🏷️ Basic Information Identification Make: Porsche Model: 928 Generations: First Generation (1978-1986), Second Generation (1987-1991), Third Generation (1992-1995) Production Years Covered By Manual: 1978-1994 Trim Levels Covered: S, S4, GT, GTS Codes Chassis Codes: 928, 928 S, 928 S4, 928 GT, 928 GTS 👋 Introduction Market Position Vehicle Segment: Front-engined, rear-wheel-drive luxury grand tourer (GT) and sports car. Competitive Analysis Key Competitors: Ferrari 400 GT, Aston Martin V8 Vantage, Jaguar XJS, Mercedes-Benz SLC/SL (R107). Key Features Design Philosophy: Transaxle design for optimal weight distribution, V8 engine for smooth power delivery, luxurious interior, innovative features for its time. Innovation: Pioneered the use of advanced materials, electronic fuel injection, and a transaxle drivetrain layout in a Porsche production car. Manual Value Proposition Target Audience: Porsche 928 owners, DIY mechanics, automotive restoration specialists, Porsche enthusiasts. 📋 Manual Details Coverage Areas Comprehensive Coverage: Engine, Transmission (Manual & Automatic), Fuel System, Ignition System, Cooling System, Lubrication System, Electrical System, Bodywork, Chassis, Suspension, Brakes, Steering, Heating, Air Conditioning, Diagnosis & Troubleshooting. Page Count Total Pages: 2622 Manual Type Manual Category: Workshop Service Repair Manual Language Language: English Format File Format: PDF 📖 Manual Coverage Systems Covered Engine Systems: Crankcase, Crankshaft, Pistons, Cylinder Head, Valve Drive, Lubrication, Cooling, Fuel Supply, Electronic Fuel Injection (EFI), Fuel Mixture Control, Exhaust System, Emission Controls, Starter, Power Supply, Ignition System, DME Diagnosis & Troubleshooting. Transmission Systems: Clutch, Controls, Torque Converter, Manual Transmission (Case, Gears, Shafts), Automatic Transmission (Controls, Case, Gears, Valve Body), Differential, Transaxle System, PSD (Power-Transmitting Differential) Diagnosis & Troubleshooting. Chassis Systems: Front Wheel Suspension, Rear Wheel Suspension, Axle Shafts, Wheels, Tires, Wheel Alignment, Antiblock System (ABS), Brakes (Mechanical & Hydraulics), Steering System. Body And Comfort Systems: Body General, Front Section, Center Section, Rear Section, Lids, Doors, Heater, Air Conditioner. Electrical Systems: Power Supply, Starter, Ignition System, DME Troubleshooting, Alarm System Diagnosis, Wiring Diagrams (1978-1994 specific), Current Flow Diagrams. Procedures Included Maintenance Procedures: Scheduled maintenance, fluid checks and changes, filter replacements, belt adjustments, spark plug replacement, basic diagnostics. Assembly Disassembly: Complete engine rebuilds, transmission overhauls, suspension component replacement, brake system servicing, body panel removal and installation, electrical component replacement. Troubleshooting Diagnostics: Engine performance issues, fuel injection system faults, ignition system malfunctions, transmission shifting problems, electrical gremlins, ABS faults, HVAC system diagnostics. Technical Depth Depth Of Information: Comprehensive, covering routine maintenance to complete mechanical and electrical overhauls. Includes detailed specifications, torque values, special tool requirements, and diagnostic procedures. 📊 Manual Specifications File Format PDF Quality: High Quality PDF Print Quality Printability: All pages are printable Binding Type Delivery Method: Instant Download (No CD-ROM or shipping) Paper Type Physical Format Description: N/A (Digital PDF) Compatibility Operating Systems: All Versions of Windows, Mac, and Linux Requirements Software Requirements: Adobe PDF Reader ⚙️ Engine Specifications Primary Engine Engine Family: Porsche V8 (M28 series) Displacement Early Models: 4.5 Liters (4474 cc) Displacement Later Models: 4.7 Liters (4664 cc), 5.0 Liters (4982 cc), 5.4 Liters (5334 cc) Performance Horsepower Range: Approximately 219 hp (early) to 345 hp (GTS). Torque Range: Approximately 245 lb-ft (early) to 369 lb-ft (GTS). Fuel System Fuel Delivery: Bosch L-Jetronic and Motronic electronic fuel injection (EFI) systems. Engine Layout Configuration: Front-mounted, V8 Engine Components Valve Train: Overhead Camshafts (OHC), belt-driven. Engine Features Cooling System: Water-cooled, front radiator, typically twin electric fans. 🔧 Transmission Standard Manual Transmission Offered: Yes, initially a 4-speed manual, later replaced by a 5-speed manual in some markets/trims. Optional Automatic Transmission Offered: Yes, a 3-speed automatic (early) and later a 4-speed automatic (e.g., Tiptronic in later models). Features Drivetrain: Rear-wheel drive with transaxle design (transmission and differential integrated at the rear). Differential: Limited-slip differential (LSD) or Porsche Stability Differential (PSD) on select models. 📐 Dimensions Exterior Length: Approximately 4680-4770 mm (varies by year and model). Width: Approximately 1775-1840 mm (varies by year and model). Height: Approximately 1280-1320 mm (varies by year and model). Weights Curb Weight: Approximately 1500-1700 kg (varies by year and model). Wheelbase: Approximately 2440 mm. 🛡️ Safety Features Ratings Crash Test Information: No standardized crash test ratings from modern agencies exist for this era; relied on internal Porsche safety engineering. Active Features Antilock Brakes: Available on later models (ABS). Passive Features Airbags: Driver's side airbag introduced on S4 models (late 1980s/early 1990s). Seatbelts: 3-point seatbelts with front pretensioners. Structural Features Chassis Design: Reinforced safety cage, crumple zones. 💡 Technology Features Infotainment Audio System: Integrated audio systems, often with premium sound options from brands like Blaupunkt or Becker. Cassette tape players were standard for much of its run. Climate Control: Automatic climate control (ACC) became available and refined throughout the model run, offering precise temperature and air distribution management. Driver Assistance Cruise Control: Standard on most models. Power Features: Power windows, power mirrors, power seats (often with memory), power steering, central locking. Connectivity Early Electronics: While lacking modern smartphone integration, early use of advanced engine management and...