Target Audience:
Professional mechanics, Jaguar dealerships, and experienced DIY enthusiasts
Manual Advantage:
Provides the same depth of information as official Jaguar service manuals, at a fraction of the cost, with the convenience of digital access.
Illustration Quality:
Includes detailed illustrations, drawings, and photos for procedural guidance.
Navigation:
Numbered table of contents for quick information retrieval.
Safety Notes:
Notes, cautions, and warnings integrated within repair procedures.
Instruction Format:
Numbered, step-by-step instructions with bold figure numbers for easy illustration matching.
Delivery Method:
Instant Download with no shipping costs or waiting period.
Engine Mechanical:
Detailed overhaul and repair of the AJ6 inline-six engine (4.0L)
Engine Management:
Fuel injection, ignition system, emission control, engine diagnostics and troubleshooting
Transmission Automatic:
Repair, overhaul, and service of the ZF 4HP22 automatic transmission
Drivetrain:
Rear axle, driveshafts, propeller shaft
Suspension:
Front and rear independent suspension systems, shock absorbers, springs, bushings, alignment
Steering:
Power steering system, steering rack, linkages
Brakes:
Hydraulic system, ABS (Anti-lock Braking System), brake pads, rotors, lines, calipers
Electrical System:
Complete wiring diagrams, lighting, starting and charging system, instrumentation, auxiliary systems
Climate Control:
Air conditioning, heating, ventilation system service and repair
Bodywork And Trim:
Body panel repair, interior trim removal and installation, glass replacement
Maintenance Tasks:
Scheduled maintenance, oil changes, filter replacements, tune-ups, fluid checks
Diagnostic Procedures:
Comprehensive troubleshooting guides for common and complex issues
Repair Procedures:
Step-by-step instructions for component removal, repair, and reinstallation
Rebuild Procedures:
Detailed instructions for complete engine and transmission overhauls
Electrical Troubleshooting:
Fault finding for electrical systems using wiring diagrams
Special Tool Requirements:
Identification and usage of specialized tools required for Jaguar repairs
Diagnostic Capabilities:
Advanced diagnostics covering engine management, ABS, and other electronic systems
Rebuilding Scope:
Full mechanical and electrical system rebuilding instructions
Detail Level:
Extremely detailed, suitable for professional technicians and advanced DIY enthusiasts
Engine Code:
AJ6 (likely AJ6 4.0L)
Engine Type:
Naturally aspirated, Inline-6 cylinder
Displacement:
3.6 Liters (early models) or 4.0 Liters (likely for 1990 model)
Horsepower Approx:
Approx. 221 hp (for 4.0L)
Torque Approx:
Approx. 237 lb-ft (for 4.0L)
Fuel Delivery:
Multi-point Fuel Injection (EFI)
Fuel Type:
Unleaded Petrol
NHTSA Ratings:
Specific NHTSA ratings for the 1990 XJ6 are not readily available but were generally not as standardized or publicly released as they are today.
ABS:
Standard Anti-lock Braking System (ABS)
Airbags:
Driver-side airbag standard; passenger airbag not standard on all models for this year.
Seatbelts:
3-point seatbelts with pretensioners
Audio System:
Factory-installed premium audio system, often with cassette player and radio.
Climate Control Technology:
Automatic climate control system with electronic controls.
Cruise Control:
Standard cruise control system.
Connectivity Options:
Limited by era; primarily focused on vehicle systems and basic audio features. No modern Bluetooth or USB integration.
Oil Change Interval:
Typically 3,000-5,000 miles or 6 months, but consult manual for specific engine and oil type recommendations.
Transmission Fluid Service:
Recommended every 30,000-60,000 miles, depending on driving conditions.
Engine Oil:
Consult manual for specific API/ACEA ratings and viscosity grades (e.g., SAE 10W-30 or 10W-40)
Coolant:
Ethylene glycol-based coolant with appropriate antifreeze protection level.
Brake Fluid:
DOT 3 or DOT 4 brake fluid (check manual for specific recommendation).
Power Steering Fluid:
Specific hydraulic fluid, likely Jaguar recommended type or equivalent.
Transmission Fluid:
ZF TE-ML 14A or equivalent (e.g., Dexron III, but consult manual for absolute certainty).
Electrical Gremlins:
The XJ40 is known for its complex electrical system, with potential issues related to wiring insulation, connections, and control modules.
Head Gasket:
While less common on the AJ6 than earlier engines, head gasket integrity is always a point of attention in high-performance engines.
Suspension Wear:
Bushings and components in the independent suspension can wear over time, affecting ride quality and handling.
Air Suspension Issues:
If equipped with air suspension (less common on base XJ6 but possible on variants), leaks and compressor issues can arise.
Jaguar Legacy:
Jaguar has a long history of producing luxury and performance automobiles, known for their blend of comfort, style, and engineering.
Xj Series Context:
The XJ series has been Jaguar's flagship luxury sedan for decades, representing the pinnacle of the brand's design and engineering.
Xj40 Introduction:
The XJ40 generation, introduced in 1986, marked a significant departure from previous XJ designs, featuring more modern styling and advanced technology.
Production Period:
The XJ40 generation was produced from 1986 to 1994.
