🏷️ Basic Information Identification Make: BMW Model: 325i Year: 1988 Generation Chassis Code: E30 Generation Name: Second Generation Codes Engine Code: M20B25 👋 Introduction Market Position Vehicle Segment: Compact Executive Sedan/Coupe Target Audience: Enthusiasts, DIY mechanics, BMW owners seeking to maintain or restore their vehicle Competitive Analysis Competitors 1988: Mercedes-Benz 190E, Audi 80/90, Acura Integra, Volvo 240 series Key Features Vehicle Philosophy: BMW's 'Ultimate Driving Machine' ethos, emphasizing performance and handling Manual Value Proposition: Empowers owners to perform complex repairs and maintenance, saving on dealership costs and preserving vehicle value 📋 Manual Details Coverage Areas General Coverage: Full service, repair, maintenance, rebuilding, refurbishing, restoration Diagnostic Coverage: Comprehensive diagnostic procedures Page Count Estimated Pages: 1500+ Manual Type Type: Full Service Repair Manual Language Language: English Format Format: Digital (Likely PDF) 📖 Manual Coverage Systems Covered Engine: Engine overhaul, timing belt, cooling system, fuel injection (Bosch Motronic), lubrication, exhaust Transmission: Manual and Automatic transmission service, clutch, driveshafts, differentials Brakes: Disc brake overhaul (front and rear), ABS (if equipped), parking brake Suspension: Front struts, rear shock absorbers, control arms, bushings, sway bars Steering: Power steering system, steering rack, tie rods Electrical: Complete wiring diagrams, starter, alternator, battery, lighting, ignition, gauges, onboard computer (if applicable) Body: Body panel alignment, interior trim, door mechanisms, glass replacement, convertible top (if applicable) HVAC: Heating, ventilation, and air conditioning system service and repair Procedures Included Maintenance: Oil changes, filter replacements, fluid checks and changes, spark plug replacement, tune-ups Troubleshooting: Diagnostic charts, symptom-based troubleshooting, electrical issue diagnosis Repair: Component replacement, system overhauls, specific part repairs Rebuilding: Engine rebuild procedures, transmission rebuilds Restoration: Guidance for bringing the vehicle back to original specifications Technical Depth Depth Level: Comprehensive (from basic maintenance to full engine/transmission rebuilds) Detail Level: Includes torque specifications, clearances, diagnostic trouble codes (DTCs), and component identification 📊 Manual Specifications File Format File Type: PDF (Assumed) Searchability: Searchable text content for quick information retrieval Print Quality Printability: Printable pages for workshop use Binding Type Binding: N/A (Digital Format) Paper Type Paper Quality: N/A (Digital Format) ⚙️ Engine Specifications Primary Engine Engine Type: Inline 6-Cylinder, SOHC (M20 series) Displacement: 2.5 Liters (2494 cc) Bore X Stroke: 84 mm x 75 mm Compression Ratio: 8.5:1 Valvetrain: Single Overhead Camshaft (SOHC), 2 valves per cylinder Performance Horsepower Hp: 168 hp @ 5800 rpm (approx.) Torque Lb Ft: 225 Nm (approx. 166 lb-ft) @ 4500 rpm Fuel System Fuel Delivery: Bosch Motronic Electronic Fuel Injection (EFI) Fuel Type: Unleaded Gasoline (Premium Recommended) Ignition System: Electronic Ignition with Distributor 🔧 Transmission Standard Transmission Type Std: Getrag 260 5-Speed Manual Transmission Optional Transmission Type Opt: ZF 4HP22 4-Speed Automatic Transmission Features Clutch Type: Hydraulically actuated single dry plate Manual Fluid Type: BMW Manual Transmission Fluid (MTF) LT-3 or equivalent (e.g., Castrol BOT 402) Automatic Fluid Type: Dexron III or equivalent ATF Final Drive: Limited Slip Differential (LSD) optional on some models, standard open differential 📐 Dimensions Exterior Wheelbase Inches: 101.2 in Length Inches: 170.5 in (Sedan), 169.5 in (Coupe) Width Inches: 67.7 in Height Inches: 55.1 in (Sedan), 53.4 in (Coupe) Weights Curb Weight Lbs: 2850 - 3050 lbs (approx. depending on body style and options) 🛡️ Safety Features Ratings Crash Test Data: Limited official government crash test data from this era; relies on historical accounts and industry standards of the time. Active Features ABS: Anti-lock Braking System (ABS) available as an option on some models Passive Features Seatbelts: 3-point front seatbelts, 2-point rear seatbelts (later models may have 3-point rear) Body Structure: Reinforced safety cage, crumple zones designed for the era 💡 Technology Features Infotainment Audio System: Factory AM/FM stereo with cassette player, optional amplifier and speaker upgrades. Instrument Cluster: Comprehensive analog gauges including tachometer, speedometer, fuel, and temperature. Driver Assistance ABS Availability: Optional ABS system enhances braking control. Connectivity Connectivity Features: No integrated smartphone connectivity or Bluetooth; basic diagnostics via OBD-I connector. 🔧 Maintenance Service Intervals Oil Change Interval: Every 7,500 - 10,000 miles or annually, whichever comes first (depending on oil type and driving conditions). Timing Belt Replacement: Every 60,000 miles or 4-5 years, critical for M20 engines to prevent catastrophic damage. Coolant Flush: Every 2 years or 30,000 miles. Fluid Specifications Engine Oil Type: API SG or higher, SAE 15W-40 or 10W-40 (check manual for specific climate recommendations). Coolant Type: BMW Blue Antifreeze/Coolant or equivalent (50/50 mix with distilled water). Brake Fluid Type: DOT 4 recommended. Known Issues Common Issue 1: Cooling system leaks (radiator, hoses, water pump), heater core leaks. Common Issue 2: Fuel distributor diaphragm leaks, intermittent fuel pump issues. Common Issue 3: Worn suspension bushings, control arm bushings, and rear trailing arm bushings leading to vague handling and clunks. Common Issue 4: Oil pan gasket and valve cover gasket leaks. Common Issue 5: Check engine light due to airflow meter issues or vacuum leaks. 📚 Vehicle History Brand Heritage...