🏷️ Basic Information Identification Make: Porsche Model: 928 Product Name: 1975-1995 Porsche 928 Workshop Service Repair Manual Codes Chassis Codes: 928, 928S, 928S4, 928GT, 928GTS Generation First Generation Years: 1978-1982 Second Generation Years: 1980-1986 Third Generation Years: 1984-1987 Fourth Generation Years: 1987-1991 Fifth Generation Years: 1992-1995 👋 Introduction Market Position Segment: Luxury Grand Tourer (GT) Positioning: Porsche's flagship model, designed to compete with luxury coupes and sedans from European and American manufacturers, offering a blend of performance, comfort, and style. Competitive Analysis Key Competitors: Jaguar XJ-S, Mercedes-Benz SLC/SEC, BMW 6 Series, Maserati Quattroporte, Aston Martin Lagonda. Key Features Design Philosophy: Front-engine, rear-wheel drive layout; transaxle design for optimal weight distribution; innovative 'transaxle' concept. Innovation: Early adoption of advanced materials, aerodynamic design, sophisticated suspension systems, and integrated comfort features. Manual Value Proposition: An inexpensive way to keep a complex and sophisticated vehicle in proper working order, empowering owners and mechanics with essential repair and maintenance information. 📋 Manual Details Coverage Areas Years Covered: 1975, 1976, 1977, 1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995 Page Count Estimated Pages: High (Detailed workshop manuals for this era can range from 1000-2500+ pages across multiple volumes or sections. Specific page count not provided, but coverage implies comprehensive detail.) Manual Type Type: Workshop Service Repair Manual (Factory Service Manual equivalent) Language Language: English Format File Format: PDF Delivery Method: Instant Download 📖 Manual Coverage Systems Covered Engine Mechanical: Engine overhaul, cylinder head, block, pistons, crankshaft, camshafts, valve train, lubrication system, cooling system, fuel injection system (K-Jetronic, Motronic), emissions control. Transmission Drivetrain: Automatic Transaxle (e.g., ZF 4HP22) and Manual Transaxle (e.g., G28/10, G28/11), clutch, driveshafts, differential, axle shafts. Electrical System: Wiring diagrams, starting system, charging system, ignition system, lighting, instrumentation, power windows, mirrors, seats, climate control, ABS, cruise control. Suspension Steering: Front and rear suspension components, shock absorbers, springs, control arms, bushings, power steering system, steering rack, wheel alignment specifications. Brakes: Brake system diagnostics, master cylinder, brake calipers, rotors, pads, brake lines, parking brake, ABS system components. Body Chassis: Body panel repair, doors, hood, trunk, bumpers, glass, interior trim, chassis lubrication points, rust prevention. HVAC: Air conditioning system diagnosis, refrigerant, compressor, evaporator, condenser, heating system, blower motor, controls. Procedures Included Maintenance: Routine maintenance tasks, fluid changes (oil, coolant, brake fluid, transmission fluid), filter replacements, spark plug replacement, belt inspection/replacement. Troubleshooting: Diagnostic procedures for common problems, fault codes, electrical system diagnostics, engine performance issues, driveline complaints. Repair: Detailed step-by-step repair instructions for all major mechanical and electrical components, component removal and installation. Diagnostics: Advanced diagnostic techniques, use of specialized tools, troubleshooting guides based on symptoms. Specifications Data: Torque specifications, clearances, fluid capacities, electrical resistance values, performance specifications. Technical Depth Depth: Comprehensive. Covers everything from basic maintenance to complete engine and transmission rebuilds, electrical system troubleshooting, and bodywork. 📊 Manual Specifications File Format File Type: PDF Print Quality Printability: Fully Printable Zoom Capability: YES (Zoom IN/OUT functionality) Binding Type Binding: Digital (N/A for PDF, but implies accessible and usable in digital format) Paper Type Paper Type: N/A (Digital PDF format) Requirements Software Requirements: Adobe PDF Reader & WinZip Operating System Compatibility: All Versions of Windows & Mac ⚙️ Engine Specifications Primary Engine Engine Type: V8 (M44 engine family) Displacement Early: 4.5 Liters (4474 cc) Displacement Later: 5.0 Liters (4960 cc - 928S4), 5.4 Liters (5392 cc - 928GTS) Performance Early Horsepower Early: 219-234 hp (depending on market and emissions controls) Torque Early: 280-290 lb-ft Performance Later Horsepower Late: 306 hp (928S4), 326 hp (928GT), 345 hp (928GTS) Torque Late: 331 lb-ft (928S4), 340 lb-ft (928GT), 369 lb-ft (928GTS) Fuel System Fuel Delivery Early: Mechanical Fuel Injection (Bosch K-Jetronic) Fuel Delivery Later: Electronic Fuel Injection (Bosch Motronic) Engine Layout Layout: Front-mounted, V8 configuration Engine Codes Engine Codes: M44.01, M44.03, M44.09, M44.10, M44.11, M44.12, M44.13, M44.16, M44.18, M44.20, M44.21 🔧 Transmission Standard Transmission Type Early: Automatic Transaxle (e.g., ZF 4HP22) was standard on many early models, with a 5-speed manual available as an option. Transmission Type Later: 5-speed manual (G28/11) became more common, with 4-speed automatic (ZF 4HP22-A) still an option for most models. Optional Optional Transmission: 4-speed Automatic Transaxle (ZF 4HP22/4HP22-A) Features Transaxle Design: Integrated engine and transmission unit with rear-mounted transaxle for 50/50 weight distribution. 📐 Dimensions Exterior Length: Approx. 4,650 - 4,800 mm (183.1 - 189.0 in) depending on model year and bumper style. Width: Approx. 1,780 - 1,800 mm (70.1 - 70.9 in) Height: Approx. 1,280 - 1,320 mm (50.4 - 52.0 in) Weights Curb Weight: Approx. 1,500 - 1,700 kg (3,300 - 3,750 lbs) depending on equipment and model year. Gross Vehicle Weight Rating: Typically around 2,000 kg (4,400 lbs). Interior Seating Capacity: 2+2 configuration (two front seats, two smaller rear seats). Cargo Trunk Volume: Moderate, with a hatchback design allowing for flexibility. 🛡️ Safety...