🏷️ Basic Information Identification Make: BMW Model: 325i Year: 1990 Chassis Code: E30 Product Name: BMW 325 325i 1990 Workshop Repair Service Manual 👋 Introduction Market Position Segment: Compact executive sports sedan Target Audience: Enthusiasts and owners seeking to perform their own maintenance and repairs on a classic BMW. Competitive Analysis Competitors: Mercedes-Benz 190E, Audi 80/90, Alfa Romeo 75, Saab 900 Key Features Performance Appeal: Renowned for its balanced chassis, engaging driving dynamics, and reliable inline-six engines. Design Language: Classic BMW 'Bangle' era design with clean lines and a driver-focused interior. 📋 Manual Details Coverage Areas Vehicle Coverage: All models, engines, trim levels, and transmission types for the 1990 BMW 325/325i Page Count Estimated Page Count: High, comprehensive coverage expected to exceed 1000 pages for a full workshop manual. Manual Type Type: Workshop Repair Service Manual Language Language: English Format Format: PDF Download 📖 Manual Coverage Systems Covered Engine: M20B25 2.5L inline-six engine (including fuel injection, ignition, cooling, lubrication, exhaust) Transmission: Getrag 260 5-speed manual and ZF 4HP22 4-speed automatic transmission (including overhaul, diagnosis, fluid specs) Drivetrain: Rear-wheel drive, limited-slip differential (LSD) options, driveshafts, CV joints Suspension: Front MacPherson struts, rear semi-trailing arms, springs, dampers, bushings, anti-roll bars Brakes: Front ventilated discs, rear solid discs (ABS system), brake hydraulics, parking brake Steering: Power-assisted rack and pinion steering system Electrical System: 12V system, alternator, starter, battery, wiring diagrams, fuses, relays, lighting, instrumentation Fuel System: Bosch Motronic fuel injection, fuel pump, injectors, fuel filter, fuel tank Cooling System: Radiator, fan, water pump, thermostat, coolant hoses Exhaust System: Exhaust manifolds, catalytic converter, mufflers, pipes Body And Chassis: Body panels, doors, hood, trunk, glass, frame, rust prevention HVAC: Heating, ventilation, and air conditioning system components and operation Procedures Included Maintenance: Scheduled maintenance, oil changes, fluid checks, filter replacements, spark plugs, belt tensioning Troubleshooting: Diagnostic procedures for common issues, fault codes (if applicable), drivability problems Repair: Step-by-step instructions for component removal, installation, and overhaul Diagnostics: Engine performance diagnosis, electrical system troubleshooting, clutch and brake system checks Specifications: Torque specifications, clearances, alignments, electrical resistance values Technical Depth Depth: Comprehensive, covering from basic maintenance to complete engine and transmission rebuilds, including electrical diagnostics and bodywork. 📊 Manual Specifications File Format Quality: High-resolution PDF, allowing for clear text and image reproduction when printed. Searchable: Likely text-searchable PDF for efficient information retrieval. Print Quality Printability: Designed to be printable for workshop use. Binding Type Digital Format: N/A (Digital Download) Paper Type Digital Format: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Engine Code: M20B25 Configuration: 2.5L (2494 cc) SOHC 12-valve Inline-6 Performance Horsepower: 168 hp @ 5800 rpm (approx.) Torque: 225 Nm (166 lb-ft) @ 4300 rpm (approx.) Fuel System Injection System: Bosch Motronic ML-1.3 Electronic Fuel Injection Fuel Type: Unleaded Premium Gasoline (91+ octane recommended) Engine Management Ignition System: Electronic Ignition, Distributorless Ignition System (DIS) on some later M20s, but typically distributor on 1990 model. Redline: Approx. 6500 rpm 🔧 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 Differential: Hypoid rear axle, optional 25% limited-slip differential (LSD) 📐 Dimensions Exterior Length: 4330 mm (170.5 in) Width: 1680 mm (66.1 in) Height: 1380 mm (54.3 in) Wheelbase: 2621 mm (103.2 in) Weights Curb Weight: Approx. 1340 kg (2954 lbs) for manual transmission 🛡️ Safety Features Ratings Crash Test Results: No specific NHTSA ratings available for this era, but E30 chassis known for robust construction. Active Features ABS: Anti-lock Braking System (ABS) - Standard on most 1990 325i models Passive Features Airbags: Driver-side airbag typically standard for 1990 models. Seatbelts: Three-point inertia-reel seatbelts Chassis Design Front Impact Structure: Deformation zones designed for impact energy absorption. 💡 Technology Features Infotainment Audio System: Factory premium audio system, often with cassette player and basic radio tuner. Display: Analog gauges and basic warning lights, no digital displays. Driver Assistance ABS: Standard ABS system is the primary electronic driver assistance feature. Connectivity Aux Input: No factory auxiliary input; aftermarket solutions often required for modern audio connectivity. 🔧 Maintenance Service Intervals Oil Change: Typically every 7,500 - 10,000 miles (12,000 - 16,000 km) or annually, depending on driving conditions. Spark Plugs: Check/replace every 30,000 miles (48,000 km) - refer to manual for specific plug type. Coolant Flush: Every 2-3 years or 30,000 - 50,000 miles (48,000 - 80,000 km). Timing Belt: M20 engines use a timing belt, typically recommended replacement every 50,000 - 60,000 miles (80,000 - 96,000 km) or 5 years. Crucial to follow manual recommendations to avoid catastrophic engine damage. Fluid Specifications Engine Oil: SAE 15W-40 or 15W-50 API SF or SG (check manual for exact specification). Engine Oil Capacity: Approx. 4.25 liters (4.5 US quarts) with filter change. Coolant: BMW Blue Antifreeze/Coolant (50/50 mix with distilled water). Transmission Fluid Manual: API GL-4 SAE 75W-90 gear oil (e.g., Red...