🏷️ Basic Information Identification Make: Jaguar Model: XJS Year: 1991 Market Segment: Luxury Grand Tourer 👋 Introduction Market Position Vehicle Class: Luxury Grand Tourer, positioned as a high-performance, comfortable long-distance cruiser. Competitive Analysis Competitors 1991: BMW 8 Series (E31), Mercedes-Benz SL (R129), Porsche 928. Key Features Vehicle Design Philosophy: Elegant styling, powerful V12 engine (primarily), comfortable and luxurious interior, capable grand touring performance. Key Features Manual Manual Value Proposition: Provides professional-level repair and maintenance guidance, enabling owners and independent mechanics to service the vehicle comprehensively. 📋 Manual Details Coverage Areas Overall Coverage: Comprehensive service, repair, and troubleshooting for the 1991 Jaguar XJS. Specific Systems Covered: Engine, Transmission, Fuel System, Ignition System, Cooling System, Exhaust System, Steering, Suspension, Brakes, Electrical System, Climate Control, Bodywork, Interior Trim, Diagnostic Procedures. Page Count Estimated Pages: Hundreds (as described in product information) Manual Type Type: Factory Service Repair Workshop Manual Language Language: English Format Format: Downloadable PDF 📖 Manual Coverage Systems Covered Engine Mechanical: Engine overhaul, internal components, timing, lubrication, cooling, and ancillary systems. Engine Performance: Fuel injection, ignition timing, emissions control, diagnostics. Transmission Automatic: Servicing, repair, overhaul, and troubleshooting of the automatic transmission (likely the GM 4L80-E or ZF 4HP24 depending on exact specification). Brakes: Hydraulic system, ABS (Anti-lock Braking System) components, brake disc and pad replacement, bleeding procedures. Suspension Steering: Front and rear suspension component inspection and replacement, steering rack and pump servicing, alignment specifications. Electrical System: Wiring diagrams, component testing, lighting, starter, alternator, battery, fuse and relay identification, power windows, central locking, and auxiliary systems. Climate Control: Air conditioning system servicing, heater matrix, fan controls, and diagnostic procedures. Body Chassis: Body panel alignment, door and window mechanisms, interior trim removal and installation, corrosion prevention. Procedures Included Maintenance: Scheduled maintenance tasks, oil changes, filter replacements, lubrication points, fluid checks and top-ups. Troubleshooting: Diagnostic flowcharts, common fault identification, symptom-based troubleshooting for all major systems. Repair: Step-by-step instructions for component removal, installation, and overhaul, including detailed diagrams and torque specifications. Diagnostics: Detailed procedures for diagnosing electrical and mechanical faults, including wiring harness checks and component testing. Technical Depth Depth: Professional-level, covering everything from basic maintenance to complete engine and transmission rebuilds. 📊 Manual Specifications File Format File Type: PDF Searchability: Likely text-searchable PDF, enabling quick information retrieval. Print Quality Printable: Yes, single pages or entire manual. Binding Type Binding: N/A (Digital Download) Paper Type Paper Quality: N/A (Digital Download) Software Requirements Compatibility: Compatible with Windows and MAC operating systems. Licensing Usage License: Lifetime use, no expiry dates, can be used on multiple devices. ⚙️ Engine Specifications Primary Engine 1991 Engine Code: Likely AJ16 SC (Supercharged Straight-6) or V12 (Jaguar HE). Engine Type: Inline 6-Cylinder or V12 Displacement V12: 5.3 Liters (5343 cc) Displacement I6: 4.0 Liters (3980 cc) - often supercharged in later models. Performance V12 Horsepower V12: Approx. 263 hp @ 5000 rpm (for HE version) Torque V12: Approx. 315 lb-ft @ 3000 rpm (for HE version) Performance I6 Horsepower I6 Supercharged: Approx. 310 hp (for supercharged versions) Torque I6 Supercharged: Approx. 300 lb-ft (for supercharged versions) Fuel System Fuel Delivery: Bosch L-Jetronic fuel injection (for V12), Lucas fuel injection (for I6). Fuel Type Recommended Fuel: Premium Unleaded Gasoline (91 octane or higher recommended). Cooling System Coolant Type: Ethylene glycol-based antifreeze/coolant, typically a 50/50 mix with distilled water. Specific Jaguar coolant may be recommended. 🔧 Transmission Standard Transmission Type V12: GM 4L80-E 4-speed automatic (common for V12 models) Type I6: ZF 4HP24 4-speed automatic (common for I6 models) Optional Transmission Manual Availability: Manual transmission options were extremely rare or non-existent for the 1991 XJS in most markets. Fluid Specifications Automatic Transmission Fluid: Dexron III or equivalent for GM 4L80-E; ZF Lifeguardfluid 5 or equivalent for ZF 4HP24. Consult manual for exact specifications and capacities. 📐 Dimensions Exterior Length: Approx. 196.9 inches (4998 mm) Width: Approx. 70.5 inches (1791 mm) Height: Approx. 49.7 inches (1262 mm) Weights Curb Weight: Approx. 3700-4000 lbs (1678-1814 kg), varies by engine and equipment. Wheelbase Wheelbase: Approx. 102.4 inches (2600 mm) 🛡️ Safety Features Ratings Crash Test Data: Limited comprehensive crash test data readily available for this specific model year from modern standards bodies. Vehicles of this era were subject to less stringent testing. Active Features ABS: Standard Anti-lock Braking System (ABS). Passive Features Airbags: Driver-side airbag (standard for 1991 model year). Seatbelts: Three-point seatbelts in front and rear. 💡 Technology Features Infotainment Audio System: Factory fitted AM/FM stereo with cassette player, often with amplifier. Upgrade options common. Climate Control HVAC Features: Automatic climate control with air conditioning and heating. Driver Assistance Cruise Control: Standard cruise control system. Connectivity Early Tech: Limited by modern standards; focused on comfort and driving experience rather than digital integration. 🔧 Maintenance Service Intervals Oil Change Interval: Typically every 3,000-6,000 miles or annually, whichever comes first. Consult manual for precise interval based on driving conditions....