🏷️ Basic Information Identification Make: BMW Model: 3-Series Model Code: E30 Specific Model: 320i Generation Model Years: 1987-1991 Codes Chassis Code: E30 👋 Introduction Market Position Positioning: The BMW E30 3-Series is a highly regarded compact executive car, known for its sporty handling, build quality, and timeless design. The 320i was a popular model in many markets, offering a balance of performance and economy. This manual serves enthusiasts and professional mechanics seeking to maintain or restore these iconic vehicles. Competitive Analysis Competitors: Competed with vehicles such as the Mercedes-Benz W201 (190E), Audi 80/90, Alfa Romeo 75, and Ford Sierra. Key Features Highlights: Rear-wheel drive platform, engaging driving dynamics, robust inline-six engine, durable construction, classic BMW design cues. Manual Value Proposition Value: Provides comprehensive, accurate information essential for maintaining the reliability and performance of the BMW E30 320i, empowering owners to perform complex repairs and diagnostics themselves, saving on dealership service costs. 📋 Manual Details Coverage Areas Primary Coverage: Service, Maintenance, Repair, Troubleshooting Page Count Estimated Pages: 1500+ Manual Type Type: Full Service and Repair Manual Language Language: English Format Format: Digital (PDF) 📖 Manual Coverage Systems Covered Engine: M20B20 Engine (2.0L Inline-6), Fuel Injection System (Bosch Motronic), Ignition System, Cooling System, Exhaust System Transmission: Getrag 260 5-Speed Manual Transmission, ZF 4HP22 4-Speed Automatic Transmission, Clutch System, Driveshaft, Differential Brakes: Front Ventilated Discs, Rear Solid Discs, ABS System (where equipped), Brake Fluid Specifications, Bleeding Procedures Suspension Steering: Front MacPherson Struts, Rear Semi-Trailing Arms, Shock Absorbers, Springs, Bushings, Power Steering System, Steering Rack Electrical: 12V Electrical System, Battery, Alternator, Starter Motor, Lighting Systems (Headlights, Taillights, Interior), Fuses, Relays, Wiring Diagrams, Diagnostics Body Chassis: Body Panel Removal/Installation, Doors, Hood, Trunk, Bumpers, Interior Trim, Chassis Lubrication Points Climate Control: HVAC System, Air Conditioning, Heater Core, Blower Motor, Control Modules Fuel System: Fuel Pump, Fuel Filter, Fuel Lines, Injectors, Fuel Tank Exhaust: Exhaust Manifold, Catalytic Converter, Muffler, Exhaust Pipes Procedures Included Maintenance: Oil Changes, Filter Replacements, Spark Plug Service, Coolant Flush, Belt Replacement, Brake Pad Replacement, Tune-ups Repair: Engine Overhaul, Transmission Rebuild, Suspension Component Replacement, Brake System Repair, Electrical Component Diagnosis and Replacement, Body Panel Repair Troubleshooting: Diagnostic Charts for Common Issues (e.g., hard starting, poor running, electrical faults), Fault Code Interpretation (where applicable via Motronic) Diagnostics: Engine Management System Diagnostics, Electrical System Troubleshooting using Wiring Diagrams, Component Testing Procedures Technical Depth Depth: Comprehensive: Covers everything from routine maintenance to complete engine and transmission overhauls. Includes detailed diagnostic procedures and specifications for professional-level repairs. 📊 Manual Specifications File Format File Format: PDF Print Quality Quality: High-resolution scans, clear text, legible diagrams and images. Binding Type Binding: N/A (Digital Format) Paper Type Paper Type: N/A (Digital Format) ⚙️ Engine Specifications Primary Engine Engine Code: M20B20 Configuration: 2.0L (1990cc) Naturally Aspirated Inline-6 Cylinder Bore X Stroke: 80.0 mm x 66.0 mm Compression Ratio: 8.8:1 (typical) Valvetrain: SOHC, 12 Valves (2 per cylinder) Performance Horsepower: 129 PS (127 hp; 95 kW) @ 6000 rpm (typical for European models) Torque: 174 Nm (128 lb-ft) @ 4300 rpm (typical for European models) Fuel System Fuel Delivery: Bosch LE-Jetronic or L-Jetronic Fuel Injection (depending on market/year, later models often Motronic) Fuel Type: Unleaded Gasoline (Octane rating varies by market, typically 95 RON recommended) Ignition System Ignition Type: Electronic Ignition (BMW/Bosch) Cooling System Cooling Type: Water-Cooled, Thermostatically Controlled 🔧 Transmission Standard Transmission Type: Getrag 260 5-Speed Manual Optional Transmission Type: ZF 4HP22 4-Speed Automatic Features Clutch Type: Hydraulically Actuated Single Dry Plate (Manual) Transmission Fluid Manual: API GL-4 or GL-5 Gear Oil, SAE 75W-90 or 80W-90 (check specific manual for exact spec) Transmission Fluid Automatic: Dexron III / Mercon (or equivalent specified ATF) 📐 Dimensions Exterior Length: Approx. 4330 mm (170.5 in) for Sedan/Coupe Width: Approx. 1675 mm (65.9 in) Height: Approx. 1380 mm (54.3 in) for Sedan/Coupe Wheelbase: Approx. 2570 mm (101.2 in) Weights Curb Weight: Approx. 1250-1350 kg (2755-2976 lbs) depending on body style and options Gross Vehicle Weight Rating: Varies by model, refer to vehicle plate Wheel Bolt Pattern: 5x120 Wheel Size: Typically 14-inch or 15-inch alloy wheels Tire Size: Commonly 195/65R14 or 195/60R15 🛡️ Safety Features Ratings NHTSA Ratings: Data not readily available for this era and region, but E30 platform generally considered robust. Euro Ncap Ratings: Not applicable for this generation and period. Active Features ABS: Optional on some models, standard on later variants. Traction Control: Not typically available on the 320i E30 model. Passive Features Seatbelts: 3-point front seatbelts, 2-point rear seatbelts (later models may have 3-point rear) Airbags: Driver's side airbag optional from 1988/1989 onwards, not standard. Body Structure: Reinforced passenger cell with crumple zones front and rear. 💡 Technology Features Infotainment Audio System: Factory fitted AM/FM radio with cassette player. Aftermarket head units and speaker upgrades are common. Gauges Displays: Analog gauges for speedometer, tachometer, fuel level, engine temperature. Warning lights for oil pressure,...