Mercedes-Benz W124 E-Class, BMW 7 Series (E32), Audi V8 Quattro, Lexus LS 400 (from 1989).
Key Features
Vehicle Positioning:
The Jaguar XJ6 (XJ40) represented Jaguar's foray into modernizing its luxury sedan offering, blending classic Jaguar styling with contemporary technology and improved reliability.
Manual Value Proposition
Manual Advantage:
Provides in-depth technical information essential for maintaining and repairing a complex luxury vehicle of this era, covering all major systems with detailed instructions and diagrams.
📋 Manual Details
Coverage Areas
Coverage Scope:
Comprehensive workshop repair procedures for all aspects of the Jaguar XJ6.
Page Count
Estimated Page Count:
Extensive (exact count not specified, but implied to be comprehensive).
Detailed step-by-step instructions for engine rebuilds, transmission overhauls, suspension work, brake repairs, and electrical system troubleshooting.
Diagnostics:
Troubleshooting guides and likely diagnostic procedures for various systems.
Technical Depth
Depth Of Information:
High. Covers everything from basic maintenance to complete engine and transmission rebuilds, including detailed electrical schematics.
📊 Manual Specifications
File Format
File Type:
PDF
Print Quality
Printability:
Printable (individual pages or entire manual).
Binding Type
Binding:
N/A (Digital Download)
Paper Type
Paper Quality:
N/A (Digital Download)
⚙️ Engine Specifications
Primary Engine
Engine Family:
Jaguar AJ6 (later AJ16)
Engine Configuration:
Inline-6 Cylinder (DOHC)
Displacement Options
Common Displacements:
3.6L (3590cc), 4.0L (3980cc).
Performance
Horsepower Range:
Approximately 180-220 hp depending on displacement and market.
Torque Range:
Approximately 230-280 lb-ft depending on displacement and market.
Fuel System
Fuel Delivery:
Electronic Fuel Injection (EFI) - typically Lucas/Jaguar control systems.
Engine Management
ECU Type:
Engine Control Unit (ECU) for fuel and ignition management.
🔧 Transmission
Standard Transmission
Automatic Transmission:
ZF 4HP22 (common for most models).
Optional Transmission
Manual Transmission:
Rarely offered, typically a 5-speed Getrag manual on certain early models.
Features
Transmission Control:
Hydraulic and electronic control for automatic transmissions.
Fluid Specifications
Automatic Transmission Fluid:
Specify type for ZF 4HP22 (e.g., Dexron III or equivalent, check manual for exact spec).
📐 Dimensions
Exterior
Wheelbase:
Approx. 113 inches (2870 mm)
Length:
Approx. 195 inches (4953 mm)
Weights
Curb Weight:
Approx. 3800-4000 lbs (1724-1814 kg).
🛡️ Safety Features
Active Features
Braking System:
Four-wheel disc brakes (ventilated front, solid rear), ABS (Anti-lock Braking System) introduced on later models.
Passive Features
Airbags:
Driver's side airbag introduced on later models (1990/1991 onwards).
Seatbelts:
Three-point seatbelts throughout.
💡 Technology Features
Infotainment
Audio System:
Factory-fitted premium audio systems, often with cassette players and basic AM/FM radio. Later models may have CD integration.
Driver Assistance
ABS:
Anti-lock Braking System available on most models from 1990 onwards.
Comfort Features
Climate Control:
Automatic climate control (electronic or manual) with air conditioning.
Seats:
Power-adjustable leather seats with lumbar support, memory function for driver's seat.
🔧 Maintenance
Service Intervals
Oil Change Interval:
Typically 3,000-5,000 miles (5,000-8,000 km) or 6-12 months, depending on driving conditions. Check manual for precise recommendations.
Major Service Interval:
Includes spark plugs, filters, coolant, transmission fluid, etc., usually around 30,000-60,000 miles (50,000-100,000 km).
Fluid Specifications
Engine Oil:
10W-40 or 20W-50 synthetic blend or full synthetic recommended. Capacity approximately 5-6 quarts with filter. Verify with manual.
Coolant:
Ethylene glycol-based coolant with corrosion inhibitors. Capacity approximately 9-10 quarts. Always use Jaguar-specified or equivalent.
Brake Fluid:
DOT 3 or DOT 4 brake fluid. Check reservoir for specific type.
Known Issues
Electrical Gremlins:
The XJ40 is known for its complex JEC (Jaguar Electronic Control) system, which can lead to electrical issues if not maintained. Proper wiring harness care and grounding are crucial.
Head Gasket:
While improved over earlier generations, head gasket issues can still occur with overheating. Regular coolant checks are vital.
Suspension Bushings:
Wear on suspension bushings (e.g., radius arm bushes, wishbone bushes) is common due to age and mileage, affecting ride and handling.
Oil Leaks:
Common leak points include valve cover gaskets, oil pan gaskets, and the front crankshaft seal.
📚 Vehicle History
Brand Heritage
Brand Legacy:
Jaguar has a long-standing heritage in producing elegant and powerful luxury cars known for their performance and refinement.
Model Evolution
Xj40 Development:
The XJ40 was a significant departure from the older Series III XJ, featuring a more modern (though initially controversial) design, improved aerodynamics, and significantly revised electrical systems.
Production
Manufacturing Location:
Coventry, England.
🏆 Awards & Recognition
Recognitions
Historical Acclaim:
The Jaguar XJ series has historically been lauded for its ride comfort, build quality, and timeless styling, though the XJ40 faced initial criticism for its electronics compared to German rivals.