🏷️ Basic Information

Make:

Jeep

Model:

Wrangler

Year:

2004

Chassis Code:

TJ

👋 Introduction

Positioning:

The 2004 Jeep Wrangler (TJ) is positioned as an iconic, highly capable off-road vehicle with a strong emphasis on ruggedness, open-air driving, and a distinct utilitarian design. It caters to enthusiasts and individuals seeking adventure and off-road prowess.

Competitors:

Primary competitors include the Toyota FJ Cruiser (later models), Hummer H3, and various aftermarket modified SUVs. However, the Wrangler's unmatched leaf-spring solid axle setup and iconic open-top design set it apart.

Distinctive Attributes:

Solid front and rear axles, removable doors and top, fold-down windshield, short wheelbase, robust powertrain options, legendary off-road capability.

📋 Manual Details

Powertrain:

Complete coverage

Body:

Complete coverage

Chassis:

Complete coverage

Transmission:

Complete coverage

Estimated Pages:

Over 1500

Type:

Factory Service Manual / Workshop Manual

Language:

English

Format:

Printed Manual

📖 Manual Coverage

Engine Systems:

Engine mechanical, fuel system, ignition system, cooling system, lubrication system, exhaust system, emissions control

Transmission Systems:

Manual transmission (NV3550), Automatic transmission (42RLE), transfer case (NP231), driveline, clutch system

Chassis Systems:

Suspension (front and rear solid axles), steering, brakes (ABS optional), wheels and tires

Body And Frame:

Body panels, doors, windows, convertible top, interior trim, frame and body mounting, bumpers

Electrical Systems:

Battery, charging system, starting system, lighting, instruments, gauges, power windows, power locks, horn, radio, wipers, HVAC controls

Diagnostics:

Diagnostic Trouble Codes (DTCs), diagnostic procedures for all systems

Maintenance Procedures:

Oil changes, filter replacements, fluid checks and changes, spark plug replacement, belt inspection and replacement, brake pad replacement, tire rotation

Repair Procedures:

Engine overhaul, transmission rebuild, clutch replacement, suspension component replacement, brake caliper and rotor replacement, electrical component diagnosis and replacement

Troubleshooting Guides:

Step-by-step diagnostic flowcharts for common and uncommon issues

Specifications:

Torque specifications for all fasteners, diagnostic specifications (e.g., resistance, voltage), alignment specifications

Wiring Diagrams:

Comprehensive electrical wiring diagrams for all vehicle systems

Depth:

Expert level; covers everything from routine maintenance to complete engine and transmission overhauls, including advanced diagnostics and component-level repair.

📊 Manual Specifications

Digital Format Details:

N/A (Printed Manual)

Paper Type:

High-quality, durable paper stock designed for workshop environments

Print Resolution:

Clear, legible text and high-resolution diagrams/illustrations

Binding:

Sturdy, professional binding suitable for frequent use and lay-flat readability

⚙️ Engine Specifications

Engine Code:

4.0L Inline-6 (MVP/SOHC)

Engine Displacement:

3952 cc (241 cubic inches)

Bore X Stroke:

3.88 x 3.41 inches (98.5 x 86.7 mm)

Compression Ratio:

8.8:1

Horsepower:

190 hp @ 4600 rpm (SAE Net)

Torque:

235 lb-ft @ 3200 rpm (SAE Net)

Valve Train:

Overhead Valve (OHV), 12 valves

Engine Block Material:

Cast Iron

Cylinder Head Material:

Aluminum

Fuel Delivery:

Multi-Point Fuel Injection (MPI)

Fuel Type:

Unleaded Gasoline, 87 Octane (Regular)

Engine Code:

2.4L DOHC I4 (optional on some trims)

Engine Displacement I4:

2429 cc (148 cubic inches)

Horsepower I4:

156 hp @ 5800 rpm

Torque I4:

170 lb-ft @ 4200 rpm

🔧 Transmission

Transmission Type:

NV3550 5-Speed Manual Transmission

Clutch Type:

Hydraulic Actuated, Dry Single Plate

Transmission Type:

42RLE 4-Speed Automatic Transmission

Transfer Case:

NP231 Command-Trac NV241J (Part-time, 2-speed, 2.72:1 low-range ratio)

Axle Ratios:

Available in 3.73:1, 4.10:1 (with Rubicon package)

Manual Transmission Fluid:

Chrysler MS-9224 (SAE 75W-90 GL-3/GL-4)

Automatic Transmission Fluid:

ATF+4 (Mopar)

Transfer Case Fluid:

NV241 (Mopar Part No. 04874468 / 05010249AA) SAE 75W-90 GL-5

📐 Dimensions

Wheelbase:

93.4 inches (2372 mm)

Length:

157.5 inches (4001 mm)

Width:

66.4 inches (1687 mm)

Height:

71.0 inches (1803 mm)

Ground Clearance:

10.2 inches (259 mm)

Approach Angle:

43.4 degrees

Departure Angle:

32.7 degrees

Breakover Angle:

25.0 degrees

Curb Weight:

Approx. 3,400 - 3,600 lbs (1542 - 1633 kg)

Gross Vehicle Weight Rating:

Approx. 4,750 lbs (2154 kg)

🛡️ Safety Features

NHTSA Rollover Resistance:

4/5 Stars (for models with stability control, though not common in 2004)

ABS:

Optional Anti-lock Braking System (ABS)

Traction Control:

Limited slip differential (optional)

Airbags:

Driver and passenger front airbags

Seatbelts:

3-point front seatbelts with pretensioners, 3-point rear seatbelts

💡 Technology Features

Audio System:

Base AM/FM stereo with CD player, optional Infinity sound system with subwoofer.

Navigation:

Not available from factory.

Stability Control:

Rarely equipped in 2004 models, typically an aftermarket addition.

Bluetooth:

Not available from factory.

Power Features:

Optional power windows and power door locks.

🔧 Maintenance

Oil Change Interval:

Every 3,000 to 7,500 miles (5,000 to 12,000 km) or 6 months, depending on driving conditions and oil type used. Consult manual for specifics.

Tire Rotation Interval:

Every 6,000 to 7,500 miles (10,000 to 12,000 km)

Transmission Fluid Change Interval:

Manual: Every 60,000 miles (96,000 km). Automatic: Every 30,000-60,000 miles (48,000-96,000 km) depending on use. Consult manual.

Engine Oil Capacity:

4.0L: 6 US quarts (5.7 liters) with filter. 2.4L: 5 US quarts (4.7 liters) with filter.

Engine Oil Type:

SAE 10W-30 (preferred for 4.0L), SAE 5W-30 for extreme cold.

Coolant Type:

Mopar Antifreeze/Coolant (HOAT) 5 Year/100,000 Mile Formula or equivalent (Green)

Brake Fluid Type:

DOT 3

Common Wear Items:

Clutch wear (manual transmission), fuel pump, rear main seal leaks (4.0L), exhaust manifold cracks (4.0L), water pump, radiator, tie rod ends, ball joints, steering box wear.

Common Electrical Issues:

Window motor failures, HVAC blower motor resistors, O2 sensor failures.

Rust Prevention:

Regular undercarriage washes, rustproofing treatments (especially in areas with road salt), inspect drain holes for blockages.

📚 Vehicle History

Jeep Legacy:

Jeep has a storied history dating back to World War II, known for its go-anywhere, do-anything capability. The Wrangler is the direct descendant of the original Willys MB Jeep.

Tj Generation:

The TJ generation (1997-2006) marked a significant return to Jeep's roots by reintroducing solid front and rear axles, a departure from the CJ and earlier YJ generations' front coil springs. The 2004 model year saw minor updates, with the 42RLE automatic transmission replacing the aging 32RH.

Assembly Location:

Toledo, Ohio, USA

Production Period:

The TJ Wrangler was produced from 1997 to 2006.

🏆 Awards & Recognition

Off Road Accolades:

Consistently recognized as one of the most capable off-road vehicles available, often winning awards from off-road enthusiast publications and websites.

Long Term Value:

Strong residual values due to its iconic status and dedicated following.