Essential diagnostic and repair resource for Jeep Wrangler TJ owners and independent mechanics.
Competitive Analysis
Value Proposition:
Provides detailed, manufacturer-level information often unavailable in generic Haynes or Chilton manuals, enabling DIY repairs and informed service decisions.
Key Features
Diy Focus:
Empowers owners to perform a wide range of maintenance and repair tasks, saving on labor costs and ensuring quality.
Professional Diagnostics:
Contains the technical data and procedures used by dealership technicians.
📋 Manual Details
Coverage Areas
All Service Repair:
Yes
Page Count
Estimated Pages:
1000+
Manual Type
Type:
Service and Repair Manual
Language
Language:
English
Format
Format:
Downloadable Digital Format (PDF)
📖 Manual Coverage
Systems Covered
Engine Mechanical:
Complete
Engine Management:
Complete
Transmission Manual:
Complete
Transmission Automatic:
Complete
Drivetrain 4Wd:
Complete
Suspension:
Complete
Steering:
Complete
Brakes:
Complete
Electrical System:
Complete
Body And Chassis:
Complete
HVAC:
Complete
Restraints Safety:
Complete
Procedures Included
Routine Maintenance:
Included
Troubleshooting Diagnostics:
Included
Component Repair Rebuild:
Included
Component Replacement:
Included
Wiring Diagrams:
Included
Torque Specifications:
Included
Technical Depth
Depth:
Comprehensive (from basic service to full overhaul)
📊 Manual Specifications
File Format
File Type:
PDF
Searchable Text:
Yes
Print Quality
Printability:
High (Designed for printing)
Binding Type
Binding:
N/A (Digital Download)
Paper Type
Paper:
N/A (Digital Download)
⚙️ Engine Specifications
Primary Engine
Engine Option 1:
4.0L Inline 6-Cylinder (242 cu in)
Engine Code 1:
ERH
Engine Displacement 1:
3952 cc
Engine Bore Stroke 1:
3.88 x 3.41 inches (98.5 x 86.7 mm)
Engine Compression Ratio 1:
8.8:1
Engine Horsepower 1:
190 hp @ 4600 RPM
Engine Torque 1:
235 lb-ft @ 3200 RPM
Fuel System
Fuel Delivery 1:
Sequential Multi-Port Fuel Injection (MPI)
Fuel Type 1:
Unleaded Gasoline (87 Octane Recommended)
Engine Option 2
Engine Option 2:
2.4L 4-Cylinder (148 cu in) (Less Common for 2004 TJ)
None standard in 2004 (focus on core off-road capability).
Connectivity
Connectivity Options:
None standard (auxiliary input jacks may be present on some aftermarket head units).
🔧 Maintenance
Service Intervals
Oil Change Interval Synthetic:
7,500 miles (12,000 km) or 6 months
Oil Change Interval Conventional:
5,000 miles (8,000 km) or 6 months
Air Filter Replacement:
Every 15,000 miles (24,000 km) or annually, or more often in dusty conditions
Spark Plug Replacement:
100,000 miles (160,000 km) (if equipped with original NGK iridium plugs)
Coolant Flush:
Every 5 years or 100,000 miles (160,000 km)
Fluid Specifications
Engine Oil Spec 4.0L:
SAE 10W-30 (API Service SJ or higher)
Coolant Type:
Mopar Antifreeze/Coolant (HOAT) or equivalent
Fluid Capacities
Engine Oil Capacity 4.0L:
5 Quarts (4.7 Liters) with filter change
Coolant Capacity:
9.5 Quarts (9.0 Liters)
Known Issues
Common Issue 1:
Cracking exhaust manifolds (especially on 4.0L engines).
Common Issue 2:
Death Wobble (shimmy or violent shaking of the steering wheel at certain speeds, often due to worn suspension components).
Common Issue 3:
Actuator failures in HVAC controls.
Common Issue 4:
Radiator leaks and frequent overheating.
Common Issue 5:
Oil filter adapter housing leaks.
📚 Vehicle History
Brand Heritage
Jeep Legacy:
Rooted in military utility vehicles, Jeep has a long history of rugged, off-road capable vehicles.
Model Evolution
Tj Introduction:
The TJ Wrangler was introduced for the 1997 model year, representing a significant redesign from the YJ, returning to round headlights and coil springs on all four corners.
Tj Generations:
The TJ generation ran from 1997 to 2006, with minor updates and the introduction of the powerful 4.0L inline-six as a mainstay.
Production
Manufacturing Location:
Toledo, Ohio, USA
Production Period:
1997-2006
🏆 Awards & Recognition
Recognitions
Off Road Capability:
Consistently praised in automotive press for its class-leading off-road prowess and iconic design.
Ratings
Consumer Reports Rating:
Varies by model year and specific report, but generally recognized for durability in its segment.
Certifications
Emissions Certification:
EPA compliant for 2004 model year emissions standards.