🏷️ Basic Information Identification Make: Porsche Model: 944 S Model Years Covered: 1987, 1988, 1989 Chassis Code: 944 Codes Engine Code Range: M44.01, M44.02 (for 944 S) 👋 Introduction Market Position Positioning: The Porsche 944 S represented a significant evolution of the 944 line, offering enhanced performance through a more powerful engine, positioning it as a more sporting and track-capable variant of the popular transaxle coupe. Competitive Analysis Competitors: Competed with other performance-oriented coupes and sedans of the era, such as BMW 3 Series (E30), Audi Quattro models, and some Japanese performance cars, offering a distinct blend of Porsche handling and a front-engine, rear-drive layout. Key Features Engine Variant: Distinguished by its 2.5-liter 16-valve engine, providing a notable increase in horsepower and a more refined power delivery compared to the standard 944. Chassis Design: Utilized Porsche's transaxle design, placing the transmission at the rear axle for optimal weight distribution and handling balance. Manual Value Value Proposition: Empowers owners and technicians with the precise knowledge required to maintain and repair the Porsche 944 S to factory standards, enabling cost savings and ensuring longevity. 📋 Manual Details Coverage Areas Primary Coverage: Mechanical and Electrical Systems, Bodywork, Maintenance, Diagnostics, Repair Specific Sections: Engine, Transmission, Fuel System, Ignition System, Lubrication System, Exhaust System, Electrical System, Body and Frame Page Count Estimated Page Count: Extensive (typical for comprehensive workshop manuals, exact number not specified but implied to be comprehensive) Manual Type Type: Workshop Service Repair Manual Language Language: English Format Format: PDF 📖 Manual Coverage Systems Covered Engine: Detailed overhaul, repair, and diagnosis of the 2.5L 16-valve inline-4 engine, including timing belt, valve train, cooling system, lubrication, and emissions control. Transmission: Service and repair procedures for the manual transmission, including clutch, gearbox overhaul, and drivetrain components. Fuel System: Comprehensive coverage of fuel injection system (Bosch L-Jetronic or Motronic variations), fuel pump, injectors, fuel lines, and pressure regulation. Ignition System: Detailed information on ignition timing, spark plugs, distributor, ignition coils, and electronic control unit (ECU) diagnostics. Electrical System: Wiring diagrams, component testing, charging system (alternator, battery), starting system, lighting, gauges, and comfort electronics. Braking System: Service and repair for disc brakes (front and rear), including ABS system troubleshooting and hydraulic components. Suspension And Steering: Front and rear suspension components, alignment specifications, power steering system service. Body And Frame: Body panel removal and installation, glass, seals, interior trim, and structural component repair. Procedures Included Maintenance: Routine servicing such as oil changes, filter replacements, spark plug service, brake fluid flush, coolant replacement, and belt inspections. Diagnostics: Troubleshooting guides, symptom-based diagnostics, fault code interpretation (if applicable to the era/system), and electrical testing procedures. Repair: Step-by-step instructions for component removal, disassembly, repair, reassembly, and installation for all major vehicle systems. Overhaul: Detailed procedures for complete engine and transmission rebuilds, including specifications and tolerances. Tune Ups: Procedures for optimizing engine performance, including ignition timing, idle speed, and fuel mixture adjustments. Technical Depth Depth: Comprehensive, suitable for professional technicians and advanced DIY enthusiasts. Covers everything from basic maintenance to full engine and transmission rebuilds. 📊 Manual Specifications File Format Format: PDF Delivery: Fast and Free Electronic Delivery via Email Print Quality Printable: Yes Binding Type Binding: N/A (Digital PDF) Paper Type Paper Type: N/A (Digital PDF) Usability Emphasis Symbols: WARNING, CAUTION, NOTE Special Tools: Refers to and illustrates Porsche specific tool numbers where applicable. ⚙️ Engine Specifications Primary Engine Type: Naturally Aspirated Inline 4-Cylinder Displacement: 2.5 Liters (2479 cc) Valvetrain: 16 Valves (Double Overhead Camshafts - DOHC), 4 valves per cylinder Performance Horsepower: Approximately 187-190 hp (depending on market and specific year calibration) Torque: Approximately 170-175 lb-ft (depending on market and specific year calibration) Fuel System Injection System: Bosch L-Jetronic or Motronic electronic fuel injection Fuel Type: Unleaded gasoline (premium octane recommended) Lubrication Oil Capacity: Approximately 5.5 - 6.0 liters (with filter change) Cooling System Coolant Capacity: Approximately 9.5 - 10.5 liters 🔧 Transmission Standard Type: 5-speed Manual Transaxle Optional Type: Optional automatic transmission (Tiptronic/Tiptronic S was not available in this era for the 944 S, but a standard automatic was an option on some 944 models, though less common for the 'S' variant). Features Transaxle Design: Rear-mounted transaxle for optimal weight distribution Fluid Type Manual Transmission Fluid: API GL-4 or GL-5 gear oil (specific viscosity like 75W-90 recommended, refer to manual for exact Porsche spec) Fluid Capacity Manual Transmission Capacity: Approximately 2.5 - 3.0 liters 📐 Dimensions Exterior Wheelbase: Approx. 94.5 inches (2400 mm) Overall Length: Approx. 168.0 inches (4267 mm) Overall Width: Approx. 66.5 inches (1689 mm) Overall Height: Approx. 50.0 inches (1270 mm) Weights Curb Weight: Approx. 2850 - 3000 lbs (1293 - 1361 kg) Gross Vehicle Weight Rating: Approx. 3800 - 3950 lbs (1724 - 1792 kg) Wheels And Tires Front Wheel Size: 16 x 7 inches Rear Wheel Size: 16 x 8 inches Front Tire Size: 205/55R16...