) Length: 191.1 inches (4855 mm) Width: 69.1 inches (1755 mm) Height: 55.9 inches (1420 mm) Weights Curb Weight 2.5L: 3461 lbs (1570 kg) Curb Weight 3.5L: 3583 lbs (1625 kg) 🛡️ Safety Features Ratings NHTSA Overall Rating: Not rated under modern NHTSA standards Active Features ABS: Standard Anti-lock Braking System (ABS) Passive Features Airbags: Driver's side airbag standard, passenger airbag optional/later models Seatbelts: Three-point inertia-reel seatbelts 💡 Technology Features Infotainment Audio System: Optional premium sound systems by Nakamichi or Harman Kardon, basic AM/FM/Cassette Driver Assistance Cruise Control: Standard cruise control Traction Control: Optional ASC (Automatic Stability Control) on some models Connectivity Features: Limited connectivity by modern standards; features include power accessories, central locking 🔧 Maintenance Service Intervals Oil Change Interval: Typically every 7,500-10,000 miles or annually, check owner's manual or service intervals specific to oil type Spark Plug Replacement: Refer to manual for specific engine and plug type (e.g., 30,000-60,000 miles) Coolant Flush: Every 2 years or 30,000 miles Transmission Fluid Change Auto: Typically every 50,000-100,000 miles, often considered 'lifetime' by BMW but periodic changes recommended for longevity Transmission Fluid Change Manual: Every 60,000-100,000 miles Fluid Specifications Engine Oil Viscosity: 5W-30, 5W-40, 10W-40 depending on climate and specific engine (check manual for precise recommendation, synthetic recommended) Engine Oil Type: API SG or higher, BMW Longlife-98 (LL-98) or equivalent Coolant Type: BMW Blue antifreeze (G48) or equivalent ethylene glycol-based coolant Brake Fluid Type: DOT 4 Power Steering Fluid Type: ATF Dexron II or equivalent Manual Transmission Fluid Type: API GL-4, 75W-90 or 80W-90 Automatic Transmission Fluid Type: ATF Dexron II (or III, check specific transmission) Known Issues Cooling System: Water pump failure, radiator leaks, plastic expansion tank cracking Engine Gaskets: Valve cover gasket leaks, oil pan gasket leaks Suspension: Control arm bushings wear, rear subframe mounting point cracking, shock absorber wear Electrical: Ignition coil...