🏷️ Basic Information Identification Make: Jaguar Model: XJS Year: 1991 Codes Chassis Code: XJ-S 👋 Introduction Market Position Positioning: Luxury grand tourer, high-performance vehicle Competitive Analysis Competitors 1991: BMW 8 Series, Mercedes-Benz SL-Class, Porsche 928 Key Features Design Philosophy: Long bonnet, elegant styling, powerful V12 engine option Target Audience: Discerning drivers seeking comfort, performance, and style Manual Value Proposition Value: Inexpensive way to maintain and repair the vehicle, save on shop costs Accessibility: Instant download, no waiting for shipping 📋 Manual Details Coverage Areas All Models Engines: True All Trim Levels: True All Transmission Types: True Page Count Estimated Page Count: High (Typical for factory service manuals) Manual Type Type: Factory Service Repair Manual / Workshop Manual Language Language: English Format Format: PDF 📖 Manual Coverage Systems Covered Engine: Comprehensive (Diagnosis, repair, overhaul) Fuel System: Injection system (EFI), fuel pumps, injectors, lines Ignition System: Distributor, coils, spark plugs, timing Cooling System: Radiator, thermostat, water pump, hoses, fan Exhaust System: Manifolds, catalytic converters, mufflers Transmission: Automatic transmission (e.g., ZF 4HP22), diagnosis, repair, fluid Drivetrain: Driveshaft, differential, rear axle Suspension: Front and rear suspension components, alignment, springs, dampers Steering: Power steering system, steering rack, linkages Brakes: Hydraulic system, ABS (if equipped), discs, pads, calipers, lines Electrical System: Wiring diagrams, battery, alternator, starter, lighting, fuses, relays Climate Control: HVAC system, A/C, heater core, controls Body And Chassis: Body panels, structural components, doors, windows, locks Interior: Trim, seats, dashboard, instrumentation Procedures Included Maintenance: Routine service, oil changes, filter replacements, tune-ups Troubleshooting: Diagnostic procedures, fault finding, common problems Repair: Detailed step-by-step repair instructions for all major systems Disassembly Reassembly: Complete disassembly and reassembly of major components Diagnostics: Engine, transmission, electrical system diagnostics Adjustment: Suspension alignment, brake adjustments, throttle linkage Component Replacement: Engine, transmission, suspension, brake, electrical component replacement Technical Depth Depth: Factory-level technical detail for DIY and professional mechanics Diagrams: High-quality exploded views and circuit diagrams Specifications: Torque specifications, clearances, tolerances Troubleshooting Charts: Diagnostic flowcharts and symptom-based troubleshooting 📊 Manual Specifications File Format Format: PDF Compatibility: Adobe PDF Reader recommended for optimal display Print Quality Printability: Printable without restriction Image Quality: Top quality images/graphics Binding Type Binding: N/A (Digital Download) Paper Type Paper Type: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Engine Options: 5.3L (5343cc) V12; 4.0L (3980cc) AJ6 Inline-6 (Note: 1991 models primarily featured the V12, though some markets/later production may have had the 4.0L AJ6) Performance V12 Horsepower: Approx. 263-318 hp (depending on configuration/market) V12 Torque: Approx. 318-333 lb-ft Aj6 Horsepower: Approx. 221-231 hp Aj6 Torque: Approx. 277 lb-ft Fuel System Fuel Injection: Electronic Fuel Injection (EFI) - Bosch/Lucas systems common Fuel Type: Unleaded Gasoline Engine Code Examples V12 Codes: e.g., '5.3 V12' Aj6 Codes: e.g., '4.0 AJ6' 🔧 Transmission Standard Automatic Transmission: ZF 4HP22 4-speed automatic Optional Manual Transmission: Rare/not standard on 1991 models, but may have been a limited option or aftermarket conversion. Manuals typically focus on the automatic. Features Automatic Features: Electronic control, shift logic tuned for performance and comfort Fluid Type Atf Specification: Refer to manual for specific ATF type (typically Dexron II or equivalent) 📐 Dimensions Exterior Body Styles: 2+2 Coupe, Convertible Wheelbase: Approx. 102.4 inches (2601 mm) Length: Approx. 195.7 inches (4970 mm) Width: Approx. 70.3 inches (1786 mm) Height: Approx. 50.5 inches (1283 mm) Weights Curb Weight: Approx. 4,000-4,500 lbs (1814-2041 kg) depending on configuration 🛡️ Safety Features Ratings Federal Safety Standards: Compliant with US Federal Motor Vehicle Safety Standards for 1991 Active Features ABS: Anti-lock Braking System (ABS) available/standard on certain models Passive Features Seatbelts: Three-point seatbelts (front), lap belts (rear) Airbags: Driver's airbag was becoming standard or optional in this era, but not universally guaranteed on all 1991 XJS models. Manual will detail specific fitment. Crumple Zones: Designed with frontal and rear crumple zones 💡 Technology Features Infotainment Audio System: Factory fitted radio/cassette player, often with premium speaker system Climate Control Tech: Automatic climate control system (optional or standard depending on trim) Driver Assistance Cruise Control: Standard feature on most models Connectivity Connectivity Era: Limited by 1991 standards; focus on analog systems. 🔧 Maintenance Service Intervals Oil Change Interval: Typically 3,000-6,000 miles or 6-12 months, refer to manual for exact schedule based on usage Transmission Service: Fluid and filter change recommended every 30,000-50,000 miles or as per manual Coolant Change: Every 2 years or 30,000 miles Fluid Specifications Engine Oil: e.g., 10W-40 or 20W-50 (Refer to manual for exact viscosity and API rating) Coolant: Ethylene glycol-based antifreeze (typically a 50/50 mix with distilled water) Brake Fluid: DOT 3 or DOT 4 (Refer to manual for specific requirement) Known Issues Cooling System: Potential for radiator leaks, hose degradation, especially if original components are retained. Electrical System: Lucas electrical components reputation for occasional unreliability; wiring loom degradation over time. Fuel Injection: Injector seals, fuel pressure regulator issues, sensor failures. V12 Engine: While robust, requires meticulous...