🏷️ Basic Information Identification Make: Porsche Model: 964 (911 Carrera 4) Year: 1989-1994 Codes Internal Chassis Code: 964 👋 Introduction Market Position Era: Represents a significant evolution from the previous 911 G-Series, introducing modern technology and comfort. Competitive Analysis Competitors: Competed with high-performance sports cars of its era such as the Ferrari 348, Lotus Esprit, and Chevrolet Corvette ZR-1. Key Features All Wheel Drive: The 'Carrera 4' designation highlights the standard all-wheel-drive system, a first for a naturally aspirated 911. Aerodynamics: Features a new aerodynamic package including integrated bumpers and a retractable rear spoiler. Interior Comfort: Offers a more modern and ergonomic interior compared to its predecessors. Target Audience Audience: DIY enthusiasts and professional mechanics seeking detailed factory repair information. 📋 Manual Details Coverage Areas Coverage Scope: Full workshop service and repair Page Count Estimated Page Count: Extensive (exact number not provided, but described as 'highly detailed' and '100% complete') Manual Type Type: Factory Service Repair Manual Language Language: English (implied by product description) Format Format: PDF 📖 Manual Coverage Systems Covered Engine Mechanical: Complete engine overhaul, including disassembly, inspection, assembly of the flat-six engine. Engine Management: Bosch Motronic fuel injection and ignition system diagnostics, adjustments, and repair. Transmission: Manual and Tiptronic transmission servicing, clutch replacement, gearbox overhaul. Drivetrain: All-wheel-drive system (Carrera 4) maintenance, repair, and differential servicing. Suspension: Front and rear suspension, shock absorbers, springs, bushings, alignment procedures. Brakes: Brake system diagnostics, fluid replacement, caliper and rotor servicing, ABS system. Electrical System: Wiring diagrams, starter, alternator, battery, lighting, instrumentation, power windows, and more. Body And Chassis: Body panel repair, door mechanisms, convertible top (if applicable), chassis components. Heating And Air Conditioning: HVAC system components, refrigerant servicing, diagnostics. Fuel System: Fuel pump, injectors, fuel lines, and tank maintenance. Cooling System: Radiator, fan, coolant circulation, and hose replacement. Procedures Included Routine Maintenance: Oil changes, filter replacements, fluid checks and top-offs, spark plug replacement. Troubleshooting: Diagnostic procedures for common and uncommon issues, fault code interpretation. Repair And Rebuild: Step-by-step instructions for component repair and full system rebuilds. Component Replacement: Detailed guidance on replacing major and minor components. Tune Up: Ignition timing, fuel mixture adjustments, idle speed control. Special Tools: Identification and usage of specialized tools required for Porsche 964 repairs. Technical Depth Depth: Comprehensive, covering basic maintenance to complete engine and transmission rebuilds. Detail Level: Factory-level detail with hundreds of photos and illustrations. 📊 Manual Specifications File Format File Type: PDF Searchability: Searchable text (implied by digital format) Print Quality Printability: All pages are printable. Binding Type Binding: N/A (Digital PDF) Paper Type Paper: N/A (Digital PDF) Compatibility Operating Systems: Works under all PC based Windows operating systems and Mac. ⚙️ Engine Specifications Primary Engine Engine Code: M64/01 (early), M64/02 (later Carrera 4) Configuration: 3.6-liter (3600 cc) Naturally Aspirated, Air-Cooled Flat-Six Performance Horsepower Early: 250 PS (247 hp; 184 kW) at 6100 rpm (M64/01) Horsepower Late: 250 PS (247 hp; 184 kW) at 6100 rpm (M64/02) Torque Early: 312 Nm (230 lb-ft) at 4800 rpm (M64/01) Torque Late: 312 Nm (230 lb-ft) at 4800 rpm (M64/02) Fuel System Injection System: Bosch Motronic 2.7 (early), Bosch Motronic 2.10 (late) Fuel Type: Unleaded Gasoline Cooling System Cooling Method: Air-cooled with thermostatically controlled oil cooling system. 🔧 Transmission Standard Type: 5-speed Manual (G50/10 for Carrera 4) Optional Type: Tiptronic (automatic with manual override) - introduced later in the 964 generation. Features All Wheel Drive Coupling: Viscous coupling for the AWD system. 📐 Dimensions Exterior Length: Approx. 4250 mm (167.3 in) Width: Approx. 1735 mm (68.3 in) Height: Approx. 1310 mm (51.6 in) Wheelbase: Approx. 2272 mm (89.4 in) Weights Curb Weight: Approx. 1470 kg (3241 lbs) for Carrera 4 🛡️ Safety Features Ratings Crash Testing: While official Euro NCAP or NHTSA ratings for this era are scarce, Porsche's reputation for robust construction is a key factor. Active Features ABS: Standard Anti-lock Braking System (ABS) on Carrera 4 models. Passive Features Airbags: Driver airbag became standard during the 964 production run. Rollover Protection: Integrated roll-over protection structure, particularly evident in Targa and Cabriolet versions. 💡 Technology Features Infotainment Audio System: Factory premium audio systems were available, often from brands like Blaupunkt or Becker. Driver Assistance ABS: Standard Anti-lock Braking System. All Wheel Drive: The Carrera 4 features a viscous-coupling all-wheel-drive system for enhanced traction. Connectivity Early Electronics: Features include power windows, central locking, and optional cruise control, representing the era's automotive technology. 🔧 Maintenance Service Intervals Oil Change Interval: Typically every 10,000 km or 1 year, whichever comes first, using the correct oil specification. Major Service: Includes spark plug replacement, air filter, fuel filter, and inspection of various components (often around 40,000 km). Fluid Specifications Engine Oil: Refer to manual for specific viscosity (e.g., 0W-40, 5W-40, 10W-40 depending on climate and brand recommendations). Always use a high-quality synthetic oil suitable for air-cooled engines. Brake Fluid: DOT...