Vehicle Segment:
Mid-size SUV, known for its off-road capabilities and comfortable ride
Key Competitors:
Ford Explorer, Chevrolet TrailBlazer, Toyota 4Runner, Nissan Pathfinder
Powertrain Options:
Renowned for its robust inline-6 and powerful V8 engine options, and advanced 4x4 systems
Design Philosophy:
Blends on-road comfort with traditional Jeep off-road prowess
Primary Coverage:
Comprehensive service and repair
Secondary Coverage:
Body, Chassis, Electrical, Wiring Diagrams
Estimated Page Count:
Extensive, likely over 2000 pages (typical for full workshop manuals of this era)
Manual Classification:
Service Shop Manual / Workshop Manual
Engine Mechanical:
All aspects of engine assembly, disassembly, overhaul, timing, cooling, lubrication
Engine Performance:
Fuel injection, ignition system, emissions control, diagnostics
Transmission Automatic:
Service and repair of the 45RFE, 545RFE transmissions, including overhaul, torque converter, and valve body
Transmission Manual:
If applicable to specific trims, service and repair of manual gearboxes
Drivetrain 4Wd:
Service and repair of transfer cases (e.g., NV247, NV245, Quadra-Drive II system), front and rear axles, differentials, driveshafts, CV joints
Suspension:
Front and rear suspension systems, steering components, alignment specifications
Brakes:
Hydraulic system, ABS, traction control, parking brake, caliper and rotor service
Electrical System:
Battery, charging system, starting system, lighting, accessories, instrument cluster
Body And Chassis:
Frame, body panels, doors, glass, interior trim, bumpers, underbody protection
HVAC:
Heating, ventilation, air conditioning system service, diagnosis, and repair
Restraint Systems:
Airbag system components, SRS diagnosis, and service precautions
Preventive Maintenance:
Scheduled maintenance checks, fluid changes, filter replacements
Diagnostic Procedures:
Troubleshooting guides for common symptoms, diagnostic trouble codes (DTCs) and their interpretation
Repair Procedures:
Step-by-step instructions for component removal, installation, and repair
Overhaul Procedures:
Detailed instructions for engine and transmission rebuilds
Wiring Diagrams Detail:
Comprehensive electrical wiring schematics for all systems, including connector pinouts and component locations
Depth Of Coverage:
Expert level, suitable for professional technicians and advanced DIY enthusiasts
Diagnostic Capabilities:
Includes procedures for using diagnostic scan tools (e.g., DRB III), interpreting sensor data, and performing actuator tests
Special Tools:
Lists and describes necessary special tools for specific repair procedures
Engine 1 Type:
4.0L Inline-6 (242 ci) OHV PowerTech
Engine 1 Displacement:
3957 cc
Engine 1 Horsepower:
190-205 hp @ 4600-4800 rpm (depending on sub-model year and tuning)
Engine 1 Torque:
235-255 lb-ft @ 3200-3400 rpm (depending on sub-model year and tuning)
Engine 2 Type:
4.7L V8 (287 ci) Magnum SOHC
Engine 2 Displacement:
4701 cc
Engine 2 Horsepower:
235-260 hp @ 4800-5200 rpm (depending on sub-model year)
Engine 2 Torque:
295-325 lb-ft @ 3200-3600 rpm (depending on sub-model year)
Fuel Delivery:
Sequential Multi-Port Fuel Injection (MPI)
Recommended Fuel:
87 Octane (for 4.0L), 89 Octane recommended for 4.7L V8 for optimal performance
Transmission Type Std:
4-speed automatic (45RFE/545RFE)
Transmission Type Opt:
5-speed automatic (545RFE - introduced later in the WJ generation, likely standard on some 2004 models)
Transfer Case Options:
Selec-Trac NV242, Quadra-Trac II NV247 (with Vari-Lok), Quadra-Drive II NV247 (with electronic Vari-Lok differentials)
Transmission Fluid Spec:
ATF+4 (MS-9602) for 45RFE/545RFE transmissions
Wheelbase:
109.4 inches (2779 mm)
Length:
181.5 inches (4610 mm)
Width:
71.8 inches (1824 mm)
Height:
66.7 inches (1694 mm)
Curb Weight Est:
4,100 - 4,500 lbs (1860 - 2040 kg), depending on engine and trim
Towing Capacity Est:
Up to 6,500 lbs (2948 kg) with appropriate towing package
Cargo Volume Behind 2Nd Row:
Approx. 37.5 cu ft (1062 L)
Cargo Volume Max:
Approx. 71.0 cu ft (2010 L)
NHTSA Front Impact Driver:
Good (for 2004 models)
NHTSA Front Impact Passenger:
Good (for 2004 models)
IIHS Front Offset:
Acceptable (typical for vehicles of this era tested by IIHS)
ABS:
Standard 4-wheel Anti-lock Braking System (ABS)
Traction Control:
Available on Quadra-Trac II and Quadra-Drive II equipped models
Airbags:
Front airbags (driver and passenger), optional side curtain airbags (depending on trim and options)
Oil Change Interval:
Every 3,000-5,000 miles (5,000-8,000 km) or 6 months, depending on driving conditions and oil used
Engine Tune Up Interval:
Spark plugs typically every 100,000 miles for modern ignition systems, but manual will specify
Transmission Fluid Change Interval:
Every 30,000-60,000 miles (48,000-96,000 km) or as per severe service schedule
Coolant Flush Interval:
Every 30,000-50,000 miles (48,000-80,000 km) or 2-3 years
Engine Oil Spec:
SAE 5W-30 for 4.0L, SAE 5W-30 or 10W-30 for 4.7L (refer to owner's manual for specific temps)
Coolant Spec:
Chrysler's HOAT (Hybrid Organic Acid Technology) coolant, typically pink or orange
Brake Fluid Spec:
DOT 3 or DOT 4
Power Steering Fluid Spec:
ATF+4 (MS-9602) or equivalent power steering fluid
Common Issues Engine:
Cracked cylinder heads (4.7L V8), oil filter adapter housing leaks, radiator leaks
Common Issues Transmission:
Slipping, harsh shifting, transmission cooler leaks (especially when connected to radiator)
Common Issues Suspension Steering:
Worn ball joints, tie rods, track bar bushings, death wobble (severe steering shimmy)
Common Issues Electrical:
HVAC blower motor resistor failure, instrument cluster issues, tailgate liftgate actuator failure
Common Issues Other:
Water pump leaks, fuel pump failures, exhaust manifold cracks (4.7L V8)