🏷️ Basic Information Identification Make: BMW Model: 3 Series Model Variant: 325 Model Years Covered: 1987, 1988, 1989, 1990, 1991 Codes Chassis Codes: E30 👋 Introduction Market Position Market Position: The BMW 3 Series (E30) of this era was a benchmark for sports sedans and coupes, prized for its driving dynamics and build quality. Competitive Analysis Competitive Analysis: Competed against vehicles like the Mercedes-Benz 190E, Audi 80/90, and various Japanese sports sedans, often lauded for superior handling. Key Features Key Features: Renowned for its rear-wheel-drive platform, balanced chassis, and the iconic 'M' division influence even on standard models. Target Audience Target Audience: Enthusiasts, DIY mechanics, and professional workshops working on the E30 325 models. 📋 Manual Details Coverage Areas Diagnostic Procedures: Full diagnostic procedures for all major systems. Electrical Systems: Comprehensive coverage of all electrical components and wiring diagrams. Engine Mechanical: Detailed mechanical repair procedures for the engine. Transmission And Drivetrain: Complete repair and maintenance for manual and automatic transmissions and driveshafts. Suspension And Steering: In-depth coverage of suspension components, steering systems, and alignment. Braking System: Detailed procedures for brake system maintenance, repair, and troubleshooting, including ABS if equipped. Body And Chassis: Procedures for body repair, panel replacement, and chassis diagnostics. HVAC System: Repair and maintenance of the heating, ventilation, and air conditioning system. Fuel And Exhaust Systems: Repair and diagnosis of fuel delivery, injection, and exhaust components. Cooling System: Maintenance and repair of the engine cooling system, including radiators and water pumps. Maintenance Schedules: Detailed preventative maintenance schedules for various mileages and time intervals. Page Count Page Count: 225 Manual Type Manual Type: Workshop Service Repair Manual Language Language: English Format Format: PDF 📖 Manual Coverage Systems Covered Engine Management: Includes detailed information on the Bosch Motronic engine management system. Emission Control: Covers emission control systems, including catalytic converter operation and diagnosis. Instrumentation: Details on dashboard instruments, warning lights, and their functions. Lighting System: Complete wiring diagrams and troubleshooting for exterior and interior lighting. Interior Components: Removal and installation procedures for interior trim and components. Procedures Included Routine Maintenance: Oil changes, filter replacements, spark plug service, fluid level checks. Major Repairs: Engine overhauls, transmission rebuilds, clutch replacement, suspension component replacement. Troubleshooting Diagnostics: Step-by-step troubleshooting guides for common and complex issues. Component Replacement: Detailed instructions for replacing major components like alternators, starters, fuel pumps. Adjustment Procedures: Idle speed, valve lash (where applicable), and other critical adjustments. Technical Depth Technical Depth: Comprehensive: covers everything from basic maintenance to complete engine and transmission rebuilds, including detailed electrical troubleshooting. 📊 Manual Specifications File Format File Format: PDF Print Quality Print Quality: High-resolution, clear text and diagrams suitable for printing. Binding Type Binding Type: Not Applicable (Digital Download) Paper Type Paper Type: Not Applicable (Digital Download) Searchability Searchability: Fully searchable text for quick information retrieval. Instant Download Instant Download: Yes ⚙️ Engine Specifications Primary Engine Engine Code: M20B25 Engine Type: Inline 6-cylinder, SOHC, 12-valve Displacement: 2.5 Liters (2494 cc) Performance Horsepower Gross Approx: 168 hp @ 5800 rpm Torque Gross Approx: 164 lb-ft @ 4300 rpm Fuel System Fuel System Type: Bosch Motronic Fuel Injection (e.g., Motronic ML-1.3) Recommended Fuel: Unleaded Premium (91 Octane or higher) Engine Management Ignition System: Distributorless ignition system (DIS) on later models, or distributor-based systems. 🔧 Transmission Standard Standard Transmission: 5-speed Manual (Getrag 260/5) Optional Optional Transmission: 4-speed Automatic (ZF 4HP22) Features Clutch Type: Single dry plate, hydraulic actuation. Rear Differential: Standard Limited Slip Differential (LSD) on many 325 models, with open differential as an option. 📐 Dimensions Exterior Wheelbase: approx. 101.2 inches (2570 mm) Length: approx. 170.5 inches (4330 mm) Width: approx. 67.3 inches (1709 mm) Height: approx. 55.1 inches (1400 mm) Weights Curb Weight Approx: 2,900 - 3,100 lbs (1315 - 1406 kg), depending on body style and options. Wheels Tires Wheel Bolt Pattern: 5 x 120 mm Standard Wheel Size: 14-inch or 15-inch alloy wheels. Standard Tire Size: 205/60VR14 or 205/55VR15 🛡️ Safety Features Ratings Safety Ratings Era: Vehicles of this era typically did not have standardized crash test ratings like NHTSA or Euro NCAP. Active Features Active Safety Features: ABS (Anti-lock Braking System) was optional on most 325 models, becoming more standard on later years. Passive Features Passive Safety Features: Impact-absorbing steering column, reinforced door beams, front and rear crumple zones. Restraints Seat Belts: Three-point inertia-reel seatbelts for front occupants, lap belts for rear. 💡 Technology Features Infotainment Infotainment Features: Basic AM/FM radio with cassette player was standard, with optional premium sound systems. Driver Assistance Driver Assistance Features: ABS was the primary electronic driver assistance feature available as an option. Connectivity Connectivity Features: None by modern standards; primarily analog systems. 🔧 Maintenance Service Intervals Oil Change Interval: Typically every 7,500 to 10,000 miles or 12 months, whichever comes first, depending on driving conditions. Spark Plug Replacement: Approximately every 30,000 miles, depending on spark plug type...