🏷️ Basic Information Identification Make: BMW Model: 325 / 325i Year: 1988 Codes Chassis Code: E30 Engine Code Common: M20B25 👋 Introduction Market Position Segment: Compact Executive Sports Sedan/Coupe Target Audience: Enthusiasts, DIY mechanics, and professional automotive technicians Competitive Analysis Key Competitors: Mercedes-Benz 190E, Audi 80/90, Alfa Romeo 75, Volvo 240/740 Key Features Vehicle Strengths: Renowned driving dynamics, balanced chassis, powerful inline-six engine, quality build Manual Value Proposition Value: Essential for accurate maintenance, troubleshooting, and repairs, preserving the vehicle's performance and longevity 📋 Manual Details Coverage Areas Primary Coverage: BMW 325 and 325i (E30 chassis) Specific Years Covered: 1988 Model Year Page Count Estimated Pages: Hundreds (specific number not provided, but implies comprehensive) Manual Type Type: Factory Service Repair Manual Language Language: English Format Format: PDF Download 📖 Manual Coverage Systems Covered Engine: Engine mechanical, engine electrical, fuel injection (Bosch Motronic), ignition, cooling, lubrication, exhaust Transmission: Manual and Automatic transmission repair, clutch system, drive shafts, differentials Suspension Steering: Front and rear suspension, steering gear, power steering system, wheel alignment Brakes: Brake system components, hydraulic system, ABS (where equipped), parking brake, brake adjustments and repairs Electrical: Complete electrical system schematics, starter, alternator, battery, lighting, instrumentation, wiring diagrams Body: Body construction, exterior trim, interior trim, doors, windows, sunroof, heating and air conditioning Procedures Included Maintenance: Scheduled maintenance, fluid checks and changes, filter replacements, tune-up procedures Diagnostics: Troubleshooting guides, symptom-based diagnostics, fault code interpretation (for Motronic) Repair: Detailed step-by-step repair instructions for all major systems, component removal and installation Overhaul: Engine and transmission overhaul procedures, full rebuild instructions Specifications: Torque specifications, clearances, fluid capacities, electrical specifications Technical Depth Depth: Comprehensive, from basic maintenance to complete engine and transmission rebuilds, including diagnostics and electrical troubleshooting 📊 Manual Specifications File Format Format: PDF Searchability: Likely text-searchable (standard for factory PDFs) Print Quality Quality: Official factory quality, designed for clear reproduction Binding Type Binding: N/A (Digital Download) Paper Type Paper: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Engine Type: Inline 6-cylinder, DOHC (Double Overhead Camshaft) Displacement: 2.5 Liters (2494 cc) Bore X Stroke: 84.0 mm x 75.0 mm Compression Ratio: 8.5:1 (typical) Performance Horsepower: 168 hp @ 5800 rpm (approx.) Torque: 225 Nm (166 lb-ft) @ 4300 rpm (approx.) Fuel System Fuel Delivery: Bosch Motronic Electronic Fuel Injection (EFI) Fuel Type: Unleaded Gasoline (Premium Recommended) Ignition System Type: Electronic Ignition (BMW 'Flat Cap' System) 🔧 Transmission Standard Transmission Type: Getrag 260 5-Speed Manual Optional Transmission Type: ZF 4HP22 4-Speed Automatic Features Clutch: Hydraulically actuated single dry plate clutch (manual) Final Drive Ratio: 3.73:1 (typical for manual), 3.25:1 (typical for auto) Fluid Specifications Manual Transmission Fluid: BMW recommended manual transmission fluid (e.g., Pentosin MTF LT-2 or equivalent GL-4) Automatic Transmission Fluid: Dexron II (or equivalent) 📐 Dimensions Exterior Wheelbase: 2620 mm (103.2 inches) Length: 4340 mm (170.9 inches) Width: 1675 mm (65.9 inches) Height: 1380 mm (54.3 inches) Weights Curb Weight: Approx. 1350 kg (2976 lbs) Gross Vehicle Weight: Approx. 1800 kg (3968 lbs) Towing Capacity: Not typically specified or recommended for this model 🛡️ Safety Features Ratings NHTSA Ratings: Not readily available for this model year from modern standards Active Features ABS: Optional Anti-lock Braking System (ABS) Passive Features Airbags: Driver's side airbag (optional, became standard later) Seatbelts: 3-point inertia-reel seatbelts front and rear Chassis Design: Reinforced passenger cell, crumple zones 💡 Technology Features Infotainment Audio System: Factory cassette stereo system with optional CD player (rare). Amplifier system may be present. Display: Analog gauges for speedometer, tachometer, fuel, and temperature. Warning lights for various systems. Driver Assistance Cruise Control: Optional on some models. Check Control: BMW's 'Check Control' system provides visual and audible alerts for various vehicle functions (lights, fluid levels, etc.). Connectivity Connectivity Features: None by modern standards. Factory options might include power windows/locks/mirrors, sunroof. 🔧 Maintenance Service Intervals Oil Change Interval: Typically every 5,000 - 7,500 miles or 6-12 months, depending on driving conditions and oil used. Spark Plug Replacement: Approx. 30,000 miles (depending on plug type) Timing Belt Replacement: The M20 engine uses a timing chain, not a belt, requiring less frequent replacement but occasional tensioner/guide checks. Fluid Specifications Engine Oil Capacity: Approx. 4.25 Liters (4.5 Quarts) with filter change Engine Oil Type: SAE 15W-40 or 10W-40 API SG/SH rated synthetic or high-quality conventional oil (consult manual for exact BMW specs) Coolant Type: BMW Blue Longlife Coolant (or equivalent ethylene glycol based antifreeze mixed 50/50 with distilled water) Brake Fluid Type: DOT 3 or DOT 4 Known Issues Fuel Pump: Degradation of plastic components in early fuel pumps can lead to failure. Heater Core: Prone to leaks, often requiring dashboard removal for replacement. Rubber Components: Hoses, seals, and bushings can degrade over time due to age and exposure. Oil Pan Gasket: Common leak point on the M20 engine. Head Gasket: Can fail under severe overheating conditions, though less common than other issues...