🏷️ Basic Information

Make:

Jaguar

Model:

XJ6

Chassis Code:

XJ40

Model Years Covered:

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

Generation Name:

XJ40

Generation Introduction Year:

1986

Generation End Year:

1994

👋 Introduction

Market Position:

Luxury sedan, competing with models like the Mercedes-Benz S-Class, BMW 7 Series, and Audi V8/A8 of the era.

Competitive Analysis:

The XJ40 represented Jaguar's effort to modernize its flagship saloon, moving away from older designs towards a more contemporary, yet still elegant, aesthetic. Its strengths lay in ride comfort, refined handling, and luxurious interior appointments. Its main challenge was to overcome historical reliability concerns associated with British automotive manufacturing.

Key Features:

Aerodynamic styling, independent rear suspension, advanced (for its time) electronics, refined six-cylinder engines, luxurious interior materials.

📋 Manual Details

Models Covered:

All XJ6 XJ40 Series models, engines, trims, and transmission types

Page Count Estimate:

Likely over 1000 pages (typical for comprehensive workshop manuals of this era)

Manual Type:

Complete Workshop Service Repair Manual

Language:

English

Format:

Downloadable (PDF or similar digital format)

Print Capability:

Printable (individual pages, chapters, or entire manual)

Device Compatibility:

Compatible with PC, Mac, tablets, and smartphones

Required Software:

Adobe Reader (free download)

📖 Manual Coverage

Engine Mechanical:

Engine assembly, disassembly, overhaul, cylinder head, block, pistons, crankshaft, camshafts, timing

Engine Management:

Fuel injection systems (e.g., Lucas/Bosch L-Jetronic, potentially early EFI), ignition systems, engine control unit (ECU) diagnostics and repair

Cooling System:

Radiator, water pump, thermostat, hoses, fan system, coolant specifications

Fuel System:

Fuel tank, fuel pump, fuel lines, fuel filter, injectors, pressure regulation

Exhaust System:

Exhaust manifold, catalytic converter, mufflers, pipes, emissions control systems

Transmission Automatic:

ZF 4HP22 automatic transmission: overhaul, diagnostics, fluid types, capacities, torque converter

Transmission Manual:

Manual gearbox (less common on XJ6 XJ40, but coverage may exist for specific markets/models): overhaul, fluid specifications

Drivetrain:

Propeller shaft, universal joints, rear axle, differential, driveshafts

Suspension Front:

Double wishbone, coil springs, dampers, anti-roll bar, steering knuckle, bush replacement

Suspension Rear:

Multi-link independent rear suspension: control arms, dampers, springs, bush replacement

Brakes Front:

Vented disc brakes, calipers, pads, rotors, brake fluid specifications, ABS (Anti-lock Braking System) components and diagnostics

Brakes Rear:

Solid disc brakes, calipers, pads, rotors, parking brake system, ABS components and diagnostics

Steering:

Power steering system, steering rack, steering column, power steering fluid, alignment specifications

Electrical System:

12V battery, alternator, starter motor, wiring diagrams, fuse box layouts, relays

Lighting:

Headlights, taillights, interior lights, bulb specifications, aiming procedures

Instrumentation:

Dashboard instruments, gauges, warning lights, warning chime system (e.g., 'J-gate' indicators if applicable)

Comfort And Convenience:

HVAC system (heating, ventilation, air conditioning), power windows, power seats, central locking, cruise control

Body And Chassis:

Body panel removal and installation, door mechanisms, hood, trunk, trim components

Body Structure:

Frame structure, chassis components, corrosion protection

Glass:

Windscreen, side glass, rear glass removal and installation

Lubrication System:

Oil pump, oil filter, oil cooler, oil specifications, pressure testing

Maintenance Tasks:

Scheduled maintenance, oil changes, filter replacements, fluid level checks, spark plug replacement, belt inspection/replacement

Troubleshooting:

Diagnostic procedures for common problems, fault code interpretation (if applicable), electrical system diagnostics

Repair Procedures:

Step-by-step instructions for component repair and replacement (e.g., alternator replacement, brake caliper rebuild, suspension bush replacement)

Overhaul Procedures:

Complete engine and transmission overhaul instructions

Diagnostics:

Detailed diagnostic flowcharts and tests for various systems

Specification Charts:

