🏷️ Basic Information Identification Make: BMW Model: 3 Series Convertible Model Variant: 325i Codes Chassis Code: E30 Engine Code Range: M20B25 👋 Introduction Market Position Segment: Compact Luxury Sports Convertible Reputation: Known for its engaging driving dynamics, build quality, and iconic styling Competitive Analysis Competitors: Porsche 944, Mercedes-Benz 190SL, Alfa Romeo Spider, Audi Cabriolet Key Features Styling: Classic BMW design language with signature Hofmeister kink and kidney grille Driving Dynamics: Rear-wheel drive, balanced chassis, responsive steering Convertible Experience: Engaging open-top driving with a well-engineered soft-top mechanism 📋 Manual Details Coverage Areas Applicable Years: 1984, 1985, 1986, 1987, 1988, 1989, 1990 Page Count Total Pages: 550 Manual Type Type: Workshop Service Repair Manual Language Language: English Format Format: PDF (Digital Download) 📖 Manual Coverage Systems Covered Engine Mechanical: Yes (Diagnosis, disassembly, assembly, inspection, repair, overhaul) Engine Electrical: Yes (Ignition, fuel injection, sensors, ECU, starting system, charging system) Transmission Manual: Yes (Diagnosis, removal, installation, overhaul) Transmission Automatic: Yes (Diagnosis, removal, installation, overhaul) Drivetrain And Axles: Yes (Clutch, driveshaft, differential, axles) Suspension And Steering: Yes (Front suspension, rear suspension, steering gear, power steering) Brakes System: Yes (Front brakes, rear brakes, parking brake, ABS - if equipped) Fuel System: Yes (Fuel tank, fuel pump, fuel injectors, fuel lines) Cooling System: Yes (Radiator, water pump, thermostat, coolant hoses) Exhaust System: Yes (Manifold, catalytic converter, mufflers, pipes) Electrical System Components: Yes (Battery, alternator, starter, lighting, horns, wipers) Body And Chassis: Yes (Body panels, doors, hood, trunk, convertible top mechanism) Interior And Trim: Yes (Seats, dashboard, door panels, carpeting) HVAC System: Yes (Heating, ventilation, air conditioning) Convertible Top System: Yes (Operation, maintenance, repair of the soft top mechanism) Procedures Included Scheduled Maintenance: Yes (Oil changes, filter replacements, inspections) Troubleshooting: Yes (Diagnostic charts, symptom-based troubleshooting) Component Removal Installation: Yes (Step-by-step guides for most components) Overhaul Rebuild: Yes (Detailed instructions for engine and transmission rebuilds) Torque Specifications: Yes (Critical for engine and chassis fasteners) Wiring Diagrams: Yes (Comprehensive electrical schematics) Body Repair Procedures: Yes (Including panel replacement, rust repair guidance) Electrical Component Testing: Yes (Testing of sensors, actuators, relays) Technical Depth Depth: Comprehensive (Covers routine maintenance to complete engine and transmission rebuilds) Diagnostic Tools: Information on necessary diagnostic tools and procedures Diagnostic Codes: Information on retrieving and interpreting diagnostic trouble codes (if applicable via OBD-I) 📊 Manual Specifications File Format File Type: PDF Searchable: Yes (Likely text-searchable PDF) Compatibility: Viewable on most computers, tablets, and smartphones with a PDF reader. Print Quality Quality: High-resolution scans of original documentation Binding Type Binding: Not Applicable (Digital Download) Paper Type Paper: Not Applicable (Digital Download) ⚙️ Engine Specifications Primary Engine Engine Type: Inline 6-cylinder, SOHC (M20 engine family) Displacement: 2.5 Liters (2494 cc) Bore X Stroke: 84.0 mm x 75.0 mm Compression Ratio: 8.5:1 or 9.4:1 (depending on market/variant) Performance Horsepower: 171 hp @ 5800 rpm (approx.) Torque: 167 lb-ft @ 4300 rpm (approx.) Fuel System Fuel Delivery: Bosch L-Jetronic (later Motronic) Fuel Injection Fuel Type: Unleaded Gasoline (Premium Octane recommended) Lubrication Oil Type: Refer to manual for specific BMW LL-98 or equivalent synthetic oil (e.g., 5W-30, 10W-40) Oil Capacity: Approx. 5.5 Liters (with filter change) 🔧 Transmission Standard Type: Getrag 260 5-speed Manual Transmission Optional Type: ZF 4HP22 4-speed Automatic Transmission Features Clutch: Hydraulically actuated single dry plate clutch Transmission Fluid Manual: BMW MTF LT-2 or equivalent GL-4 gear oil (e.g., 75W-90) Transmission Fluid Automatic: Dexron III / Mercon or equivalent ATF 📐 Dimensions Exterior Length: Approx. 4360 mm (171.7 in) Width: Approx. 1675 mm (65.9 in) Height: Approx. 1370 mm (53.9 in) Wheelbase: Approx. 2570 mm (101.2 in) Weights Curb Weight: Approx. 1370 kg (3020 lbs) for manual, slightly more for automatic 🛡️ Safety Features Ratings Crash Testing: Tested by NHTSA and IIHS, though specific ratings for this convertible era may vary. Active Features ABS: Optional Anti-lock Braking System (ABS) on later models Braking System Type: Front ventilated discs, rear solid discs Passive Features Airbags: Driver airbag standard, passenger airbag optional or unavailable on early models. Rollover Protection: Integrated roll-over protection structure behind seats 💡 Technology Features Infotainment Audio System: Factory cassette or radio systems; upgrades common Climate Control: Manual or optional automatic climate control Driver Assistance Cruise Control: Optional 🔧 Maintenance Service Intervals Oil Change Interval: Every 7,500 - 10,000 miles or 12 months (refer to manual for precise interval based on driving conditions) Spark Plug Replacement: Every 30,000 - 60,000 miles (depending on spark plug type) Timing Belt Replacement: Not Applicable (M20 engine uses a timing chain) Fluid Specifications Coolant Type: BMW Blue Antifreeze/Coolant (G48) or equivalent ethylene glycol based coolant Brake Fluid Type: DOT 4 (low viscosity recommended) Power Steering Fluid: BMW Power Steering Fluid (P/N 83 29 0 429 576) or Pentosin CHF 11S/202 Known Issues Heater Core Leaks: Common failure point, leading to coolant smell and fogging windows. Rust Susceptibility: Wheel arches, rocker panels, and...