🏷️ Basic Information Identification Make: BMW Model: 735i / 735iL Year: 1988 Generation Chassis Code: E32 Codes Engine Code: M30B34 👋 Introduction Market Position Segment: Full-size Luxury Sedan Target Audience: Affluent buyers seeking performance, luxury, and advanced engineering Competitive Analysis Competitors: Mercedes-Benz S-Class (W126), Jaguar XJ6, Lexus LS 400 (emerging competitor) Key Features Design Philosophy: German engineering, driver-focused cockpit, refined ride quality, understated luxury Technology Highlight: Introduction of CAN bus (Controller Area Network) in later E32 models, advanced onboard computer, available heated seats, optional ABS 📋 Manual Details Coverage Areas Primary Coverage: All mechanical and electrical systems of the 1988 BMW 735i and 735iL Secondary Coverage: Bodywork, diagnostics, troubleshooting, specifications Page Count Estimated Pages: Hundreds (exact count not specified but implied to be extensive) Manual Type Type: Factory Service Repair Manual Language Language: English (implied by typical factory manual distribution) Format Format: Downloadable PDF 📖 Manual Coverage Systems Covered Engine: Detailed diagnostics, overhaul, cooling, lubrication, fuel, ignition, emissions control Transmission: Automatic transmission (e.g., ZF 4HP22) repair, fluid service, diagnostics Drivetrain: Driveshaft, differential, rear axle assembly repair and maintenance Suspension: Front and rear suspension components, shock absorbers, springs, control arms, alignment specifications Steering: Power steering system diagnostics, repair, steering gear, pump, hoses Brakes: Hydraulic system, ABS (Anti-lock Braking System) diagnostics and repair, brake fluid specifications, rotor and pad replacement Electrical: Complete wiring diagrams, starter, alternator, battery, lighting, power windows, central locking, climate control electrics Bodywork: Panel removal, door mechanisms, glass replacement, trim details Climate Control: HVAC system operation, troubleshooting, refrigerant handling (R12 for this era), component replacement Procedures Included Maintenance: Scheduled maintenance, oil changes, filter replacements, spark plug service, belt inspection/replacement Troubleshooting: Diagnostic charts for common problems, symptom-based troubleshooting guides Repair: Step-by-step repair instructions for all major components and systems Overhaul: Engine and transmission overhaul procedures, complete component disassembly and reassembly Diagnostics: Electrical system diagnostics using wiring diagrams, basic mechanical diagnostics Technical Depth Depth: Comprehensive, from basic maintenance to full engine and transmission rebuilds Diagnostic Tools: Implied use of factory diagnostic procedures, though electronic diagnostic tools of the era were limited 📊 Manual Specifications File Format File Type: PDF Searchability: Likely text-searchable if a properly OCR'd PDF Print Quality Print Ability: High-quality, printable pages Binding Type Binding: Not Applicable (Digital PDF) Paper Type Paper Type: Not Applicable (Digital PDF) ⚙️ Engine Specifications Primary Engine Engine Type: Naturally Aspirated Inline-6 Engine Code: M30B34 Displacement: 3.4 liters (3430 cc) Bore X Stroke: 92.0 mm x 86.0 mm Compression Ratio: 8.0:1 or 8.5:1 (depending on market/spec) Performance Horsepower: 208 hp @ 5700 rpm (approximate) Torque: 224 lb-ft @ 4000 rpm (approximate) Fuel System Fuel Delivery: Bosch L-Jetronic Fuel Injection (Sequential, multi-point) Fuel Type: Premium Unleaded Gasoline (91 Octane or higher) Ignition System Ignition Type: Distributor-based electronic ignition Emissions Control Catalytic Converter: Standard, with oxygen sensor feedback 🔧 Transmission Standard Transmission Type: 4-speed Automatic (ZF 4HP22) Optional Transmission Type: 5-speed Manual (Getrag 265/5) - less common on 735i Features Automatic Modes: Standard and Sport modes Fluid Specs Automatic Transmission Fluid: Dexron III (or equivalent specification; consult manual for exact BMW approval) Fluid Capacity Automatic Transmission Fluid Capacity: Approximately 9-10 liters (dry fill, consult manual for exact capacity and fill procedure) 📐 Dimensions Exterior Wheelbase 735I: 2830 mm (111.4 inches) Wheelbase 735Il: 3030 mm (119.3 inches) Length 735I: 4950 mm (194.9 inches) Length 735Il: 5150 mm (202.8 inches) Width: 1800 mm (70.9 inches) Height: 1400 mm (55.1 inches) Weights Curb Weight 735I: Approx. 1650 kg (3638 lbs) Curb Weight 735Il: Approx. 1700 kg (3748 lbs) Wheel Specs Wheel Bolt Pattern: 5x120mm Center Bore: 72.5mm Tire Specs Standard Tire Size: 205/65VR15 or 225/55VR15 (depending on trim/options) 🛡️ Safety Features Ratings Crash Test Ratings: NHTSA ratings for this era are not directly comparable to modern standards; focused on passive safety features. Active Features ABS: Optional Anti-lock Braking System (ABS) Passive Features Airbags: Driver airbag standard from mid-production, passenger airbag optional/later Seatbelts: 3-point inertia-reel seatbelts front and rear Chassis Reinforcement: Integrated crumple zones and reinforced safety cage 💡 Technology Features Infotainment Audio System: High-fidelity cassette radio system, often with premium sound options (e.g., Nakamichi). Navigation: Very early, rudimentary onboard computer systems, no GPS navigation in the modern sense. Driver Assistance Cruise Control: Standard electronic cruise control. Parking Assist: Rear parking sensors (optional on some models). Connectivity Telematics: No integrated connectivity or Bluetooth. 🔧 Maintenance Service Intervals Oil Change Interval: Typically every 10,000-15,000 km (6,000-9,000 miles) or annually, depending on driving conditions and oil quality. Spark Plug Replacement: Every 40,000-50,000 km (25,000-30,000 miles) (refer to manual for specific plug type and gap). Coolant Flush: Every 2-3 years or 40,000-60,000 km. Fluid Specifications Engine Oil Type: SAE 10W-40 or 15W-40 API SG/SH or higher (consult manual for specific BMW LL specification). Engine Oil Capacity: Approximately 6.5 liters (6.9 US quarts) with filter change. Coolant Type: Ethylene glycol-based antifreeze, typically a 50/50...