Vehicle Segment:
Luxury Grand Tourer (GT)
Target Audience:
Owners and independent repair shops specializing in classic and modern Jaguars.
Comparison To Jtis:
Explicitly stated as 'Not a JTIS', indicating it is likely a more direct factory manual rather than the later Jaguar Technical Information System, potentially offering more granular detail or a different structure.
Comprehensive Coverage:
Covers a wide range of mechanical and electrical systems, from basic maintenance to complete overhauls, making it a definitive resource.
Diagnostic Emphasis:
Strong focus on troubleshooting and diagnostics, including specific DTCs, which is crucial for complex vehicles like the XJS.
Detail Level:
Provides detailed technical specifications, torque settings, and procedures essential for accurate repairs.
Systems Covered Summary:
Engine, transmission, electrical, brakes, suspension, steering, body, cooling, fuel, exhaust, diagnostics, maintenance, alignment, instrument panel.
Estimated Page Count:
Extensive (typical factory service manuals for this era are 1000+ pages, specific count not provided but indicated as comprehensive).
Manual Type:
Factory Service Repair Manual
Format:
Digital Download (PDF)
Engine Service:
Complete overhaul, rebuilding procedures, component diagnostics, torque specifications, firing order, belt routing.
Transmission Service:
Removal, installation, overhaul, rebuilding procedures, fluid specifications.
Electrical Systems:
Comprehensive wiring diagrams, troubleshooting guides, diagnostic trouble codes (DTCs) and resolutions, instrument panel.
Suspension And Steering:
Front end alignment procedures, steering system overhaul, suspension component service and replacement.
Braking System:
Brake servicing procedures, component replacement, hydraulic system diagnostics.
Cooling System:
Radiator, fan, thermostat, water pump service and diagnostics.
Fuel System:
Fuel pump, injectors, lines, and tank service and diagnostics.
Exhaust System:
Exhaust servicing, component replacement, catalytic converter information.
Bodywork:
Body panel repair, trim removal and installation, structural information.
Maintenance Procedures:
Factory maintenance schedules, fluid changes, filter replacements, lubrication points.
Troubleshooting And Diagnostics:
Systematic troubleshooting flows, diagnostic trouble code interpretation and resolution strategies.
Repair Procedures:
Step-by-step instructions for component removal, disassembly, repair, reassembly, and installation.
Overhaul And Rebuilding:
Detailed instructions for engine and transmission overhauls, including component specifications and clearances.
Alignment Procedures:
Front end alignment specifications and adjustment procedures.
Diagnostic Capabilities:
Advanced diagnostics covering electrical faults, engine performance issues, and system malfunctions, including DTCs.
Repair Complexity:
Covers basic to advanced repair procedures, including complete engine and transmission rebuilds, suitable for professional mechanics and experienced enthusiasts.
Documentation Type:
Factory original service information, providing authoritative and accurate repair data.
Engine Type 1:
5.3L (5343cc) V12 (pre-HE and HE variants)
Engine Code 1:
Various codes depending on specific market and emissions standards (e.g., V12-HE).
Bore Stroke 1:
83.25 mm x 82.55 mm (typical for V12)
Compression Ratio 1:
Approximately 9.5:1 to 10.0:1 (depending on HE variant and market)
Horsepower 1:
263 bhp to 287 bhp (approximate, depending on market and emissions)
Torque 1:
300 lb-ft to 330 lb-ft (approximate, depending on market and emissions)
Fuel System 1:
Bosch L-Jetronic fuel injection (earlier models), later models with Lucas/GEMS or Marelli electronic fuel injection (EFI).
Engine Firing Order 1:
1-12-5-10-3-8-7-2-11-6-9-4 (for V12)
Engine Type 2:
4.0L (3980cc) AJ6 Inline-6 (introduced in 1992/1993 model years)
Engine Code 2:
AJ6 (later AJ16 in some later models covered)
Bore Stroke 2:
83 mm x 78 mm
Compression Ratio 2:
9.0:1 to 10.0:1 (depending on variant)
Horsepower 2:
221 bhp to 245 bhp (approximate)
Torque 2:
250 lb-ft to 275 lb-ft (approximate)
Fuel System 2:
Lucas/GEMS or Marelli electronic fuel injection (EFI).
Transmission Type Standard:
3-speed automatic (GM TH400) - early models
Transmission Type Standard Later:
4-speed automatic (GM 4L80-E) - later V12 models (introduced around 1993/1994)
Transmission Type Optional:
5-speed manual (Getrag G5SP) - available on some 6-cylinder models and early V12 models.
Transmission Fluid Spec Auto:
Dexron III (or equivalent)
Transmission Fluid Spec Manual:
GL-4 or GL-5 gear oil (specific viscosity may vary, check manual)
Crash Test Data Availability:
Limited official crash test data from major organizations for this era of Jaguar, often tested against European standards.
ABS:
Standard on most models from 1988 onwards.
Airbags:
Driver's side airbag introduced in later years of this range (often starting around 1991-1992).
Seatbelts:
3-point seatbelts front and rear.
Oil Change Interval:
Typically every 5,000 - 7,500 miles (8,000 - 12,000 km) or annually, depending on usage. Consult manual for specific intervals based on driving conditions.
Transmission Fluid Interval:
Check every 10,000 miles (16,000 km), replace typically every 30,000 - 60,000 miles (48,000 - 96,000 km) or as per manual recommendations.
Spark Plug Replacement:
Varies by engine and plug type; can range from 30,000 to 100,000 miles for certain modern ignition systems. The V12's twin spark plugs require specific attention.
Engine Oil Type:
API SG or SH rated synthetic or semi-synthetic oil, typically SAE 10W-40 or 20W-50, depending on climate. The V12 engine is known to be oil-hungry and can benefit from high-quality oil.
Coolant Type:
Ethylene glycol-based antifreeze/coolant, typically a 50/50 mix with distilled water. Check manual for specific Jaguar recommended coolant.
Brake Fluid Type:
DOT 3 or DOT 4 brake fluid.
Cooling System Reliability:
Early XJS models, particularly V12s, could experience overheating issues if cooling system maintenance was neglected due to the complexity of the V12 cooling system.
Electrical Gremlins:
As with many Jaguars of this era, electrical gremlins can occur, especially with aged wiring harnesses, connectors, and switches. The manual's extensive wiring diagrams are invaluable.
Rust And Corrosion:
Common to vehicles of this age, particularly in areas exposed to road salt. Bodywork sections in the manual are essential for addressing this.
Suspension Bushings:
Wear in suspension bushings can lead to vague handling and clunking noises. The manual covers replacement procedures.
Brand Focus:
Jaguar Cars is renowned for producing luxury sports cars and grand tourers, emphasizing performance, comfort, and elegant styling.
Design Origin:
The XJS was designed to succeed the iconic E-Type, with a focus on a more refined and luxurious grand touring experience.
Key Updates 1988-1996:
Introduction of the 4.0L AJ6 engine and updated transmission options, significant interior and exterior styling revisions, improved aerodynamics, and enhanced electronic systems. The convertible (XJ-SC) was also re-engineered into a full convertible.
Production Period:
1975–1996 (This manual covers the latter half of this long production run).
Manufacturing Location:
Coventry, England
