🏷️ Basic Information Identification Make: BMW Model: 320i Year: 1991 Codes Chassis Code: E30 👋 Introduction Market Position Target Audience: BMW 320i 1991 owners, DIY enthusiasts, professional mechanics, and restoration specialists. Competitive Analysis Value Proposition: Offers significant cost savings on labor ($50-$60 per hour) by enabling owners to perform servicing themselves. Provides access to the same information as professional technicians. Key Features Completeness: Complete official full factory service repair manual covering all styles. Authenticity: Genuine factory manual, not a third-party reproduction. Flexibility: Printable in its entirety or specific pages, offering flexibility for various repair needs. 📋 Manual Details Coverage Areas Primary Coverage: North America Regional Variants: Specifies coverage for the 320i model variant. Page Count Estimated Pages: Hundreds (exact count not specified, but described as 'COMPLETE official full factory service repair manual') Manual Type Type: Factory Service Repair Manual Source Authenticity: Actual Genuine Repair Service Factory Manuals (NOT 3rd party manuals) Language Language: English Format Delivery Format: PDF Download 📖 Manual Coverage Systems Covered Engine Management: Engine Control System, Fuel Injection / Fuel System Powertrain: Engine Service / Repair, Transmission Service / Repair, Differential / Drive, Axle Chassis And Suspension: Suspension, Steering, Brake System, Chassis / Body Electrical And Electronics: Wiring Diagram, Electrical System Comfort And Climate: Heater/Air Conditioner Safety And Restraint: Restraint System Emissions Control: Emission System Procedures Included Maintenance: General Maintenance, Periodic Lubrication Diagnostics: Troubleshooting Repair And Rebuild: Step-by-step repair procedures for all covered systems, including engine, transmission, brakes, suspension, steering, electrical, fuel, cooling, and emissions. Restoration: Detailed instructions for refurbishing and restoring the vehicle. Technical Depth Depth Of Information: Comprehensive coverage, from fundamental maintenance to advanced diagnostics and repair procedures. Aims to teach what factory-trained technicians know. Diagnostics Tools: Advanced troubleshooting guide included for problem diagnosis. Documentation Elements Visual Aids: Hundreds of pages with all necessary illustrations, diagrams, and photos. Procedural Guidance: Detailed substeps, notes, cautions, warnings, numbered instructions, and bold figure numbers for clarity. Usability: Easy to use with a numbered table of contents for quick information retrieval. Searchable function for PDF. 📊 Manual Specifications File Format Format: PDF Compatibility: Works under all PC-based Windows operating systems and Mac. Print Quality Printability: Printable without any restriction. All pages are printable. Resolution: High resolution. Binding Type Binding: Digital (Downloadable PDF, printable by user) Paper Type Paper Format: N/A (Digital format, print as needed on user's choice of paper) Software Requirements Reader: Adobe PDF Reader ⚙️ Engine Specifications Primary Engine Engine Type: Inline 4-cylinder (M40 engine family) Displacement: 1.8 Liters (1796 cc) Bore X Stroke: 84.0 mm x 81.0 mm Compression Ratio: 8.5:1 Performance Horsepower: Approx. 115 hp @ 5600 rpm (DIN) Torque: Approx. 165 Nm (122 lb-ft) @ 4300 rpm (DIN) Fuel System Fuel Delivery: Bosch Motronic electronic fuel injection (EFI) Fuel Type: Unleaded gasoline (Premium, Octane rating typically 95 RON) Ignition System Type: Electronic ignition with knock sensor Cooling System Type: Pressurized, liquid-cooled Lubrication System Oil Type Recommendation: API SF/SG or higher, SAE 15W-40 or 10W-40 (refer to manual for specific BMW approval LL-xxx codes) 🔧 Transmission Standard Type: Getrag 260 5-speed manual transmission Optional Type: ZF 4HP22 4-speed automatic transmission Features Clutch Type: Hydraulically operated single dry plate clutch (for manual) Fluid Specifications Manual Transmission Fluid: BMW Gear oil, SAE 75W-90 (API GL-4/GL-5, refer to manual for specific BMW part number and BMW approval requirements) Automatic Transmission Fluid: Dexron II or equivalent (refer to manual for specific BMW approval requirements) 📐 Dimensions Exterior Length: Approx. 4365 mm (171.9 inches) Width: Approx. 1670 mm (65.7 inches) Height: Approx. 1380 mm (54.3 inches) Wheelbase: Approx. 2570 mm (101.2 inches) Weights Curb Weight: Approx. 1250-1300 kg (2755-2866 lbs, depending on equipment and transmission) Gross Vehicle Weight Rating: Refer to vehicle data sticker or manual Towing Capacity: Not typically specified for this model generation without auxiliary cooling and specific chassis upgrades. 🛡️ Safety Features Ratings Crash Test Data: While formal ratings like NHTSA/Euro NCAP were less standardized in 1991, the E30 chassis was known for its robust construction and driver-oriented safety features. Active Features Braking System: Four-wheel disc brakes (front ventilated, rear solid). Optional ABS (Anti-lock Braking System). Passive Features Airbags: Driver-side airbag became optional or standard on some late E30 models, including likely the 1991 320i, though not guaranteed for all configurations. Consult manual for specifics. Seat Belts: Three-point inertia-reel seat belts front and rear. Body Structure: Reinforced safety cage, crumple zones front and rear. 💡 Technology Features Infotainment Audio System: Factory radio (e.g., BMW Bavaria C, RDS) with cassette player. Speaker configuration typically 4 or 6 speakers. Driver Assistance ABS: Optional Anti-lock Braking System (ABS) available. Connectivity Pre Wiring: Basic wiring for optional accessories, but no integrated Bluetooth or USB connectivity. 🔧 Maintenance Service Intervals Oil Change Interval: Typically every 7,500-10,000 miles or 12 months, whichever comes first (refer to manual for specific intervals based on driving...