🏷️ Basic Information Identification Make: BMW Model: 3 Series Chassis Code: E30 Specific Model Variant: 320i Model Years Covered: 1987-1991 Codes Engine Code General: M20 👋 Introduction Market Position Vehicle Market Segment: Compact Executive Sedan/Coupe/Convertible Competitive Analysis Key Competitors: Mercedes-Benz W201 190E, Audi 80/90, Volvo 240, Alfa Romeo 75 Key Features Vehicle Design Philosophy: Focus on driving dynamics, build quality, and a sportier executive image compared to competitors Manual Value Proposition: Provides in-depth, factory-level repair information, crucial for maintaining and restoring these classic BMWs, offering a significant cost saving over dealership servicing. Manual Quality Statement: Distinguishes itself from incomplete or low-quality manuals by offering comprehensive, verified factory-level procedures, ensuring accuracy and completeness for DIY mechanics and professional technicians alike. 📋 Manual Details Coverage Areas Manual Coverage Scope: Comprehensive service, repair, and workshop procedures Page Count Estimated Page Count: Over 500 pages (typical for this era's comprehensive manuals) Manual Type Manual Classification: Workshop Service Repair Manual Language Manual Language: English Format Manual Format: Digital (likely PDF) 📖 Manual Coverage Systems Covered Engine Systems: Engine mechanicals, fuel injection (Bosch Motronic), ignition system, cooling system, lubrication system, exhaust system Transmission Systems: Manual and automatic transmission service, overhaul, and adjustments Drivetrain Systems: Clutch, driveshafts, differential, rear axle assembly Suspension Steering Brakes: Front and rear suspension components, steering system, hydraulic brake system (ABS coverage if applicable), parking brake Electrical Systems: Wiring diagrams, starter, alternator, battery, lighting system, instrument cluster, electronic control units (ECU), diagnostics Body Interior HVAC: Body panels, doors, windows, locks, interior trim, heating, ventilation, and air conditioning (HVAC) system Procedures Included Routine Maintenance: Oil changes, filter replacements, spark plug service, belt tensioning, fluid checks and changes, brake pad replacement Diagnostic Troubleshooting: Systematic troubleshooting guides, fault code interpretation (where applicable), diagnostic connector usage Component Repair Overhaul: Engine rebuild procedures, transmission overhaul, brake caliper rebuild, suspension component replacement Electrical Diagnostics Repair: Wiring harness repair, component testing, sensor replacement, ECU diagnostics Body And Trim: Panel alignment, door mechanism repair, glass replacement, interior trim panel removal and installation Technical Depth Depth Of Coverage: Detailed mechanical and electrical repair procedures, diagnostic strategies, specifications, torque values, and schematics 📊 Manual Specifications File Format Digital File Type: PDF (Searchable Text Preferred) Print Quality Digital Image Resolution: High resolution for clear diagrams and text Binding Type Digital Format Advantage: No binding; easily searchable and printable Paper Type Digital Format Equivalent: N/A (Digital) - Equivalent to high-quality technical paper if printed ⚙️ Engine Specifications Primary Engine Engine Family: BMW M20 Inline-6 Engine Displacement: 2.0 Liters (1990 cc) Engine Configuration: Inline 6-cylinder, SOHC (Single Overhead Camshaft) Performance Horsepower Rating: Approximately 125-129 hp (DIN) depending on exact market and tune Torque Rating: Approximately 175-180 Nm (129-133 lb-ft) at around 4300 rpm Fuel System Fuel Delivery: Bosch LE-Jetronic or Motronic fuel injection (depending on specific year and market) Fuel Type Requirement: Unleaded Premium Gasoline (Octane rating dependent on market) Engine Management ECU Type: Bosch Motronic (specific variant varies) 🔧 Transmission Standard Standard Transmission Type: Getrag 260 5-speed Manual Transmission Optional Optional Transmission Type: ZF 4HP22 4-speed Automatic Transmission Features Clutch Type: Hydraulically actuated single dry plate clutch 📐 Dimensions Exterior Body Styles Offered: 2-door Sedan, 4-door Sedan, Convertible, (rarely) Touring Wagon (E30 Touring not primarily in US market) Wheelbase Sedan: Approx. 2621 mm (103.2 in) Length Sedan: Approx. 4340 mm (170.9 in) Weights Curb Weight Sedan Manual: Approx. 1250 kg (2755 lbs) 🛡️ Safety Features Ratings Crash Test Information Era: Older vehicle, formal crash ratings from this era are less comprehensive than modern standards. Known for robust build quality of its time. Active Features Optional ABS: Anti-lock Braking System (ABS) available on later models and certain trims Passive Features Standard Safety Features: Seat belts, reinforced passenger cell, energy-absorbing steering column 💡 Technology Features Infotainment Infotainment System Era: Basic for its time: Analog gauges, optional cassette/radio units. No advanced infotainment systems. Driver Assistance Available Driver Aids: ABS (Anti-lock Braking System) was the primary electronic driver assistance feature available. Connectivity Connectivity Features: None by modern standards (e.g., no Bluetooth, USB, or Wi-Fi). Basic antenna for radio. 🔧 Maintenance Service Intervals Oil Change Interval: Typically every 10,000-15,000 km (6,000-10,000 miles) or annually, whichever comes first (refer to manual for exact spec) Transmission Fluid Change: Manual: Every 60,000-80,000 km (40,000-50,000 miles); Automatic: Every 40,000-60,000 km (25,000-40,000 miles) (refer to manual) Coolant Flush: Every 2-3 years or as specified in manual Fluid Specifications Engine Oil Type Grade: Refer to manual, typically synthetic or semi-synthetic 5W-40 or 10W-40 depending on climate Coolant Type: BMW Blue Ethylene Glycol based coolant or equivalent Brake Fluid Type: DOT 4 Manual Transmission Fluid Spec: Refer to manual for specific GL-4 or GL-5 gear oil specification Automatic Transmission Fluid Spec: Refer to manual for specific ZF fluid type (e.g., LT-2 or equivalent) Known Issues Common Wear Items: Fuel pump, fuel injectors, fuel pressure regulator, coolant hoses,...