🏷️ Basic Information Identification Make: BMW Model: 3 Series Chassis Code: E30 Body Styles Covered: Touring (Wagon), Convertible Model Years Covered: 1983-1991 Codes Engine Codes Common: M10 (4-cyl), M20 (6-cyl), M40 (4-cyl), M42 (4-cyl DOHC) Transmission Codes Common: Getrag 240, Getrag 260 👋 Introduction Market Position Segment: Compact executive car Target Audience: Enthusiasts, DIY mechanics, owners seeking to maintain or restore their E30 Competitive Analysis Key Competitors: Mercedes-Benz W201 (190E), Audi 80/90, Alfa Romeo 75, Ford Sierra Key Features Performance Orientation: Known for its sporty handling, rear-wheel-drive platform, and driver-focused experience Durability: Renowned for build quality and longevity when properly maintained Versatility: The Touring and Convertible variants offered increased practicality and open-air enjoyment respectively 📋 Manual Details Coverage Areas Market Availability: Global (specific to market variants may exist within manual) Language: English Page Count Estimated Page Count: Over 1000 pages (typical for comprehensive workshop manuals) Manual Type Type: Service and Repair Workshop Manual Format Digital Format: Downloadable PDF 📖 Manual Coverage Systems Covered Engine: Complete diagnosis, overhaul, timing, fuel injection (Bosch L-Jetronic, Motronic), cooling, lubrication Transmission: Manual and automatic transmission repair, clutch service, driveshafts, differential Brakes: Hydraulic system diagnosis and repair, ABS (if equipped), brake pad/rotor replacement, parking brake Suspension: Front and rear suspension components, shock absorbers, springs, bushings, wheel alignment Steering: Power steering system diagnosis and repair, steering column, tie rods Electrical: Wiring diagrams, starter, alternator, battery, lighting system, ignition system, instrument cluster, ECUs Bodywork: Body panel removal/installation, convertible top mechanisms, interior trim, doors, windows Climate Control: HVAC system diagnosis, refrigerant service, blower motor, heater core, A/C compressor Procedures Included Maintenance: Scheduled maintenance, oil changes, filter replacements, spark plugs, coolant flushes Troubleshooting: Diagnostic procedures, fault code interpretation, common problem diagnosis Repair: Detailed step-by-step repair instructions for all major systems Rebuild: Engine and transmission rebuild procedures with torque specifications Installation: Installation procedures for common replacement parts (e.g., suspension components, exhaust) Technical Depth Depth: Comprehensive, from basic maintenance to complete engine/transmission overhauls and advanced diagnostics Diagnostic Tools: Information on necessary tools and equipment, including specific diagnostic testers (where applicable to the era) 📊 Manual Specifications File Format Searchability: Searchable text within PDF for quick information retrieval Resolution: High-resolution scans for clear diagrams and text Print Quality Print Readability: Designed for clear printing of all pages and diagrams Binding Type Digital Format: N/A (Downloadable PDF) Paper Type Digital Format: N/A (Digital Document) ⚙️ Engine Specifications Primary Engine Base Engine E30 Touring: M10B18 (1.8L Inline-4, 8V, SOHC), later M40B18 (1.8L Inline-4, 8V, SOHC) Popular Engine E30 Touring: M20B25 (2.5L Inline-6, 12V, SOHC) Popular Engine E30 Convertible: M20B20 (2.0L Inline-6, 12V, SOHC), M20B25 (2.5L Inline-6, 12V, SOHC), M30B35 (3.5L Inline-6, 12V, SOHC for specific models like 335i) Later Performance Engine: M42B18 (1.8L Inline-4, 16V, DOHC) Performance Horsepower Range: Approx. 105 hp (1.8L) to 170 hp (2.5L), up to 210 hp for M3 variants (though M3 is not typically E30 Touring/Convertible) Torque Range: Approx. 105 lb-ft (1.8L) to 140 lb-ft (2.5L) Fuel System Injection Systems: Bosch L-Jetronic, Bosch Motronic (various generations depending on engine and year) Fuel Type: Unleaded Gasoline 🔧 Transmission Standard Standard Transmission: 4-speed manual (early), 5-speed manual (later, common) Optional Optional Transmission: 3-speed automatic (early), 4-speed automatic (later) Features Rear Wheel Drive: All E30 models are RWD Gear Ratios: Specific ratios for different transmissions and engine variants detailed in manual 📐 Dimensions Exterior Wheelbase: Approx. 2570 mm (Touring & Convertible) Length: Varies by body style, approx. 4340 mm (Touring), 4340 mm (Convertible) Width: Approx. 1675 mm Height: Varies by body style, approx. 1370 mm (Convertible), 1415 mm (Touring) Cargo Cargo Capacity Touring: Approx. 370-1120 liters with rear seats folded Weights Curb Weight: Approx. 1200-1350 kg depending on engine and body style Wheel Bolt Pattern: 5x120 🛡️ Safety Features Ratings Historical Safety Standards: Designed to early 1980s/1990s safety standards; Euro NCAP/NHTSA ratings may not be directly comparable to modern vehicles Active Features ABS: Optional on many models, standard on some later variants and performance models Passive Features Airbags: Driver airbag optional on later models, passenger airbag generally not available until very late production or E36 generation. Seatbelts: 3-point front seatbelts, rear seatbelts Rollover Protection: Reinforced A-pillars and windscreen frame for convertible models 💡 Technology Features Infotainment Radio Options: Factory radios (e.g., BMW Bavaria C, Business Cassette) were common. Aftermarket upgrades are prevalent. Speaker Systems: Basic speaker setups, often requiring upgrades for modern audio quality. Driver Assistance Cruise Control: Optional on many models. Onboard Computer: Optional on some higher-trim models, displaying basic trip information. Connectivity Early Phone Integration: Pre-dates modern Bluetooth or USB connectivity. Some vehicles might have provision for early car phones. 🔧 Maintenance Service Intervals Oil Change Interval: Typically every 5,000-7,500 miles or annually, depending on driving conditions and oil type. Manual will specify for each engine. Timing Belt Replacement: For M20 and M40 engines: typically every 30,000-40,000 miles or 2-3 years....