🏷️ Basic Information Identification Make: Porsche Model: 911 Model Generation: 964 Model Years Covered: 1989, 1990, 1991, 1992, 1993, 1994 Codes Chassis Code: 964 👋 Introduction Market Position Era Significance: The 964 generation represented a significant technological leap for the Porsche 911, incorporating ABS, power steering, and significantly updated engine management. Competitive Analysis Contemporary Rivals: Ferrari Testarossa, Lamborghini Countach, Chevrolet Corvette C4 ZR-1, Lotus Esprit Turbo. Key Features Model Distinction: First 911 generation with standard all-wheel drive (Carrera 4) and significant aerodynamic improvements. Manual Value Proposition: Provides professional-level diagnostic and repair information, crucial for maintaining a complex and performance-oriented vehicle like the 964. 📋 Manual Details Coverage Areas Coverage Overview: Comprehensive service, repair, and troubleshooting for all aspects of the Porsche 911 964. Page Count Estimated Page Count: Hundreds of pages (exact count not specified, typical for comprehensive factory manuals). Manual Type Type: Factory Service Repair Workshop Manual Language Language: English (implied by product description language) Format Format: Downloadable PDF 📖 Manual Coverage Systems Covered Engine Mechanical: Complete engine overhaul, disassembly, assembly, lubrication, cooling, fuel, and emissions systems. Engine Electrical: Ignition system, DME (Digital Motor Electronics) control, sensors, actuators, wiring diagrams, troubleshooting. Transmission: Manual gearbox (G50) and Tiptronic (optional) repair, clutch, driveshafts, differential. Brakes: Brake system components (ABS), hydraulic system, brake pads, discs, bleeding procedures. Suspension Steering: Front and rear suspension, shock absorbers, springs, bushings, power steering system, wheel alignment. Electrical Systems: Lighting, power windows, central locking, climate control, instrument cluster, audio system, battery, charging. Body Chassis: Body panels, doors, hood, trunk, bumpers, chassis structure, rust prevention, interior trim. HVAC: Air conditioning system, heating, ventilation, blower motor, refrigerant circuits. Procedures Included Maintenance: Scheduled maintenance, oil changes, filter replacements, fluid checks, brake inspections, tire rotations. Repair: Step-by-step repair instructions for all major mechanical and electrical components. Troubleshooting: Diagnostic procedures for common faults, error codes, and symptom-based troubleshooting guides. Diagnostics: Detailed diagnostic flowcharts and procedures for the DME and other electronic control units. Rebuilds: Complete engine and transmission rebuild procedures with detailed specifications. Technical Depth Depth: Factory-level, highly detailed, suitable for professional mechanics and advanced DIY enthusiasts. Diagrams Illustrations: Hundreds of detailed photos, exploded diagrams, and wiring schematics. 📊 Manual Specifications File Format Format Details: PDF, compatible with Windows and macOS. Print Quality Print Ability: Printable, individual pages or the entire manual. Binding Type Binding: N/A (Digital download) Paper Type Paper Quality: N/A (Digital download) Licensing Usage Rights: Lifetime use on unlimited devices, no expiry, no renewal fees. ⚙️ Engine Specifications Primary Engine Engine Type: Naturally aspirated, air-cooled, flat-six (Boxer) Engine Code Variations: M64/01 (Carrera 2/4), M64/02 (Carrera 4 Lightweight), M64/03 (Carrera RS), M64/04 (Turbo 3.3). Performance Displacement Carrera: 3.6 Liters (3600 cc) Horsepower Carrera: 250 PS (184 kW; 247 hp) for M64/01 Torque Carrera: 310 Nm (229 lb-ft) for M64/01 Fuel System Fuel Delivery: Bosch Motronic M2.7 DME (Digital Motor Electronics) with multi-point fuel injection. Fuel Type: Unleaded gasoline, minimum 98 RON recommended. 🔧 Transmission Standard Standard Transmission: 5-speed manual gearbox (G50/10 and G50/20) Optional Optional Transmission: 4-speed Tiptronic automatic transmission (available from 1990). Features All Wheel Drive: Standard on Carrera 4 models, front bias of approximately 31%. 📐 Dimensions Exterior Length: Approx. 4250 mm (167.3 in) for Carrera models Width: Approx. 1775 mm (69.9 in) for Carrera models Height: Approx. 1310 mm (51.6 in) for Carrera models Weights Curb Weight Carrera 2: Approx. 1450 kg (3197 lbs) Curb Weight Carrera 4: Approx. 1550 kg (3417 lbs) 🛡️ Safety Features Ratings Crash Safety Design: Reinforced chassis, crumple zones, integrated safety cage structure. Active Features ABS: Bosch ABS (Anti-lock Braking System) standard on all models from 1990. Passive Features Airbags: Driver's side airbag standard from 1990, optional passenger airbag. Seatbelts: 3-point inertia reel seatbelts with pretensioners. 💡 Technology Features Infotainment Audio System: Optional premium sound systems, typically cassette-based with AM/FM radio. Many owners upgrade to modern head units. Driver Assistance ABS System: Bosch ABS system, a significant advancement for the 911 at the time. Connectivity Early Electronics: DME engine management, early form of electronic climate control, electric windows, and mirrors. 🔧 Maintenance Service Intervals Oil Change Interval: Typically every 15,000 km (9,300 miles) or 12 months, whichever comes first (refer to manual for precise interval). Major Service Interval: Major services, including valve adjustments and spark plug replacement, often around 30,000-50,000 km (18,000-30,000 miles). Fluid Specifications Engine Oil Type: High-performance synthetic, e.g., Mobil 1 0W-40 or equivalent (verify specific Porsche A40 approval if applicable, but 964 era specs will differ. Consult manual for exact OEM spec or recommended alternatives). Engine Oil Capacity: Approx. 8.5 - 10.5 Liters (9.0 - 11.1 US Quarts) depending on oil cooler configuration. Brake Fluid: DOT 4 or DOT 5.1 (low viscosity) high-performance brake fluid. Transmission Fluid G50: GL-5 SAE 75W-90 or 75W-140 synthetic gear oil (consult manual for precise specification). Known Issues Crankshaft Bearing: Potential for intermediate shaft...