Competitors 1991:
Mercedes-Benz S-Class (W126), BMW 7 Series (E32), Audi V8 Quattro, Lexus LS 400
Design Philosophy:
Epitomized Jaguar's signature blend of performance, luxury, and distinctive styling.
Target Audience:
Professional Technicians, Do-It-Yourself Mechanics with basic electrical and mechanical knowledge.
Main Coverage:
Repair and Service for Jaguar XJ6 1991
Additional Coverage:
Maintenance, Diagnostics, Troubleshooting, Reassembly, Disassembly
Estimated Page Count:
Refer to actual manual; typically 1000+ pages for comprehensive factory service manuals.
Type:
Repair Service Manual / Workshop Manual
Delivery Method:
Instant Download
Printability:
Full Printable
Zoom Functionality:
Yes (Zoom IN/OUT)
Software Requirements:
Adobe PDF Reader, WinZip
Operating System Compatibility:
All Versions of Windows & Mac
Powertrain:
Engine (3.2L and 3.6L AJ6 inline-six), Transmission (ZF 4HP22 automatic), Fuel System, Cooling System, Exhaust System
Chassis:
Suspension (front independent, rear independent with self-leveling suspension on some models), Steering (power-assisted rack and pinion), Brakes (front ventilated discs, rear discs, ABS)
Electrical:
Wiring Diagrams, Lighting, Ignition System, Starting System, Charging System, Instrumentation, Climate Control, Power Accessories (windows, locks, seats), Audio System
Body:
Body Panels, Doors, Hood, Trunk, Glass, Interior Trim, Bumpers, Seals
Maintenance:
Scheduled maintenance, oil changes, filter replacements, fluid checks and top-offs, belt inspections and replacement, spark plug replacement
Repair:
Engine rebuilds, transmission service, brake caliper and pad replacement, suspension component replacement, steering rack overhaul, electrical component diagnosis and repair, body panel repair and replacement
Diagnostics:
Troubleshooting guides, symptom-based diagnostics, common fault finding, OBD-I (On-Board Diagnostics) interpretation if applicable
Assembly Disassembly:
Detailed step-by-step instructions for removing and reinstalling major components and sub-assemblies
Depth:
Comprehensive, covering from basic maintenance to complex engine and transmission overhauls, suitable for professional technicians and advanced DIY enthusiasts.
Engine Type:
AJ6 Inline-Six (DOHC)
Engine Displacement Liter:
3.2 L (approx. 3239 cc) and 3.6 L (approx. 3590 cc)
Bore Stroke 3 2L:
83 mm x 96 mm
Bore Stroke 3 6L:
91 mm x 92 mm
Horsepower 3 2L:
Approx. 200-208 hp @ 5,000 rpm
Torque 3 2L:
Approx. 215-220 lb-ft @ 3,750 rpm
Horsepower 3 6L:
Approx. 221-227 hp @ 5,250 rpm
Torque 3 6L:
Approx. 240-243 lb-ft @ 3,750 rpm
Fuel Delivery:
Bosch L-Jetronic Fuel Injection (fully sequential for later models)
Fuel Type:
Unleaded Premium Gasoline (91 Octane or higher recommended)
Ignition System:
Electronic Ignition, Distributor-less Ignition (DIS) system on later AJ6 variants.
Type:
ZF 4HP22 4-speed Automatic Transmission
Manual Transmission:
Not commonly available for the 1991 XJ6 in most markets. Primarily automatic.
Gear Ratios 4Hp22:
Available in manual (consult manual for specific ratios). Typically includes electronic control for shift points.
Atf Type:
Dexron III or equivalent Mercon ATF (refer to manual for precise specification and capacity).
Length:
Approx. 196.3 inches (4986 mm)
Width:
Approx. 70.7 inches (1796 mm)
Height:
Approx. 53.5 inches (1359 mm)
Wheelbase:
Approx. 112.5 inches (2858 mm)
Curb Weight:
Approx. 3,800 - 4,000 lbs (1724 - 1814 kg), varies by option and market.
Certification:
NHTSA/IIHS ratings are less common for this era of luxury vehicles from European manufacturers in comprehensive digital format.
ABS:
Anti-lock Braking System (ABS) standard on most models.
Airbags:
Driver-side airbag standard. Passenger airbag not common on 1991 models.
Seatbelts:
Three-point front and rear seatbelts, driver's pretensioner.
Oil Change Interval:
Typically every 5,000-7,500 miles or 6-12 months, whichever comes first. (Consult manual for precise recommendation).
Transmission Fluid Interval:
Every 30,000-60,000 miles. (Crucial to follow manual's guidance).
Engine Oil Capacity:
Approx. 6.5 - 7.0 US Quarts (6.2 - 6.6 Liters) with filter change. Use 10W-40 or 15W-40 synthetic blend or full synthetic.
Coolant Capacity:
Approx. 10.0 US Quarts (9.5 Liters). Use a 50/50 mix of coolant and distilled water. Jaguar specific coolant may be recommended.
Brake Fluid Type:
DOT 3 or DOT 4, depending on specific system requirements. (Consult manual for precision).
Electrical:
Lucas ignition systems can be prone to issues, wiring harness degradation, self-leveling suspension pump/lines, heater blower resistor.
Mechanical:
Timing chain tensioners (pre-cautionary replacement recommended on high-mileage engines), oil leaks (e.g., 'O' rings, sump gasket), corrosion on body panels.
Oil Filter Part Number:
Various manufacturers, e.g., Mann-Filter W940/24, Fram PH2899 (verify with manual).
Air Filter Part Number:
Various manufacturers, e.g., Mann-Filter C35175/3 (verify with manual).
Tire Sizes Common:
205/70VR15, 215/65VR15, 225/55VR16 (depending on wheel option).
Wheel Bolt Pattern:
5x120.65mm (5x4.75 inches)
Legacy:
Jaguar has a long-standing reputation for building luxurious, performance-oriented sedans.
Generation:
Third Generation XJ Series (XJ40), launched in 1986.
Updates 1991:
Minor updates may have been applied. The AJ6 engine received further refinements.
Production Years:
XJ40 series production: 1986–1994
Manufacturing Location:
Coventry, England
