🏷️ Basic Information Identification Make: Porsche Model: 928 Production Years Covered: 1978-1995 Codes Chassis Code: 928 👋 Introduction Market Position Positioning: The Porsche 928 represented Porsche's bold step into the front-engine, V8-powered grand touring segment, challenging established European luxury coupes. Competitive Analysis Competitors: Competed with vehicles such as the Jaguar XJS, Mercedes-Benz SEC coupes, and Aston Martin models of its era. Key Features Innovation: Pioneered the use of transaxle design in a front-engine Porsche for better weight distribution, featured advanced aerodynamics and a robust V8 engine. Value Proposition Benefits: Provides owners and technicians with factory-level repair and maintenance data, enabling significant cost savings and proper vehicle upkeep. 📋 Manual Details Coverage Areas Coverage Scope: Full Service, Repair, and Workshop Procedures Target Audience: Professional Mechanics, Independent Technicians, and Experienced DIY Enthusiasts Page Count Estimated Page Count: Multiple Volumes (Comprehensive) Manual Type Type: Service and Repair Workshop Manual Language Language: English Format File Format: PDF 📖 Manual Coverage Systems Covered Engine Mechanical: Complete disassembly, inspection, repair, and reassembly of all engine components. Engine Electrical: Detailed wiring diagrams, ignition system, starting and charging systems, sensors, and control modules. Emission Control: Diagnosis and repair of emissions systems, including catalytic converters, exhaust gas recirculation (EGR), and evaporative emission control (EVAP). Fuel System: Fuel injection system (CIS, LH-Jetronic), fuel pumps, injectors, pressure regulators, and fuel tank service. Clutch System: Clutch assembly, hydraulics, and operation for manual transmission models. Manual Transaxle: Service and repair of the 5-speed manual transaxle, including gear ratios and internal components. Automatic Transaxle: Diagnosis, service, and repair of the 3-speed and 4-speed automatic transaxles (e.g., 095, 097). Includes torque converter and valve body. Driveshaft Axle: CV joints, driveshafts, and rear axle assembly. Suspension System: Front and rear suspension, shock absorbers, springs, bushings, and alignment procedures. Steering System: Power steering system, steering rack, tie rods, and steering column. Restraint System: Seat belts, airbags (where applicable), and related components. Brake System: Hydraulic system, calipers, rotors, pads, parking brake, and ABS (where applicable). Body Interior Exterior: Body panel repair, door mechanisms, glass, seals, interior trim, and upholstery. Body Electrical: Lighting, power windows, power seats, central locking, mirrors, and dashboard instrumentation. HVAC: Heating, ventilation, air conditioning system service, refrigerant handling, and component replacement. Procedures Included Maintenance: Routine maintenance tasks, fluid changes, filter replacements, and lubrication schedules. Troubleshooting: Step-by-step diagnostic procedures for identifying and resolving common and complex issues. Repair: Detailed instructions for component removal, repair, and reinstallation for all vehicle systems. Diagnostics: Methods for diagnosing electrical faults, engine performance issues, and mechanical failures. Specifications: Torque values, clearances, fluid capacities, and other critical specifications. Wiring Schematics: Comprehensive and detailed electrical wiring diagrams for all vehicle circuits. Technical Depth Depth: Complete from basic maintenance to full engine and transaxle rebuilds. Illustrations Diagrams: Extensive use of clear diagrams and illustrations for visual guidance. 📊 Manual Specifications File Format Compatibility: Compatible with all versions of Windows and Mac. Print Quality Printability: Fully printable, allowing for easy use in a workshop environment. Binding Type Binding Type: Digital (PDF) Paper Type Paper Type: N/A (Digital Format) Features Searchability: Searchable text within the PDF for quick information retrieval. ⚙️ Engine Specifications Primary Engine Engine Type: V8, 90-degree configuration Displacement Early Models: 4.5 Liters (4474 cc) Displacement Later Models: 4.7 Liters (4664 cc), 5.0 Liters (4957 cc), 5.4 Liters (5344 cc) Performance Horsepower Range: Approximately 219 hp to 326 hp depending on year and market. Torque Range: Approximately 278 lb-ft to 350 lb-ft depending on year and market. Fuel System Fuel Delivery Early: Bosch K-Jetronic (CIS) Continuous Injection System Fuel Delivery Later: Bosch LH-Jetronic Fuel Injection (Electronic) 🔧 Transmission Standard Transmission Type Early: 5-Speed Manual Transaxle Optional Transmission Type Optional: 3-Speed and 4-Speed Automatic Transaxle (e.g., ZF 4HP-22) Features Transaxle Design: Rear-mounted transaxle (transmission and differential combined) for optimal weight distribution. 📐 Dimensions Exterior Wheelbase: Approximately 98.4 inches (2500 mm) Length: Varies slightly by year, approximately 177.5 inches (4508 mm) Width: Approximately 70.9 inches (1800 mm) Height: Approximately 50.0 inches (1270 mm) Weights Curb Weight Range: Approximately 3300 - 3800 lbs (1500 - 1725 kg) 🛡️ Safety Features Ratings Crash Test Data: Limited publicly available crash test data for early models due to era; later models benefited from advancements. Active Features ABS: Anti-lock Braking System (ABS) available on later models (e.g., from 1987 onwards). Passive Features Airbags: Driver airbag introduced in later model years (typically 1990s). Seatbelts: Three-point seat belts with pretensioners. 💡 Technology Features Infotainment Audio System: Typically features premium (for its time) Blaupunkt or Becker audio systems with cassette players and early CD integration in later models. Driver Assistance Cruise Control: Standard feature on most models. Connectivity OBD Ii: Not equipped with OBD-II; diagnostics rely on proprietary Porsche diagnostic tools and procedures for earlier models. Later models may have limited early diagnostic connectors. 🔧 Maintenance Service Intervals Oil Change Interval: Typically every 7,500-10,000...