🏷️ Basic Information Identification Make: Porsche Model: 928 Variant Coverage: 928S, 928S2, 928S4, 928GT, 928GTS Production Years Covered: 1977-1995 Codes Chassis Codes: 928 (early), 928S, 928S2, 928S4, 928GT, 928GTS 👋 Introduction Market Position Segment: Luxury Grand Tourer (GT) Original Intent: Replace the 911 as Porsche's flagship model, offering comfort, performance, and advanced technology. Competitive Analysis Competitors: Ferrari 400/412, Aston Martin V8 Vantage, Jaguar XJ-S, BMW 8 Series (E31). Key Features Design Philosophy: Front-engine, rear-wheel drive layout, transaxle design for optimal weight distribution. Technology Introduction: One of the first production cars with advanced diagnostics, ABS, and a sophisticated engine management system. Uniqueness: The only front-engine V8 sports car produced by Porsche. 📋 Manual Details Coverage Areas Technical Coverage: Comprehensive workshop service and repair Page Count Total Pages: 2600+ Manual Type Type: Workshop Service Repair Manual Language Primary Language: English Format Digital Format: Searchable, Printable, Bookmarked iPad-ready PDF 📖 Manual Coverage Systems Covered Engine: V8 Engine Mechanical, Fuel System, Ignition System, Cooling System, Lubrication System, Exhaust System, Engine Management (DME/EFI) Transmission: Automatic Transaxle (4-speed/5-speed), Manual Transaxle (5-speed), Clutch System, Driveshafts, CV Joints Chassis And Suspension: Front Suspension (McPherson Strut), Rear Suspension (Semi-trailing Arm), Power Steering System, Wheel Alignment Specifications Brakes: Brake System Hydraulics, ABS (Anti-lock Braking System), Brake Disc and Pad Replacement, Brake Caliper Overhaul Electrical: Wiring Diagrams, Lighting System, Starting System, Charging System, Ignition System, Instrumentation, Power Windows, Power Seats, HVAC Controls, Cruise Control, Diagnostic Connectors Body And Interior: Body Panels, Doors, Hood, Trunk, Bumpers, Interior Trim, Seats, Safety Belts, HVAC System Components HVAC: Air Conditioning System, Heater System, Climate Control Fuel System: Fuel Pump, Fuel Injectors, Fuel Pressure Regulator, Fuel Tank, Fuel Lines Cooling System: Radiator, Water Pump, Thermostat, Coolant Hoses, Cooling Fan Lubrication System: Oil Pump, Oil Filter, Oil Cooler, Oil Pan Procedures Included Maintenance: Routine Service Checks, Oil Changes, Filter Replacements, Spark Plug Service, Belt Replacement Diagnostics: Troubleshooting Charts, Fault Code Interpretation, Component Testing Procedures Repair And Rebuild: Engine Rebuild, Transmission Overhaul, Suspension Component Replacement, Brake System Repair, Electrical Component Repair Installation: Component Installation Guidelines, Timing Belt Replacement, Accessory Belt Replacement Adjustment: Valve Clearance Adjustment, Idle Speed Adjustment, Parking Brake Adjustment Technical Depth Depth: Comprehensive, covering all aspects from basic maintenance to complete engine and transmission rebuilds. 📊 Manual Specifications File Format File Type: PDF Searchability: Fully searchable text Printability: Printable pages Device Compatibility: iPad-ready, compatible with most digital devices Bookmarking: Internal bookmarks for easy navigation Print Quality Quality: High-resolution digital rendering Binding Type Binding: Digital Download (Not physically bound) Paper Type Paper: Digital (Not applicable to physical print) ⚙️ Engine Specifications Primary Engine Engine Type: V8, Naturally Aspirated Displacement Initial: 4.5 Liters (4474 cc) Displacement Later Models: 4.7L, 5.0L (928S4/GT/GTS) Power Early Models: Approx. 219-234 hp (depending on market and fuel injection) Power 928S: Approx. 300-310 hp (Euro spec) Power 928S4: Approx. 316 hp @ 5500 rpm Power 928Gt: Approx. 326 hp @ 5500 rpm Power 928Gts: Approx. 375 hp @ 5500 rpm Performance Torque 928Gts: Approx. 398 lb-ft @ 4250 rpm Fuel System Injection Type: Bosch L-Jetronic (early), Bosch KE-Jetronic (later), Bosch Motronic (S4/GT/GTS) Fuel Type: Unleaded Gasoline (Premium Octane) Engine Management ECU Coverage: Detailed information on engine control units and their functions. 🔧 Transmission Standard Transmission Type Early: 4-Speed Automatic Transaxle Optional Transmission Type Manual: 5-Speed Manual Transaxle (available on many models, standard on 928GT) Transmission Type Automatic Later: 5-Speed Automatic Transaxle (available on some later models) Features Transaxle Design: Integrated gearbox and differential at the rear axle for 50/50 weight distribution. Transmission Fluid Spec Auto: Dexron III (or equivalent) Transmission Fluid Spec Manual: GL-4 or GL-5 Gear Oil (SAE 75W-90 or 80W-90) 📐 Dimensions Exterior Length: Approx. 4680 mm (184.3 in) Width: Approx. 1780 mm (70.1 in) Height: Approx. 1280 mm (50.4 in) Wheelbase: Approx. 2400 mm (94.5 in) Weights Curb Weight Approx: 1580-1700 kg (3483-3748 lbs) depending on model and options 🛡️ Safety Features Ratings Crash Test Data: While official ratings are scarce by modern standards, Porsche designed the 928 with significant safety considerations for its era. Active Features ABS: Anti-lock Braking System (standard on most later models). Traction Control: Optional on some later models (e.g., 928GT). Passive Features Airbags: Driver airbag (standard from late 1980s onwards), passenger airbag optional/standard on late models. Seat Belts: 3-point inertia reel seat belts with pre-tensioners. Rollover Protection: Reinforced A-pillars and roof structure. 💡 Technology Features Infotainment Audio System: Integrated Porsche Hi-Fi sound system, often with cassette player and Blaupunkt or Becker head units. Climate Control: Automatic climate control with electronic temperature regulation on later models. Driver Assistance Cruise Control: Standard on most models, electronically controlled. Connectivity Diagnostics Port: Early OBD-I style diagnostic connectors for engine management system. Innovations Advanced Systems: Integrated diagnostics, ABS, electric seat adjustment, central locking. 🔧 Maintenance Service Intervals Oil Change: Every 7,500 miles (12,000 km) or annually, whichever comes first. Timing Belt:...