Market Position:
Premium Luxury Sedan, competitor to Mercedes-Benz S-Class, BMW 7 Series, and higher-end American sedans of the era.
Key Features:
Renowned for its refined ride, opulent interior, distinctive styling, and the characteristic Jaguar driving experience.
Manual Purpose:
To provide detailed instructions and specifications for the repair, maintenance, and servicing of the 1989-1994 Jaguar XJ6.
Competitive Analysis:
Positioned as a more sporting and stylish alternative to the American luxury sedans and a more value-oriented alternative to the established German luxury marques. Its unique British charm was a significant selling point.
Systems Covered:
Engine, Carburetor and Fuel System, Cooling System, Clutch, Gearbox, Propeller Shaft, Rear Axle, Steering, Front Suspension, Rear Suspension, Brakes, Wheels and Tyres, Body and Exhaust System, Heating and Windscreen, Electrical Systems
Procedures Included:
General Maintenance, Routine Servicing, Component Repair, Troubleshooting, Diagnostic Procedures, Overhaul and Reassembly
Technical Depth:
Comprehensive (from basic maintenance to complete rebuilds and diagnostics)
Electrical Schematics:
Detailed wiring diagrams and electrical schematics are a crucial part of this manual, covering all vehicle circuits.
Diagnostic Procedures:
Step-by-step diagnostic flowcharts and troubleshooting guides for common electrical and mechanical faults.
Body And Exhaust:
Coverage includes body panel repair, door mechanisms, hinges, latches, trim, and the complete exhaust system.
Heating And Windscreen:
Details on HVAC system operation, blower motor, heater core, AC system, windscreen wipers, washers, and demister functions.
Engine Type:
Inline-6 (AJ6)
Displacement:
3.2 Liters (3239 cc) and 4.0 Liters (3980 cc)
Bore X Stroke 4.0L:
91 mm x 102 mm
Compression Ratio 4.0L:
9.5:1
Horsepower Approx:
221 hp @ 5250 rpm
Torque Approx:
277 lb-ft @ 3500 rpm
Fuel Delivery:
Electronic Fuel Injection (EFI) with Lucas/Bosch components.
Fuel Type:
Unleaded Premium Gasoline
Ignition Type:
Electronic Ignition (Distributorless on later models)
Engine Codes Example:
Examples include 4.0 AJ6.
Transmission Type:
Automatic
Transmission Model:
ZF 4HP22 (4-speed automatic)
Transmission Type:
Manual
Transmission Model:
Getrag 5-speed manual (less common, typically on earlier models or specific markets)
Automatic Transmission Fluid Type:
Dexron II / Mercon equivalent (refer to manual for exact specification and quantity)
Transmission Features:
Lock-up torque converter for improved efficiency
Gear Ratios:
Specific gear ratios for the ZF 4HP22 transmission are detailed within the manual.
Length:
Approx. 5000-5050 mm (197-199 inches) depending on model year and bumper configuration
Width:
Approx. 1793 mm (70.6 inches)
Height:
Approx. 1390-1400 mm (54.7-55.1 inches)
Wheelbase:
Approx. 2870 mm (113 inches)
Curb Weight Approx:
1700-1800 kg (3750-3970 lbs)
Wheel Bolt Pattern:
5 x 120.65 mm (5 x 4.75 inches)
Wheel Offset:
Typically ET35 to ET45
Standard Tire Size Examples:
205/70 VR 15, 215/65 VR 15, 205/60 VR 16 (refer to manual for exact fitment based on year and options).
Passive Safety:
Three-point seatbelts, padded dashboard, impact-absorbing steering column, side-impact beams (introduced during XJ40 production).
Active Safety:
Anti-lock Braking System (ABS) - standard on most models by this period.
Driver Airbag:
Standard on later models (introduced in 1990/1991 model years).
Infotainment System:
Original systems typically featured AM/FM radio with cassette player, often with power antenna. Optional CD players were available on later models. Sound systems were generally high-quality for the era.
Climate Control System:
Automatic climate control with air conditioning was a standard feature, utilizing R-12 refrigerant initially, transitioning to R-134a in later years.
Headlight Type:
Halogen headlights, often dual-round or rectangular configuration depending on year and market.
Driver Assistance Features:
ABS, cruise control.
Oil Change Interval:
Typically every 5,000-7,500 miles or 12 months (consult manual for precise intervals and conditions).
Major Service Interval:
Refer to manual for specific mileages for spark plug replacement, coolant flush, transmission service, etc.
Engine Oil Type:
SAE 15W-50 or 20W-50 (API SG or higher) is often recommended for Jaguar engines of this era. Consult manual for exact viscosity based on climate and specific engine revision.
Coolant Type:
Ethylene Glycol based, typically with a 50/50 mix with distilled water. Ensure compatibility with Jaguar's specified coolant.
Brake Fluid Type:
DOT 3 or DOT 4.
Known Issues:
Potential for head gasket issues (especially on earlier 4.0L), ABS warning light illumination, suspension self-leveling system leaks (if equipped), electrical gremlins, and aging rubber components. Regular preventative maintenance is key.
Oil Filter Example:
Wix 51515, Fram PH8394 (Cross-reference with original Jaguar parts or reputable aftermarket suppliers is essential).
Parts Catalog Integration:
This manual includes part numbers, essential for ordering correct replacement components.
Lug Nut Torque:
Approximately 100-120 Nm (74-89 lb-ft) - consult manual for precise value.
Special Tools Required:
The manual will likely list specific Jaguar special tools required for certain procedures (e.g., fuel line disconnect tools, engine timing tools).
Brand Heritage:
Jaguar Cars is a British manufacturer with a long history of producing elegant, high-performance luxury cars known for their sporting character and craftsmanship.
Model Evolution Xj40:
The XJ40 replaced the older Series III XJ. It featured a more modern, yet still distinctively Jaguar, design with significant improvements in aerodynamics, engineering, and interior comfort. Early models experienced some teething issues, but later revisions (especially post-1990) addressed many of these.
Production Period:
1986-1994
Manufacturing Location:
Coventry, England