Torque specifications, clearances, tolerances, and adjustment procedures

Technical Depth:

Comprehensive, covering everything from basic maintenance to full engine/transmission rebuilds and complex electrical diagnostics

📊 Manual Specifications

File Format:

Digital (e.g., PDF)

Print Quality Expectation:

High-resolution scans of original factory manuals, ensuring clarity of text and images

Binding Type Digital:

N/A (Digital format)

Paper Type Digital:

N/A (Digital format)

⚙️ Engine Specifications

Engine Code:

AJ6 (3.6L and 4.0L)

Engine Type:

Inline-6, DOHC

Displacement 3.6L:

3590 cc (3.6 Liters)

Displacement 4.0L:

3980 cc (4.0 Liters)

Horsepower 3.6L:

Approx. 200-220 hp (depending on market and year)

Torque 3.6L:

Approx. 235-245 lb-ft (depending on market and year)

Horsepower 4.0L:

Approx. 225-245 hp (depending on market and year)

Torque 4.0L:

Approx. 270-280 lb-ft (depending on market and year)

Fuel System Type:

Electronic Fuel Injection (EFI), typically Lucas or Bosch systems

Fuel Type:

Unleaded Gasoline

🔧 Transmission

Standard Transmission Type:

4-speed automatic (ZF 4HP22)

Optional Transmission Type:

5-speed manual (available on early 3.6L models in some markets, less common)

Automatic Transmission Features:

Selectable Sport/Economy modes, 'J-gate' shifter (later models).

📐 Dimensions

Wheelbase:

Approx. 113 inches (2870 mm)

Length:

Approx. 197.4 inches (5014 mm)

Width:

Approx. 70.1 inches (1780 mm)

Height:

Approx. 53.5 inches (1359 mm)

Curb Weight:

Approx. 3800-4000 lbs (1724-1814 kg), varies by model and equipment

🛡️ Safety Features

Safety Ratings:

No extensive government crash test data readily available for this era of vehicle from specific sources like NHTSA. Jaguar typically focused on robust construction and passive safety features.

Active Safety Features:

Anti-lock Braking System (ABS), power assisted steering.

Passive Safety Features:

Energy-absorbing steering column, padded interior surfaces, three-point seatbelts, reinforced door beams.

💡 Technology Features

Infotainment System:

Basic analog radio/cassette player, often with amplifier and premium speaker system. Later models may have optional CD players.

Driver Assistance Features:

Cruise control, ABS.

Connectivity Features:

Limited by era, primarily focused on vehicle systems. No integrated Bluetooth or navigation systems available from the factory for most of this period.

🔧 Maintenance

Oil Change Interval:

Typically every 5,000-7,500 miles or annually, consult manual for specific grade.

Transmission Fluid Change:

Every 30,000-50,000 miles or as specified, fluid type: ATF Dexron-III equivalent.

Coolant Change Interval:

Every 2-3 years or 30,000-50,000 miles.

Engine Oil Specification:

API SG/SH, viscosity typically 10W-40 or 10W-30 depending on climate. Consult manual for exact spec.

Brake Fluid Specification:

DOT 3 or DOT 4.

Power Steering Fluid:

ATF Dexron-II or Dexron-III equivalent.

Known Issues:

Early models prone to electrical issues (e.g., Lucas components, dashboard warning lights, ABS faults), suspension bushings wear, radiator/cooling system leaks, head gasket failures on high mileage engines, potential headliner sagging.

📚 Vehicle History

Brand Heritage:

Jaguar has a long-standing reputation for producing elegant, performance-oriented luxury cars, with a strong motorsport lineage. The XJ series has been the flagship saloon since the original XJ6 introduced in 1968.

Model Evolution:

The XJ40 was a significant departure from its predecessor (the Series III XJ), featuring a more aerodynamic and contemporary design penned by Pininfarina and Jaguar's in-house team. It introduced a new electrical architecture and a revised suspension system for improved handling and ride comfort. Early models had some notorious electrical gremlins and build quality issues, which were gradually addressed through production.

Production Period:

1986-1994

Production Location:

Coventry, England

🏆 Awards & Recognition

Recognitions:

While specific awards are not highlighted in the product description, the XJ40 was generally praised for its ride and handling characteristics, often being referred to as a benchmark for luxury car refinement in its class during the late 1980s and early 1990s.