🏷️ Basic Information Identification Make: BMW Model: 3 Series Model Variant: 325e, 318i Year: 1984 Codes Chassis Code E21 E30: E30 (for 325e and 318i of this era) 👋 Introduction Market Position Target Audience: DIY enthusiasts and experienced mechanics. Competitive Analysis Dealer Equivalence: Identical in type and detail to manuals used by official BMW dealerships. Key Features Content Quality: 100% complete and intact, no missing or corrupt pages/sections. High-quality scans with detailed illustrations and step-by-step instructions. Ease Of Use: Numbered table of contents for quick information retrieval. Bold figure numbers to match illustrations with instructions. 📋 Manual Details Coverage Areas Primary Focus: Electrical systems troubleshooting and repair Vehicle Styles Covered: All styles (Sedan, Coupe, Convertible, potentially Touring if applicable to 1984 models, though less common) Page Count Total Pages: Over 130 pages Manual Type Type: Electrical Troubleshooting Manual / Workshop Service Manual Language Language: English (implied by product description) Format File Format: PDF 📖 Manual Coverage Systems Covered Electrical Systems: Comprehensive coverage of all vehicle electrical systems, including lighting, ignition, starting, charging, fuel injection, instrument cluster, power windows, wipers, horn, audio systems, etc. Wiring Diagrams: Detailed wiring diagrams, often presented with troubleshooting information integrated. Engine Control System: Detailed information on the electronic engine control units (ECU), sensors (e.g., crankshaft position, throttle position, airflow meter), and actuators for both M10 and M20 engines. Charging System: Components like the alternator, voltage regulator, and battery, including testing and troubleshooting procedures. Starting System: Starter motor, starter solenoid, ignition switch, and related wiring. Lighting System: Headlights, taillights, brake lights, turn signals, interior lights, fog lights (if equipped). Instrument Cluster: Speedometer, tachometer, fuel gauge, temperature gauge, warning lights, and their electrical circuits. Procedures Included Troubleshooting: Step-by-step troubleshooting procedures for diagnosing electrical faults and issues. Repair Procedures: Detailed repair procedures for electrical components and systems. Diagnostics: Guidance on diagnosing problems within the electrical system. Wire Harness Repair: Procedures for inspecting, repairing, and replacing wire harnesses. Component Testing: Procedures for testing various electrical components (e.g., relays, solenoids, sensors) using multimeters and test equipment. Technical Depth Depth: Detailed, specific to the level used by dealership technicians. Includes sub-steps, notes, cautions, and warnings. Illustrations Photos: Hundreds of detailed illustrations, drawings, and photos to guide users through procedures. Includes enlarged insets for detailed part examination. Diagnostic Codes: While OBD-I was in its infancy, this manual likely details diagnostic procedures based on symptom analysis and component testing rather than specific trouble codes. 📊 Manual Specifications File Format Compatibility: Windows, Mac, Linux Print Quality Printability: All pages printable without restriction. Binding Type Binding Type: Digital (PDF format) Paper Type Paper Type: N/A (Digital format) ⚙️ Engine Specifications Primary Engine Engine 2 318I: M10 4-cylinder, 1.8L (1766cc) Engine 2 325E: M20 6-cylinder, 2.7L (2693cc), known for its 'economy' tuning (lower RPM, higher torque). Performance 318I Hp Approx: 105 hp @ 5800 rpm (Euro spec, US spec may vary slightly due to emissions) 325E Hp Approx: 121-125 hp @ 4800-5000 rpm (US spec eta engine) Fuel System Fuel System 318I: Likely Bosch L-Jetronic or similar electronic fuel injection system for 1984. Fuel System 325E: Bosch Motronic (often with Lambda control) electronic fuel injection system. 🔧 Transmission Standard Transmission 318I: 4-speed manual transmission. Transmission 325E: 5-speed Getrag manual transmission (often dogleg first gear for sportier feel). Optional Transmission 318I Optional: 3-speed or 4-speed automatic transmission available. Transmission 325E Optional: 4-speed automatic transmission. 📐 Dimensions Exterior Body Styles: E30 chassis was available as 2-door sedan, 4-door sedan, convertible. The specific manual covers 318i and 325e, which were primarily offered in sedan and coupe (2-door) forms, with convertible variants also existing. Weights Curb Weight Approx 318I: ~2500-2700 lbs (1134-1225 kg) Curb Weight Approx 325E: ~2700-2900 lbs (1225-1315 kg) 🛡️ Safety Features Ratings Crash Test Era: 1980s safety standards, pre-mandated airbags and advanced crumple zones. Passive Features Seat Belts: Standard 3-point seat belts in the front. Steering Column: Collapsible steering column designed for impact absorption. 💡 Technology Features Infotainment Audio System: Factory-installed AM/FM radio with cassette player. Aftermarket options common. Speaker systems varied by trim. Driver Assistance ABS: Anti-lock Braking System (ABS) was an optional feature on higher-trim models, including potentially the 325e. Connectivity Early Systems: Limited to basic electrical accessories. No onboard computers or digital displays beyond the instrument cluster. 🔧 Maintenance Service Intervals Oil Change Interval Approx: Every 5,000-7,500 miles (8,000-12,000 km) or 6-12 months, depending on driving conditions. Spark Plug Replacement Approx: Every 30,000 miles (48,000 km) for standard plugs, potentially longer for platinum. Timing Belt Replacement: Not applicable to M10 (4-cyl) or M20 (6-cyl) engines, which use a timing chain, though chain tensioners and guides would require inspection. Fluid Specifications Engine Oil Type Approx: API SG/SH, SAE 10W-40 or 15W-50 (check manual for precise BMW spec, e.g., BMW High Performance Synthetic or similar from the era). Coolant Type: Ethylene glycol-based antifreeze mixed with distilled water...