🏷️ Basic Information Identification Make: Porsche Model: 911 Model Generation: 996 Model Year: 1998 Codes Chassis Code: 996 Engine Code: M96.01 👋 Introduction Market Position Vehicle Class: Sports Car / Grand Tourer Predecessor: Porsche 993 (911 Air-Cooled Generation) Key Competitors: Ferrari 355, Chevrolet Corvette C5, Aston Martin DB7, Lotus Esprit Competitive Analysis Design Philosophy: Transition from air-cooled to water-cooled engines, modern styling, increased comfort and technology Key Features Engine Layout: Rear-mounted, water-cooled flat-six Drivetrain: Rear-wheel drive (Carrera), All-wheel drive (Carrera 4, optional later models) Aerodynamics: Active rear spoiler 📋 Manual Details Coverage Areas Engine Maintenance: Complete Transmission Repair: Complete Brake System Overhaul: Complete Electrical Diagnostics: Comprehensive Body And Chassis: Complete Suspension And Steering: Complete HVAC System: Complete Interior Trim And Components: Complete Diagnostic Troubleshooting: In-depth Page Count Estimated Pages: 1500+ Manual Type Type: Official Factory Service Manual Software Language Primary Language: English Format Software Format: Proprietary Software (likely CD-ROM or downloadable application) Searchability: High (keyword search functionality) Printability: Likely available (depending on software features) 📖 Manual Coverage Systems Covered Engine: 3.4L Flat-6 (M96.01), including DOHC, VarioCam, lubrication, cooling, fuel injection, ignition, emissions control Transmission: G96.00 (5-speed manual), G96.50 (Tiptronic automatic), including clutch, driveshafts, differentials Brakes: Front and rear disc brakes, ABS, brake fluid specifications, service procedures Electrical: Wiring diagrams, fuse/relay locations, starter, alternator, battery, lighting, comfort systems, diagnostic codes Suspension: Front McPherson strut, rear multi-link, springs, shock absorbers, control arms, wheel alignment specifications Steering: Hydraulic power steering system, steering rack, column, wheel alignment Body: Body panel removal/installation, door mechanisms, glass, seals, corrosion protection Climate Control: HVAC system operation, refrigerant, components, diagnosis Safety Systems: Airbags, seat belts, ABS operation Procedures Included Maintenance: Oil changes, filter replacements, spark plugs, fluid checks, belt inspection/replacement Repair: Engine rebuild, transmission overhaul, brake caliper replacement, component diagnostics and repair Troubleshooting: System-specific diagnostic flowcharts and symptom-based troubleshooting guides Diagnostics: OBD-II fault code interpretation, sensor testing, actuator testing Component Replacement: Detailed step-by-step instructions for virtually all components Technical Depth Depth: Factory-level diagnostic and repair procedures, including torque specifications, special tool requirements, and assembly sequences 📊 Manual Specifications File Format Software Type: Electronic Service Manual (ESM) Print Quality Image Resolution: High (for clear diagrams and illustrations) Binding Type Binding: N/A (Software-based) Paper Type Paper Quality: N/A (Software-based) ⚙️ Engine Specifications Primary Engine Engine Type: Naturally Aspirated Flat-6 Displacement: 3.4 Liters (3387 cc) Bore X Stroke: 93.0 mm x 82.7 mm Compression Ratio: 11.3:1 Valve Train: DOHC, 4 valves per cylinder, hydraulic valve lifters, VarioCam camshaft timing Performance Horsepower: 298 hp @ 6800 rpm Torque: 339 Nm (250 lb-ft) @ 4600 rpm Fuel System Fuel Type: Unleaded Gasoline (91+ Octane Recommended) Injection System: Bosch Motronic ME 7.8 (ECU Controlled Sequential Fuel Injection) Fuel Pressure: Approx. 3.5 - 4.0 bar (50-58 psi) Lubrication Oil Capacity: Approx. 8.5 Liters (with filter) Oil Type Specification: Porsche A40 (e.g., Mobil 1 0W-40 or similar) Cooling Cooling System Type: Water-cooled with front-mounted radiators Coolant Capacity: Approx. 12.5 Liters Coolant Type Specification: Glysantin G48 or equivalent (Blue/Green) 🔧 Transmission Standard Transmission Type: G96.00 5-Speed Manual Transaxle Optional Transmission Type: G96.50 Tiptronic 5-Speed Automatic Transaxle Features Gear Ratios Manual: 1st: 3.82, 2nd: 2.15, 3rd: 1.50, 4th: 1.17, 5th: 0.92, Reverse: 3.27 Final Drive Ratio Manual: 3.44:1 Clutch Type: Hydraulically operated single-plate dry clutch Transmission Fluid Capacity Manual: Approx. 3.0 Liters Transmission Fluid Type Manual: Porsche Specification 000 043 204 45 (e.g., Mobilube PTX 75W-90 or equivalent GL-5 gear oil) Transmission Fluid Capacity Tiptronic: Approx. 9.0 Liters (system capacity) Transmission Fluid Type Tiptronic: Porsche ATF Specification 000 043 205 28 (e.g., ATF LT71141 or equivalent) 📐 Dimensions Exterior Length: 4435 mm (174.6 in) Width: 1735 mm (68.3 in) (excluding mirrors) Height: 1295 mm (51.0 in) Wheelbase: 2350 mm (92.5 in) Front Track: 1470 mm (57.9 in) Rear Track: 1520 mm (59.8 in) Weights Curb Weight Manual: Approx. 1320 kg (2910 lbs) Curb Weight Tiptronic: Approx. 1370 kg (3020 lbs) Gross Vehicle Weight Rating Gvwr: Approx. 1750 kg (3858 lbs) Towing Capacity: Not Recommended Cargo Trunk Volume Front: Approx. 130 Liters (5.0 cu ft) Rear Storage Compartment: Small compartment behind engine, variable depending on options 🛡️ Safety Features Ratings NHTSA Front Crash Rating: Not Explicitly Tested by NHTSA in 1998 IIHS Front Crash Rating: Not Explicitly Tested by IIHS in 1998 Active Features ABS: Standard (Bosch 5.3 ABS System) Traction Control: Optional (PSM - Porsche Stability Management, introduced later in the generation, check specific VIN) Passive Features Airbags: Driver and Passenger Frontal Airbags Seat Belts: Three-point Inertia Reel Seatbelts with Pretensioners Rollover Protection: Integral roll-over structure behind seats 💡 Technology Features Infotainment Audio System: Standard Porsche CR-220 CDR-220 AM/FM Radio with CD Player, optional Bose High-End Sound System Navigation: Optional Porsche Communication Management (PCM) navigation system available on later models, not standard for 1998 Driver Assistance Parking Assistance: Optional rear parking sensors Cruise Control: Standard Connectivity Phone Integration: Optional...