🏷️ Basic Information Identification Make: BMW Model: 320i Chassis Code: E30 Codes Engine Code 320I: M20B20 Generation Generation: First Generation E30 (1982-1994) 👋 Introduction Market Position Positioning: A premium compact executive sedan known for its sporty driving dynamics and build quality. Competitive Analysis Competitors: Mercedes-Benz 190E, Audi 80, Alfa Romeo 75, Saab 900 Key Features Features: Rear-wheel drive, balanced chassis, driver-focused interior, robust engineering. Target Audience Audience: Mechanics, DIY enthusiasts, and owners looking to maintain or repair their BMW 320i. 📋 Manual Details Coverage Areas Covered Years: 1987, 1988, 1989, 1990, 1991 Page Count Page Count: 227 Manual Type Manual Type: Workshop Service Repair Manual Language Language: English Format Format: PDF 📖 Manual Coverage Systems Covered Systems: Engine, Drivetrain, Suspension, Steering, Brakes, Electrical System, Fuel System, Cooling System, Exhaust System, Bodywork, Interior, Climate Control, Emissions Control Electrical System Details: Wiring diagrams, component testing, fuse box layout, starter, alternator, lighting systems, ignition system, fuel injection control. Fuel System Details: Fuel pump, fuel filter, fuel injectors, fuel pressure regulator, fuel tank, fuel lines. Suspension Steering Details: Front struts, rear shock absorbers, control arms, sway bars, steering rack, tie rods, wheel alignment specifications. Procedures Included Procedures: Maintenance, Troubleshooting, Diagnosis, Removal, Installation, Disassembly, Assembly, Adjustment, Repair, Specifications, Diagrams, Torque Values, Wear Limits Engine Repair Procedures: Cylinder head removal/installation, piston/connecting rod service, crankshaft service, valve adjustment, timing belt replacement (where applicable, though M20 is chain-driven), oil pump service, lubrication system. Transmission Repair Procedures: Manual and automatic transmission disassembly/assembly, clutch replacement, torque converter service, driveshaft and differential service. Brake System Procedures: Brake pad and rotor replacement, brake caliper service, brake bleeding, parking brake adjustment, hydraulic system checks. Technical Depth Depth: Comprehensive, Step-by-step procedures with detailed illustrations, exploded diagrams, and photos. Covers basic maintenance to advanced repairs. Diagnostic Procedures: Detailed troubleshooting guides for common symptoms, diagnostic flowcharts, component testing procedures using multimeters and specialized equipment. Special Tools: Manual references specific BMW special tools required for certain procedures and illustrates their usage. 📊 Manual Specifications File Format Compatibility: Windows, Mac, Linux OS Print Quality Printability: Yes, all pages are printable. Binding Type Binding Type: Digital (PDF Download) Paper Type Paper Type: Not Applicable (Digital) Software Requirement Software: Adobe Reader File Quality Scan Quality: High-quality scans ensuring clarity of text and diagrams. "100 percents COMPLETE and INTACT, no MISSING/CORRUPT pages/sections." ⚙️ Engine Specifications Primary Engine Engine Type 320I: Inline 4-cylinder, SOHC, naturally aspirated Performance Horsepower 320I: Approx. 129 hp @ 5800 rpm (subject to regional variations) Torque 320I: Approx. 129 lb-ft @ 4000 rpm (subject to regional variations) Fuel System Fuel Delivery 320I: Bosch LE-Jetronic or Motronic fuel injection Engine Code Engine Code: M20B20 Displacement Displacement: 2.0 Liters (1990 cc) Cooling System Cooling System Type: Pressurized, liquid-cooled, belt-driven water pump. 🔧 Transmission Standard Standard Transmission: 4-speed manual Optional Optional Transmission: 3-speed automatic (early models), 4-speed automatic (later models) Features Drivetrain: Rear-wheel drive 📐 Dimensions Exterior Wheelbase: 2570 mm (101.2 in) Length: 4340 mm (170.9 in) Width: 1674 mm (65.9 in) Height: 1380 mm (54.3 in) Weights Curb Weight: Approx. 1200-1280 kg (2645-2820 lbs) depending on configuration Gross Vehicle Weight Rating: Refer to specific vehicle placard or manual; typically around 1800 kg (3968 lbs). 🛡️ Safety Features Ratings Crash Safety: NHTSA ratings from the era are limited, but the E30 chassis was known for its robust structure. The manual would detail structural repairs and safety system checks. Active Features Active Safety: Optional ABS (Anti-lock Braking System) on later models, precise steering. Passive Features Passive Safety: Reinforced safety cage, energy-absorbing steering column, front and rear crumple zones. 💡 Technology Features Infotainment Infotainment System: Basic analog gauges, optional cassette player/radio. Manual focuses on mechanical and electrical systems, not complex infotainment. Driver Assistance Driver Assistance Features: Limited by modern standards; primarily focused on excellent chassis dynamics and handling. Manual details steering and suspension adjustments. Connectivity Connectivity Features: None. 🔧 Maintenance Service Intervals Oil Change Interval: Refer to manual for specific intervals, typically 5,000-7,500 miles (8,000-12,000 km) or 6-12 months. Manual provides detailed schedule. Fluid Specifications Engine Oil Type: Refer to manual. Typically BMW recommends synthetic oil meeting specific viscosity grades like 10W-40 or 5W-40, e.g., Castrol GTX or BMW High Performance SAE 15W-50 for older specs. Manual will list OEM approved specifications. Coolant Type: Ethylene glycol-based antifreeze. Manual will specify BMW coolant or equivalent with correct concentration. Brake Fluid Type: DOT 3 or DOT 4 brake fluid. Manual will specify exact type and replacement intervals. Transmission Fluid Type: Manual: API GL-4 or GL-5 gear oil. Automatic: ATF Dexron II or III. Manual will provide specific BMW part numbers or approved equivalents. Power Steering Fluid Type: BMW approved power steering fluid or Pentosin CHF 11S (check manual for exact specification). Known Issues Common Problems: Cooling system leaks (hoses, water pump, radiator), fuel distributor issues (if applicable), vacuum leaks, rear trailing arm bushings, rust in...