🏷️ Basic Information Identification Make: Porsche Model: 928 Production Years Covered: 1978-1994 Body Styles Covered: All styles Codes Chassis Codes: 928, 928S, 928S2, 928S3, 928S4, 928GTS 👋 Introduction Market Position Vehicle Segment: Luxury Grand Tourer (GT) Historical Significance: Porsche's first V8-powered production car, front-engined, rear-wheel-drive layout, departure from the 911's rear-engine configuration. Competitive Analysis Key Competitors: Ferrari 400/412, Aston Martin V8 Vantage, Jaguar XJ-S, Mercedes-Benz SEC models. Key Features Design Philosophy: Comfortable yet sporty grand touring car, advanced engineering for its era, aerodynamic design. Manual Value Proposition: Provides factory-level detail for enthusiasts and mechanics to maintain and repair this complex and iconic Porsche. 📋 Manual Details Coverage Areas Manual Coverage Scope: Comprehensive service, repair, maintenance, and diagnostics for the Porsche 928. Page Count Total Pages: >2,700 Manual Type Type: Factory Service & Repair Manual / Workshop Manual Language Language: English Format Format: PDF 📖 Manual Coverage Systems Covered Engine Mechanical: Complete disassembly, inspection, assembly, torque specifications, timing, lubrication, cooling system, fuel system, exhaust system, emission control systems. Engine Management Control: Fuel injection systems (CIS, Motronic), ignition systems, sensor diagnostics, ECU information, emissions control. Transmission: Automatic Transaxle (Type 928) and Manual Transaxle (where applicable) diagnosis, repair, fluid specifications, torque converter, valve body, internal components. Drivetrain: Front axle, drive shafts, CV joints, differential case assembly, rear axle hub. Suspension: Front and rear suspension systems, control arms, springs, shock absorbers, bushings, wheel alignment specifications. Brakes: Brake system diagnosis, repair, master cylinder, calipers, pads, rotors, parking brake, ABS system (where applicable). Steering: Power steering system diagnosis, repair, steering column, steering rack, linkage. Electrical System: Complete wiring diagrams, troubleshooting procedures, component testing, charging system, starting system, lighting system, combination meter, audio and visual systems. Body And Chassis: Body repair procedures, doors, windows, glass, sunroof system, interior trim, exterior moldings, bumpers, hood, back door. Climate Control: Air conditioning system diagnosis, repair, refrigerant, blower system, heater core, climate control modules. Safety Systems: Supplemental Restraint System (SRS) - airbags, seat belt warning systems, and related sensors. Procedures Included Maintenance: Oil changes, filter replacements, fluid checks and top-offs, spark plug replacement, belt inspections and replacement, brake pad replacement, tire rotations, air filter replacement. Repair: Engine rebuild, transmission overhaul, brake system repair, suspension component replacement, electrical component repair, body panel repair and replacement, interior component repair. Diagnostics: Step-by-step troubleshooting for common and uncommon issues, diagnostic codes, electrical circuit testing, mechanical component testing. Disassembly And Assembly: Complete procedures for disassembling and reassembling all major vehicle components, including detailed illustrations. Specifications And Data: Torque specifications, fluid capacities, recommended fluids, clearances, alignment settings, electrical resistance values. Technical Depth Depth: Comprehensive, from basic preventative maintenance to complete engine and transmission rebuilds, including detailed electrical diagnostics and wiring diagrams. 📊 Manual Specifications File Format Format: PDF Compatibility: Windows, Mac, Linux Print Quality Printability: All pages are printable without restriction. Image Quality: Detailed illustrations, drawings, and photos included. Binding Type Binding: Digital Download (PDF) Paper Type Physical Format: Not applicable (Digital) ⚙️ Engine Specifications Primary Engine Engine Type: V8 Displacement Initial: 4.5 Liters (4474 cc) Displacement Later Models: 4.7L, 5.0L, 5.4L Performance Horsepower Range: Approx. 230 hp to 326 hp (depending on model and market) Torque Range: Approx. 245 lb-ft to 360 lb-ft (depending on model and market) Fuel System Fuel Delivery: Bosch K-Jetronic (CIS) fuel injection, later models with Motronic electronic fuel injection and ignition. Cooling System Cooling Type: Liquid-cooled Engine Management Ignition System: Distributor-based (early), Distributorless (later variants with Motronic). 🔧 Transmission Standard Transmission Type Early: 3-Speed Automatic (Type 928) Optional Transmission Type Manual: 5-Speed Manual (available on select models and markets, often referred to as 'dogleg' on early cars). Features Transaxle Design: Rear-mounted transaxle for weight distribution. Fluid Specifications Automatic Transmission Fluid: Refer to manual for specific ATF type (e.g., Dexron III or equivalent for later models). Manual Transmission Fluid: Refer to manual for specific gear oil specifications. 📐 Dimensions Exterior Length: Varies by model year, approx. 4500-4700 mm Width: Varies by model year, approx. 1775-1800 mm Height: Varies by model year, approx. 1280-1320 mm Weights Curb Weight: Approx. 1450-1650 kg Wheelbase: Approx. 2400-2430 mm Wheel Bolt Pattern: 5x130 mm Tire Size Example: 225/50VR16 (early), 225/50ZR16 front / 245/45ZR16 rear (S4) 🛡️ Safety Features Ratings Crash Test Data: Specific official crash test ratings for this era are limited, but designed with crumple zones and structural integrity typical of Porsche. Active Features ABS: Anti-lock Braking System (ABS) introduced on later models (S3, S4 onwards). Passive Features Airbags: Driver-side airbag introduced in 1987. Passenger airbag on later models. Seat Belts: Three-point inertia-reel seat belts with pre-tensioners on later models. 💡 Technology Features Infotainment Audio System: Factory radio/cassette player, optional amplifiers, and speaker systems. Driver Assistance Cruise Control: Standard on most models. Instrumentation: Porsche 'flat' instrument panel with comprehensive gauges including oil pressure, oil temperature, voltmeter, and fuel level. 🔧 Maintenance Service Intervals Oil Change Interval:...