Target Audience:
DIY Enthusiasts, Independent Mechanics, Jaguar Owners seeking self-sufficiency
Value Proposition:
Enables cost-effective maintenance and repair, provides in-depth technical knowledge, empowers independent work
Convenience:
Instant download, accessible on multiple devices
Comprehensiveness:
Covers all major systems and repair procedures
Powertrain:
Engine, Transmission, Fuel System, Cooling System, Exhaust System
Chassis:
Suspension (Front & Rear), Steering System, Brake System, Wheels & Tires, Axles & Drivetrain
Electrical:
Wiring Diagrams, Lighting System, Ignition System, Starting & Charging System, Instrumentation, Power Accessories, Engine Control System
Body:
Body Panels, Doors, Windows, Seats, Interior Trim, Climate Control, Restraint System (Airbags - if applicable, Seatbelts)
Maintenance:
General Maintenance, Periodic Lubrication, Fluid Changes, Filter Replacements, Tune-ups
Repair:
Engine Overhaul, Transmission Rebuild, Brake Component Replacement, Suspension Component Repair, Electrical Component Diagnosis and Repair
Troubleshooting:
Diagnostic Procedures, Common Fault Diagnosis, Symptom-based Troubleshooting Guides
Diagnostic Capability:
Advanced Diagnostics and Repair Procedures
Rebuild Procedures:
Complete Engine and Transmission Rebuild Instructions
Electrical Schematics:
Detailed Electrical Wiring Diagrams
Engine Type:
Inline 6-cylinder (AJ6 engine family)
Displacement:
3.6 Liters (3590 cc)
Bore X Stroke:
92.0 mm x 90.0 mm
Compression Ratio:
9.25:1
Horsepower:
Approx. 207 bhp @ 5000 rpm
Torque:
Approx. 267 lb-ft @ 3500 rpm
Fuel Delivery:
Bosch L-Jetronic Fuel Injection
Fuel Type:
Unleaded Gasoline (Premium)
ECU Type:
Engine Control Unit (ECU) for fuel injection and ignition timing
Transmission Type:
ZF 4HP22 Automatic
Transmission Type:
Getrag 5-speed Manual (less common in some markets)
Automatic Features:
Torque Converter, Lock-up Clutch, Electronic Control (later models)
Automatic Transmission Fluid:
Dexron III (or equivalent, consult manual for exact spec)
Length:
Approx. 198.2 inches (5034 mm)
Width:
Approx. 70.5 inches (1791 mm)
Height:
Approx. 53.3 inches (1354 mm)
Wheelbase:
Approx. 113.1 inches (2873 mm)
Curb Weight:
Approx. 3700 - 3900 lbs (1680 - 1770 kg)
Crash Test Data:
Limited public data for this era; primarily relied on internal testing and regulatory compliance.
Braking System:
Four-wheel disc brakes, often with Anti-lock Braking System (ABS)
Seat Belts:
Three-point seat belts (front and rear)
Airbags:
Driver-side airbag became standard on later XJ40 models, may be present on some 1988 MY.
Oil Change Interval:
Typically every 3,000 - 5,000 miles or 6-12 months, consult manual for exact recommendation.
Transmission Fluid Change:
Recommend periodic inspection and change, typically every 30,000 - 60,000 miles.
Engine Oil Type:
API SG/SH, SAE 10W-30 or 10W-40 (check manual for specific viscosity and certification)
Coolant Type:
Ethylene Glycol based antifreeze, typically a 50/50 mix with distilled water.
Brake Fluid:
DOT 3 or DOT 4 (check manual for specific type)
Electrical Gremlins:
The XJ40 generation is known for some complex electrical systems, including issues with the 'Control Unit', warning lights, and the J-Gate shifter on automatics.
Cooling System Hoses:
Aging rubber hoses can degrade and lead to leaks, requiring replacement.
Head Gasket:
While not as prevalent as in some other engines, head gasket issues can occur, especially with poor maintenance.
Suspension Bushings:
Wear and tear on rubber bushings in the suspension and steering can lead to a less precise feel and potential noise.
Jaguar Legacy:
Jaguar is renowned for its luxury, performance, and sophisticated design, carrying a legacy of sporty grand tourers and executive saloons.
Xj Series Introduction:
The XJ series has been Jaguar's flagship luxury saloon since the 1960s.
Xj40 Era:
The XJ40 generation (1986-1994) represented a significant modernization for Jaguar, moving from the classic E-Type derived styling to a more contemporary, albeit still elegant, design language.
Manufacturing Location:
Coventry, England
