Target Audience:
DIY owners with basic mechanical skills and independent auto repair professionals
Value Proposition:
Provides dealership-level diagnostic and repair information for cost-effective maintenance and repair.
Key Advantage:
Comprehensive coverage of a specific, popular off-road vehicle, offering detailed procedures often found in factory service manuals.
Information Source:
Based on original manufacturer documentation
Diagnostics:
Includes detailed diagnostic procedures, wiring diagrams, and component testing
Powertrain:
Engine, Transmission (Automatic & Manual), Transfer Case, Driveline
Chassis:
Suspension (Front & Rear), Steering, Brakes, Wheels, Tires
Electrical:
Body Control Module (BCM), Powertrain Control Module (PCM), Lighting, Instrumentation, HVAC Controls, Audio System, Power Accessories, Diagnosis
Body & Frame:
Frame Inspection & Repair, Body Panels, Doors, Hood, Tailgate, Interior Trim, Seats, Glass, Convertible Top
Maintenance:
Fluid changes (oil, coolant, transmission, differential, brake), filter replacements, lubrication, inspections
Repair:
Engine component replacement (e.g., spark plugs, ignition coils, fuel injectors, water pump), transmission rebuilds, brake caliper replacement, suspension component servicing, electrical diagnosis and component repair
Troubleshooting:
Diagnostic trouble codes (DTCs), symptom-based troubleshooting, wiring diagrams for electrical issues
Specifications:
Torque values, clearances, fluid capacities, electrical specifications, diagnostic parameters
Depth:
Full Mechanical & Electrical Repair and Overhaul
Engine Code:
4.0L Inline 6-Cylinder (MPI - Multi-Point Injection)
Engine Displacement:
3957 cc (241.4 cubic inches)
Engine Configuration:
Inline 6
Bore X Stroke:
3.875 in x 3.579 in (98.4 mm x 90.9 mm)
Horsepower:
190 hp @ 4600 rpm
Torque:
235 lb-ft @ 3200 rpm
Engine Type:
Naturally Aspirated
Fuel Delivery:
Sequential Multi-Point Electronic Fuel Injection (MPI)
Fuel Type:
Unleaded gasoline, 87 octane minimum recommended
Fuel Tank Capacity:
19 gallons (72 liters)
Coolant Type:
Chrysler/Dodge/Jeep HOAT (Hybrid Organic Acid Technology) Antifreeze/Coolant, Blue
Transmission Type:
NV3550 5-Speed Manual Transmission
Transmission Type:
42RLE 4-Speed Automatic Transmission
Transfer Case:
NP231 Command-Trac (2WD High, 4WD High, Neutral, 4WD Low)
Fluid Specifications Manual
Fluid Type:
Mopar Manual Transmission Lubricant or equivalent (e.g., API GL-3, SAE 75W-90)
Capacity:
2.2 quarts (2.1 liters)
Fluid Specifications Automatic
Fluid Type:
Mopar ATF+4 (Automatic Transmission Fluid Type 9602)
Fluid Capacities Automatic
Capacity:
7.5 quarts (7.1 liters) (Total Fill)
NHTSA Front Impact Driver:
4 Stars (2001-2004 models)
NHTSA Front Impact Passenger:
4 Stars (2001-2004 models)
NHTSA Side Impact Front Driver:
5 Stars (2001-2004 models)
NHTSA Side Impact Front Passenger:
5 Stars (2001-2004 models)
ABS:
Standard on rear wheels, optional on front wheels for some trims
Traction Control:
Optional on some models
Airbags:
Driver and Passenger Frontal Airbags
Rollover Protection:
Integrated Roll Bar
Audio System Options:
AM/FM stereo with CD player, optional Infinity sound system
Display:
Basic digital display for odometer, trip computer, and warning lights
Cruise Control:
Optional on most models
Auxiliary Input:
Not standard, aftermarket solutions common
Engine Oil Change:
Every 3,000 miles (4,800 km) or 3 months, whichever comes first (severe duty) / Every 6,000 miles (9,600 km) or 6 months (normal duty)
Engine Oil Filter Replacement:
With every oil change
Engine Coolant Flush And Refill:
Every 30,000 miles (48,000 km) or 3 years
Transmission Fluid Change Manual:
Every 60,000 miles (96,000 km) or 4 years
Transmission Fluid Change Automatic:
Every 30,000 miles (48,000 km) or 2 years (severe duty) / Every 60,000 miles (96,000 km) or 4 years (normal duty)
Transfer Case Fluid Change:
Every 60,000 miles (96,000 km) or 4 years
Differential Fluid Change:
Every 30,000 miles (48,000 km) or 2 years (off-road use) / Every 60,000 miles (96,000 km) or 4 years (normal use)
Engine Oil Type:
SAE 10W-30 (API SN or higher)
Engine Oil Capacity:
6 quarts (5.7 liters) with filter
Power Steering Fluid Type:
Mopar Power Steering Fluid or equivalent (Dexron III/Mercon compatible)
Common Problem 1:
Cracked exhaust manifolds (especially on the 4.0L I6)
Common Problem 2:
Oil filter housing leaks
Common Problem 3:
Worn steering components (tie rod ends, drag link)
Common Problem 4:
Blend door actuator failure in HVAC system
Common Problem 5:
Rusting on rocker panels and floor pans, especially in areas with road salt.
Off Road Considerations:
Increased frequency of suspension, drivetrain, and fluid checks when used extensively off-road.
Jeep Legacy:
Built upon the rugged reputation of military Jeeps and the original CJ series
Tj Introduction:
Introduced for the 1997 model year, the TJ Wrangler marked a significant departure with its coil spring suspension, replacing the leaf springs of its YJ predecessor.
2003 Updates:
Minor updates including improved seat design and optional features.
2004 Updates:
Introduction of the Rubicon model with an electronically locking front differential and revised transfer case for enhanced off-road capability. Exterior color updates.
Production Location:
Toledo, Ohio, USA
Production Years:
1997-2006 (TJ Generation)
Off Road Capability Award:
Consistently recognized for its superior off-road capabilities by automotive publications and enthusiasts.
Consumer Satisfaction:
Generally positive for its core purpose, though some common wear items are noted.
Emissions Compliance:
Meets EPA and CARB emissions standards for its model years.
