Value Proposition:
The definitive workshop manual for Jaguar XJ8/XJR X308 owners and technicians, offering unparalleled detail.
Comparison To Jtis:
Distinct from JTIS, providing a dedicated and comprehensive resource.
Navigation:
Features a full autorun menu for user-friendly access to information.
Manual Coverage Scope:
Comprehensive maintenance, service, troubleshooting, and repair procedures for Jaguar XJ8 and XJR X308 models.
Type:
Official Workshop Service Manual
Format:
Digital Download (with autorun menu)
Powertrain:
Engine overhaul, rebuilding, transmission service, removal, and installation.
Electrical System:
Complete electrical guides, troubleshooting, and diagnostics.
Chassis Suspension Steering:
Front end alignment, steering, and suspension systems.
Braking System:
Brake servicing procedures.
Exhaust System:
Exhaust servicing.
Cooling System:
Cooling system maintenance and repair.
Bodywork:
Bodywork procedures and repair.
Instrumentation:
Complete instrument panel procedures.
Fuel System:
Fuel delivery, pump, injectors, and lines.
Emission Control:
Emission control systems, catalytic converters, and oxygen sensors.
Climate Control:
HVAC system, refrigerant, and controls.
Diagnostics:
Troubleshooting and diagnostics, diagnostic trouble codes (DTCs) and resolutions.
Maintenance:
Factory maintenance schedules, belt routing.
Technical Data:
Torque settings, engine firing order.
Wiring Diagrams:
Detailed electrical wiring diagrams are a critical component of the electrical guides.
Component Replacement:
Step-by-step instructions for replacing all major components.
Depth:
Detailed, from basic maintenance to complete engine rebuilding and advanced diagnostics.
Diagnostics Tools:
Information on diagnostic trouble codes (DTCs) and how to interpret them using Jaguar-specific or OBD-II scanners.
Engine Type:
Jaguar AJ-V8 (Naturally Aspirated and Supercharged)
Xjr Supercharged Power:
Typically around 370 hp for the 4.0L Supercharged variant.
Xj8 Naturally Aspirated Power:
Typically around 290-300 hp for the 4.0L Naturally Aspirated variant.
Injection Type:
Sequential Fuel Injection (SFI)
Engine Sizes:
Primarily 4.0-liter (3996 cc) V8, with variations for naturally aspirated (XJ8) and supercharged (XJR).
Cylinder Head Design:
Double Overhead Camshaft (DOHC), 4 valves per cylinder.
Transmission Type Xj8:
ZF 5HP24 5-speed automatic transmission.
Transmission Type Xjr:
ZF 5HP24 5-speed automatic transmission (often with a sport mode).
Optional Gearbox:
None (5-speed automatic was standard across X308 models).
Transmission Fluid Type:
Mercon V or equivalent (e.g., Mobil ATF 3309).
Crash Test Information:
While official NHTSA ratings for this era are limited, the X308 chassis offered robust safety features for its time.
Brake System:
Anti-lock Braking System (ABS) standard on all models.
Traction Control:
Traction Control System (TCS) available, particularly on XJR models.
Airbags:
Driver and front passenger airbags; side airbags optional on some later models.
Body Structure:
Reinforced safety cell and crumple zones.
Oil Change Interval:
Typically every 7,500 miles or 12 months, whichever comes first, using the correct synthetic oil.
Transmission Fluid Interval:
Recommended at 60,000-100,000 miles, or as specified in the manual.
Engine Oil Type:
API SJ or higher, SAE 5W-30 or 5W-40 synthetic oil recommended.
Coolant Type:
Ethylene glycol-based coolant with corrosion inhibitors (e.g., Jaguar's recommended coolant).
Brake Fluid Type:
DOT 3 or DOT 4 brake fluid.
Timing Chain Tensioners:
Early AJ-V8 engines (especially pre-2002) are known for brittle plastic timing chain tensioners that can fail, leading to severe engine damage. The manual will detail inspection and replacement procedures.
Sinking Headliner:
A common cosmetic issue where the headliner fabric detaches.
Vibrations At Speed:
Can be caused by driveshaft balancing, tire issues, or suspension components. The manual covers diagnosis.
Coil On Plug Failures:
Ignition coil failures can lead to misfires. The manual covers testing and replacement.
Supercharger Coupler:
On XJR models, the supercharger drive coupler can wear out, causing a whining noise. Manual details inspection and replacement.
Oil Filter Example:
e.g., Mann-Filter W940/24, Fram PH3600 (verify specific fitment).
Air Filter Example:
e.g., Mann-Filter C35160 (verify specific fitment).
Jaguar Legacy:
Continues Jaguar's tradition of luxury, performance, and sophisticated design.
X300 To X308 Transition:
The X308 replaced the X300, featuring a significantly updated all-aluminum AJ-V8 engine and revised styling, marking a departure from the inline-six engines of its predecessor.
Production Years:
1997-2003
