🏷️ Basic Information Identification Make: BMW Model: 3 Series Chassis Code: E30 Model Years Covered: 1984-1990 Specific Model Years Mentioned: 1984, 1985, 1986, 1987, 1989, 1990 Covered Models: 318i, 325, 325e, 325es, 325i, 325is, 325 Convertible 👋 Introduction Market Position Target Audience: BMW E30 owners, DIY mechanics, independent repair shops Value Proposition: Empowers owners to maintain, service, diagnose, and repair their vehicles, saving on dealership costs. Provides 'dealer-level' information. Competitive Analysis Advantage: Instant digital access, comprehensive coverage, official factory data equivalent. Key Features Content Quality: Step-by-step instructions, detailed diagrams, factory-accurate procedures. 📋 Manual Details Coverage Areas Primary Focus: Maintenance, Service, Diagnosis, and Repair Technical Content: All repair procedures Page Count Estimated Page Count: Comprehensive (actual number not specified, but implied extensive) Manual Type Type: Factory Service/Repair/Workshop Manual Language Language: English Format File Format: PDF Delivery Method: Instant Download Compatibility: All Versions of Windows & Mac Requirements: Adobe PDF Reader, WinZip Printability: All pages are printable 📖 Manual Coverage Systems Covered Engine Mechanical: Engine, Engine Electrical Equipment, Fuel System, Fuel Tanks and Lines, Radiator, Exhaust System Drivetrain: Clutch, Manual Transmission, Gear Shift Mechanism, Propeller Shaft, Transfer Box, Front Axle, Rear Axle Chassis Suspension Steering Brakes: Steering and Wheel Alignment, Brakes, Pedals, Wheels and Tires, Integrated Suspension Systems Body Interior: Body, Body Equipment, Seats, Hood, Sun Roof Electrical Electronics: Electrical System, Instruments, Lights, Radio and Special Equipment Climate Control: Heating and Air Conditioning Accessories: Equipment and Accessories for Engine and Chassis, Equipment and Accessories for Body Procedures Included Maintenance: Scheduled maintenance, general data, fluid changes, filter replacements Repair Rebuild: Complete engine overhaul, transmission rebuild, brake system repair, suspension component replacement, body panel repair, electrical component diagnosis and repair Diagnostics: Troubleshooting procedures for all systems, diagnostic codes (if applicable to the era) Adjustments: Valve adjustments, brake adjustments, steering alignment Technical Depth Depth: Comprehensive, covering all aspects from basic maintenance to advanced repair, mirroring dealer/mechanic level information Visuals: Highly detailed exploded pictures and diagrams 📊 Manual Specifications File Format Quality: High-quality PDF, printable Searchability: Implied searchable text within PDF for efficient information retrieval Print Quality Quality: Printable pages allow for physical copy creation Binding Type Type: N/A (Digital Download) Paper Type Type: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Model 318I Engine: M10B18 1.8L Inline-4 (SOHC) Model 325 325E 325Es Engine: M20B27 2.7L Inline-6 (SOHC) - 'Eta' variant (economy-focused) Model 325I 325Is 325 Convertible Engine: M20B25 2.5L Inline-6 (SOHC) Performance 318I Power Approx: 100-105 hp 325E Power Approx: 121-124 hp 325I Power Approx: 168-171 hp Fuel System Injection Type: Bosch L-Jetronic or Motronic electronic fuel injection (model dependent) Fuel Type: Unleaded gasoline 🔧 Transmission Standard Type E30: Getrag 260 5-speed manual transmission (standard on most performance models) Optional Type E30: ZF 4HP22 4-speed automatic transmission (optional) Features Manual Transmission Differences: Specific gear ratios and clutch specifications covered for each model variant. Fluid Requirements Manual Transmission Fluid: Typically Dexron III or equivalent ATF, or GL-4 gear oil (specifics in manual). Automatic Transmission Fluid: Dexron III or equivalent ATF (specifics in manual). 📐 Dimensions Exterior Body Styles Covered: 2-door sedan, 4-door sedan, convertible Wheelbase: Approx. 101.2 inches (2570 mm) for sedans, 101.3 inches (2573 mm) for convertibles Weights Curb Weight Range: Approx. 2700 - 3100 lbs (1225 - 1400 kg) depending on model and equipment 🛡️ Safety Features Ratings Crash Test Data: While official NHTSA ratings from this era are scarce, the E30 chassis was known for its robust build quality and independent suspension's handling characteristics contributing to accident avoidance. Active Features Braking System: Front ventilated discs, rear solid discs (standard on most models). ABS optional/standard on later 325i/is models. Passive Features Construction: Unitized body construction with crumple zones. Restraints: Seat belts. Airbags were not standard on E30 models of this period. 💡 Technology Features Infotainment Radio System: Factory-installed radio/cassette players were common, with options for upgraded sound systems. Manual covers removal, installation, and troubleshooting. Driver Assistance ABS: Anti-lock Braking System (ABS) was an optional feature on some models and a standard feature on later models, particularly the 325is. The manual details its operation and repair. Connectivity Features: No modern connectivity features like Bluetooth or USB were standard. Manual covers basic electrical system for accessories and factory options. 🔧 Maintenance Service Intervals Oil Change Interval: Typically 5,000-7,500 miles or annually, depending on driving conditions (refer to specific manual for precise intervals). Spark Plug Replacement: Around 30,000 miles for standard plugs, longer for platinum/iridium (refer to manual). Timing Belt Chain: M10 engine uses a timing chain (virtually maintenance-free). M20 engines use a timing belt with replacement intervals typically around 40,000-60,000 miles or 4-5 years. Critical to follow manual for M20. Fluid Specifications Engine Oil Type: SAE 15W-40 or 10W-40 synthetic or semi-synthetic recommended for most E30s, especially M20 engines. 5W-30 or 5W-40 may be used in colder climates. Consult manual for precise API service class and...