🏷️ Basic Information Identification Make: BMW Model: M3 Generation: E30 Year: 1989 Codes Chassis Code: E30 Engine Code: S14 👋 Introduction Market Position Market Segment: Performance Compact Sports Coupe/Sedan Target Audience: Enthusiasts, DIY mechanics, professional workshops specializing in BMW vehicles Competitive Analysis Key Competitors: Porsche 944, Mercedes-Benz 190E 2.3-16/2.5-16, Ford Sierra Cosworth, Audi Quattro Key Features Design Philosophy: Homologation special for racing, motorsport-derived technology, driver-focused ergonomics Performance Focus: Exceptional handling, braking, and acceleration for its era Manual Value: Essential for preserving and maintaining the E30 M3's unique capabilities 📋 Manual Details Coverage Areas All Models: True All Engines: True All Trims: True All Transmissions: True Page Count Estimated Pages: Approx. 2000+ Manual Type Type: Workshop Repair Service Manual Language Language: English Format Format: PDF Download 📖 Manual Coverage Systems Covered Engine Mechanical: Full overhaul, internal components, timing, valve train, oil system, cooling system Engine Electrical: Ignition system (ECU, distributors, coils), fuel injection system (ECU, injectors, fuel pump, sensors), starting system, charging system Transmission: Manual transmission (Getrag 265) repair, clutch system, driveline, driveshafts, differentials Suspension: Front suspension (MacPherson struts, control arms, anti-roll bars), rear suspension (semi-trailing arms, shock absorbers, springs), bushings Brakes: Front and rear disc brakes, ABS system (Bosch), hydraulic system, brake fluid, parking brake Steering: Power steering system, steering rack, tie rods, steering column Fuel System: Fuel tank, fuel pump, fuel lines, fuel injectors, fuel pressure regulator, fuel filter Cooling System: Radiator, water pump, thermostat, coolant hoses, heater core Exhaust System: Exhaust manifolds, catalytic converter, muffler, exhaust pipes Electrical System: Wiring diagrams, fuses, relays, lighting, instrument cluster, power windows, central locking Bodywork: Body panel removal and installation, chassis straightening, door mechanisms, glass replacement HVAC: Air conditioning system, heater, ventilation, climate control components Procedures Included Scheduled Maintenance: Oil changes, filter replacements, fluid checks, spark plug replacement, belt inspections Troubleshooting: Diagnostic procedures for common and uncommon issues, error code interpretation (where applicable) Repair And Rebuild: Detailed instructions for component removal, disassembly, repair, reassembly, and installation Diagnostics: Engine diagnostics, electrical system diagnostics, ABS system diagnostics Torque Specifications: Torque values for all critical fasteners and components Alignment: Wheel alignment specifications and procedures Electrical Schematics: Comprehensive wiring diagrams for all vehicle systems Technical Depth Depth: Comprehensive (from basic maintenance to complete engine and transmission rebuilds) Diagnostics Level: Advanced (includes troubleshooting charts and symptom-based diagnosis) Rebuild Scope: Full engine and transmission overhaul procedures 📊 Manual Specifications File Format File Type: PDF Searchability: Searchable text Print Quality: High-resolution, printable pages Binding Type Binding: N/A (Digital Download) Paper Type Paper: N/A (Digital Download) Completeness Completeness: Factory-level documentation ⚙️ Engine Specifications Primary Engine Engine Type: Naturally Aspirated Inline-4 DOHC Engine Code: S14 Displacement: 2302 cc (2.3 Liters) Bore X Stroke: 91 mm x 89.6 mm Compression Ratio: 10.3:1 Performance Horsepower: 192 hp @ 6,900 rpm (US Spec) Torque: 170 lb-ft @ 4,900 rpm (US Spec) Redline: 7,250 rpm Fuel System Fuel Injection: Bosch Motronic Injection and Ignition Fuel Type: Unleaded Premium Gasoline (91+ Octane) Ignition Ignition System: Distributorless ignition (coil-on-plug in later S14 variants, but typically distributor for 1989 E30 M3) 🔧 Transmission Standard Transmission Type: 5-Speed Manual Transmission Model: Getrag 265/5 Optional Optional Transmission: N/A (Only Manual Offered) Features Clutch Type: Hydraulically actuated single dry plate clutch Final Drive Ratio: 3.25:1 (Common) Limited Slip Differential: Standard 📐 Dimensions Exterior Length: 4,330 mm (170.5 in) Width: 1,680 mm (66.1 in) Height: 1,370 mm (53.9 in) Wheelbase: 2,565 mm (101.0 in) Front Track: 1,430 mm (56.3 in) Rear Track: 1,450 mm (57.1 in) Weights Curb Weight: Approx. 1,200 kg (2,646 lbs) Gross Vehicle Weight: Approx. 1,700 kg (3,748 lbs) Front Suspension Type: Independent, MacPherson struts, lower control arms, anti-roll bar Rear Suspension Type: Independent, semi-trailing arms, coil springs, telescopic shock absorbers, anti-roll bar Wheel Size: 15 x 7 inches (Standard) Tire Size: 205/55 VR 15 (Standard) Bolt Pattern: 5 x 120 mm 🛡️ Safety Features Ratings Crash Test Data: NHTSA ratings for E30 chassis apply, though M3 specific data is less prevalent. Generally considered robust for its era. Active Features ABS: Standard Bosch ABS (Anti-lock Braking System) Brakes: Four-wheel disc brakes (ventilated front, solid rear) Passive Features Seatbelts: 3-point inertia reel seatbelts front and rear Driver Airbag: Optional/Late Production (primarily driver's side if equipped) Body Structure: Reinforced chassis and body panels for improved rigidity and crash protection 💡 Technology Features Infotainment Head Unit: Original BMW Bavaria C or similar cassette player (upgradeable) Speakers: Factory speaker locations, often requiring replacement for modern audio quality. Driver Assistance ABS: Bosch ABS system for enhanced braking control. Connectivity Phone Integration: None (period-appropriate, requires aftermarket solutions) 🔧 Maintenance Service Intervals Oil Change Interval: Every 7,500 miles or annually (recommendation based on typical driving) Air Filter Replacement: Every 15,000 miles or annually Spark Plug Replacement: Every 30,000 miles (NGK BKR6EK) Coolant Flush: Every 2 years or 30,000 miles Brake Fluid Flush: Every 2 years Fluid...