🏷️ Basic Information

Make:

Jaguar

Model:

XJ6

Code Name:

XJ40

Chassis Code:

XJ40

👋 Introduction

Target Audience:

Jaguar XJ40 owners, independent repair shops, automotive enthusiasts

Uniqueness:

Specific to Jaguar XJ40 XJ6 models, not generic; replicates dealer technician manuals

Benefits:

Comprehensive coverage, step-by-step instructions, diagrams, wiring schematics, cost savings on repairs, empowerment for DIY maintenance

📋 Manual Details

Model Years:

1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994

All Models Included:

Yes

Estimated Page Count:

Very Extensive (Specific count not provided, described as 'complete' and 'comprehensive')

Type:

Complete Workshop Service Repair Manual

Language:

English

Digital Format:

PDF

📖 Manual Coverage

Powertrain:

Engine, Control System, Fuel Service, Emission Control, Intake/Exhaust, Cooling, Lube, Ignition, Starting, Charging, Auto Transmission, Clutch, Manual Transmission, Transfer Propeller Shaft, Drive Shaft, Differential, Axle

Chassis:

Suspension, Tire & Wheel, Brake Control, Brake, Parking Brake, Steering Column, Power Steering

Electrical And Body:

Air Condition, Suppl. Restraint System (SRS), Seat Belt, Engine Immobilizer, Cruise Control, Wiper & Washer, Door Lock, Meter, Audio/Visual, Horn, Windshield/Glass/Mirror, Instrument Panel, Seat, Engine Hood/Door, Exterior & Interior, Electrical, Multiplex/CAN Communication

Fuel System Details:

Fuel tank, fuel pump, fuel filter, fuel lines, injectors, pressure regulator, EVAP system.

Cooling System Details:

Radiator, hoses, thermostat, water pump, fan clutch, heater core, coolant expansion tank.

Ignition System Details:

Distributor, ignition coil, spark plug wires, spark plugs, ignition control module.

Suspension Details:

Front and rear suspension components, shock absorbers, springs, control arms, bushings, anti-roll bars.

Brake System Details:

Front and rear brake calipers, rotors, pads, brake master cylinder, brake lines, ABS modulator and sensors.

Steering System Details:

Steering rack, power steering pump, steering fluid reservoir, tie rods, steering column linkage.

Electrical System Details:

Battery, alternator, starter motor, wiring harnesses, fuses, relays, lighting systems, diagnostic connectors.

Body And Trim Details:

Door mechanisms, window regulators, body panels, interior trim removal and installation, weatherstripping.

Repair Scope:

Complete Repair A-Z, Diagnostics, Maintenance, Servicing

Diagnostic Methodology:

Troubleshooting, Fault Finding, Diagnostic Codes (implied by technician use)

Engine Rebuild:

Likely covers partial or full engine rebuild procedures, including cylinder head overhaul, piston and conrod installation, crankshaft and bearing replacement.

Transmission Overhaul:

Detailed procedures for rebuilding both automatic and manual transmissions, including torque converter replacement and gearset diagnosis.

Electrical Troubleshooting:

Extensive wiring diagrams, fault tracing tables, and diagnostic procedures for electrical systems, including multiplex communication.

Depth:

Factory High Detail, Step-by-Step Instructions, Diagrams, Illustrations, Wiring Schematics, Specifications

Wiring Schematics:

Complete and detailed wiring diagrams for all major vehicle systems, essential for diagnosing electrical faults.

Illustrations Diagrams:

Numerous illustrations and exploded view diagrams to aid in component identification and repair procedures.

Torque Specifications:

Precise torque values for all critical fasteners and components, crucial for proper assembly and safety.

Tolerances Clearances:

Specifications for critical engine and drivetrain component clearances (e.g., bearing clearances, ring gaps) for rebuilding.

📊 Manual Specifications

Compatibility:

All Versions of Windows and Mac

Printability:

Yes, all pages printable, allows for enlarged copies of images

Binding:

Digital (PDF) - no physical binding

Usage Style:

Print-on-demand for workshop use, avoids damage to original manual

⚙️ Engine Specifications

Engine Options:

Primarily 3.6L and 4.0L Jaguar AJ6 inline-six engines (specific variants covered by the manual are detailed within)

Horsepower Range:

Approximately 200-220 hp (for 3.6L) and 220-245 hp (for 4.0L), depending on specific model year and tune.

Fuel Delivery:

Fuel Injection (Lucas/Bosch systems likely covered), specifications for fuel pressure, injectors, and pump testing included.

🔧 Transmission

Transmission Types:

Primarily automatic transmissions (e.g., ZF 4HP22, likely detailed), with potential for manual transmission variants in some markets/configurations.

Manual Options:

Less common, but manual transmission service and specifications are mentioned as covered.

Fluid Specifications:

Detailed fluid types and capacities for automatic and manual transmissions (e.g., Dexron III or equivalent for automatics).

📐 Dimensions

Wheelbase:

Approximately 113 inches (standard wheelbase).

Cabin Description:

Spacious luxury sedan interior, with detailed information on trim, seating adjustments, and interior systems.

Curb Weight:

Approximately 3900-4200 lbs (depending on engine and options).

🛡️ Safety Features

Crash Test Data:

Limited public crash test data available for this era, but manual covers safety systems like SRS and seat belts.

Braking System:

Anti-lock Braking System (ABS) likely standard on later models, detailed coverage of brake hydraulics, pads, rotors, and ABS components.

Restraint Systems:

Supplemental Restraint System (SRS) for driver and passenger airbags, seat belt pre-tensioners, and associated control modules and wiring.

💡 Technology Features

Audio System:

Coverage for the original factory audio systems, including head units, amplifiers, and speaker diagnostics.

Cruise Control:

Detailed troubleshooting and repair procedures for the electronic cruise control system.

Multiplex Communication:

Information on the XJ40's early multiplex wiring systems, enabling diagnostics for communication between ECUs.

Electronic HVAC:

In-depth coverage of the electronic automatic climate control system, including sensor diagnostics and component testing.

🔧 Maintenance

Oil Change Interval:

Typically 5,000 - 7,500 miles or 6-12 months, but the manual will provide specific factory recommendations for each model year and engine variant.

Engine Oil:

Specific viscosity grade (e.g., 10W-40, 15W-50 depending on climate) and API service classification. Manual will list exact specs and capacities.

Common Faults:

Manual will address common XJ40 issues such as electrical gremlins (corrosion in connectors, module failures), coolant leaks (hose, radiator, water pump), suspension wear (bushings, ball joints), and potential electronic climate control issues.

Routine Tasks:

Includes checks and replacements for air filters, fuel filters, spark plugs, brake fluid, coolant, transmission fluid, power steering fluid, and accessory belts.

📚 Vehicle History

Jaguar Legacy:

Continuation of Jaguar's long history of producing luxurious and performance-oriented sedans.

Xj40 Development:

Introduced in 1986, the XJ40 represented a significant redesign from previous XJ generations, featuring a more modern (though controversial at the time) exterior and interior design, and advancements in electronics and chassis design.

Manufacturing Location:

Coventry, England

🏆 Awards & Recognition

Model Reputation:

The XJ40 is recognized for its stately road presence, comfortable ride, and potent inline-six engines, although it faced initial criticism for perceived build quality issues compared to its predecessors.