Positioning:
Grand Tourer, high-performance luxury coupe, flagship model for Porsche
Competitors:
Ferrari 400i, Aston Martin V8 Vantage, Jaguar XJS, BMW 8 Series (later models)
Design Philosophy:
Transaxle layout for weight distribution, front-engine V8, rear-wheel drive, advanced engineering for its era
Target Audience:
Affluent individuals seeking a blend of performance, luxury, and long-distance comfort
Covered Variants:
Porsche 928 S, S4, GT, GTS models
Estimated Page Count:
Detailed analysis indicates a comprehensive manual, typically exceeding 1500 pages for this model range.
Type:
Factory Service Repair Workshop Manual
Delivery Method:
Instant PDF download after payment.
Software Required:
Adobe PDF Reader or compatible PDF viewer.
Powertrain:
Engine, fuel system, cooling system, exhaust system, transmission, drivetrain
Chassis:
Suspension (front/rear), steering, brakes, wheels, tires
Electrical:
Ignition system, lighting, instrumentation, charging system, starting system, body electricals, wiring diagrams
Body:
Body panels, interior trim, windows, doors, locks, bumpers, frame
Maintenance:
Scheduled maintenance, fluid changes, filter replacements, lubrication
Repair:
Engine rebuild, transmission overhaul, suspension component replacement, brake caliper repair, electrical component troubleshooting and replacement
Diagnostics:
Troubleshooting guides, fault code interpretation, symptom-based diagnostics
Specifications:
Torque specifications, clearances, tolerances, fluid capacities, electrical specifications
Depth:
Complete disassembly and reassembly, advanced diagnostics, factory-level repair procedures
Print Quality:
High resolution, printable without restriction, clear diagrams
Searchable Text:
Yes, as a PDF, the text is generally searchable, aiding in quick information retrieval.
Binding:
N/A (Digital PDF Download)
Paper Type:
N/A (Digital PDF Download)
Engine Type:
V8, Naturally Aspirated
Displacement:
4.7L (S), 5.0L (S4, GT, GTS)
Horsepower:
S: ~231-250 hp, S4: ~306 hp, GT: ~326 hp, GTS: ~345 hp (Varies by market and specific year)
Torque:
S: ~360 Nm, S4: ~450 Nm, GT: ~470 Nm, GTS: ~470 Nm (Varies by market and specific year)
Injection Type:
Bosch L-Jetronic (S), Bosch DME with fuel injection (S4, GT, GTS)
Early Codes:
M30.xx (pre-S4)
Later Codes:
M64.xx (S4, GT, GTS)
Type:
Liquid-cooled, pressurized
Configuration:
Single Overhead Camshaft (SOHC) per bank
Type:
5-speed manual transaxle
Type:
3-speed automatic transaxle (e.g., automatic transaxle from ZF)
Layout:
Rear-mounted transaxle (engine in front, gearbox at rear) for optimal weight distribution
Manual Gearbox Oil:
Hypoid gear oil, API GL-4 or GL-5, viscosity typically 75W-90 or 80W-90 (refer to manual for specific Porsche approvals)
Automatic Transmission Fluid:
Dexron III or equivalent, check manual for exact specification and capacity
Length:
Approx. 4,655 mm (183.3 in) (Varies slightly by model year and variant)
Width:
Approx. 1,785 mm (70.3 in)
Height:
Approx. 1,280 mm (50.4 in)
Curb Weight:
Approx. 1,450 - 1,630 kg (3,197 - 3,594 lbs) (Varies by model and equipment)
Gross Vehicle Weight Rating:
Refer to vehicle VIN plate or manual
Crash Test Results:
Not extensively tested by modern standards, but known for robust build quality and safety cage construction.
ABS:
Standard on S4, GT, GTS; optional or unavailable on earlier 'S' models
Airbags:
Driver's airbag standard from S4 onwards; passenger airbag optional or standard on later models
Seatbelts:
3-point inertia-reel seatbelts
Oil Change:
Typically every 7,500 - 10,000 miles (12,000 - 16,000 km) or annually, refer to manual.
Timing Belt:
Non-interference engine, but replacement recommended at 60,000 miles (100,000 km) or 5-7 years for reliability, refer to manual.
Coolant Flush:
Every 2-3 years, refer to manual.
Engine Oil Type:
API SG/SH or higher, viscosity typically 0W-40, 5W-40, or 10W-40 (check manual for exact Porsche A40/C30 approvals and capacity).
Coolant Type:
Porsche specified coolant, typically G12 or equivalent, mixed 50/50 with distilled water.
Brake Fluid Type:
DOT 4 or DOT 5.1, refer to manual for specific Porsche approval.
Fuel Line Leaks:
Degradation of original fuel lines, especially around the fuel distributor and injection points.
Electrical Gremlins:
Aging wiring harnesses, connectors, and relays can cause intermittent electrical issues.
HVAC System:
Climate control system (HVAC) can be complex and prone to issues with vacuum actuators, blower motor, and refrigerant leaks.
Suspension Bushings:
Wear of rubber bushings in suspension and drivetrain mounts, affecting handling and comfort.
Alternator:
Rebuild or replacement of the alternator is a common maintenance item due to age.
