🏷️ Basic Information

Make:

Jeep

Model:

Wrangler

Year:

2008

Chassis Code:

JK

👋 Introduction

Segment:

Compact SUV / Off-Road Vehicle

Reputation:

Iconic off-road capability, ruggedness, and go-anywhere attitude.

Key Competitors:

Toyota FJ Cruiser, Nissan Xterra, Hummer H3

Design:

Body-on-frame construction, removable doors and roof, solid axles (front and rear), high ground clearance, short overhangs.

Capability:

Legendary off-road prowess, available four-wheel drive systems (Command-Trac NV241G, Selec-Trac NV241OR) with low-range gearing, available locking differentials.

📋 Manual Details

Engine Coverage:

3.8L V6 (202 cu in)

Transmission Coverage:

4-speed automatic (42RLE), 6-speed manual (NSG370)

Drivetrain Coverage:

2WD and 4WD (Command-Trac, Selec-Trac)

Body Style Coverage:

2-door (JK) and 4-door (JKU - Unlimited)

Estimated Page Count:

1500-2000+ (Estimate based on typical workshop manuals of this era and scope)

Type:

Service and Repair Workshop Manual

Language:

English

Format:

Digital (PDF)

📖 Manual Coverage

Powertrain:

Engine mechanical, lubrication, cooling, fuel, ignition, exhaust, emissions, engine control system (ECM), transmission (manual & automatic), transfer case, drive shafts, axles, differentials

Chassis:

Steering system, suspension system (front & rear), brake system (front & rear disc), ABS, wheel bearings, tires, wheels

Electrical:

Battery, charging system, starting system, lighting system (headlights, taillights, interior), instrumentation, gauges, body control module (BCM), power windows, power locks, mirrors, wipers, horn, fuse box locations and functions, wiring diagrams, OBD-II diagnostics

Body:

Exterior body panels, doors, hood, tailgate, bumpers, seats, interior trim, HVAC system (heating, ventilation, air conditioning), glass, seals

Maintenance:

Scheduled maintenance, oil changes, filter replacements, fluid checks and top-offs, tire rotation, brake pad inspection, battery service

Repair:

Engine overhaul, transmission rebuilds, brake component replacement, suspension repair, electrical component troubleshooting and replacement, body panel repair, HVAC system service

Diagnostics:

Troubleshooting charts, symptom-based diagnostics, diagnostic trouble codes (DTCs) interpretation, sensor testing, actuator testing

Special Tools:

Identification and usage of specialized tools required for specific repairs

Depth:

Comprehensive, covering from basic preventive maintenance to complete engine and transmission rebuilds. Includes detailed diagnostic procedures and specifications for professional mechanics.

📊 Manual Specifications

File Type:

PDF

Searchability:

Searchable text content for quick access to information

Print Quality:

High-resolution images, diagrams, and text for clear printing

Binding:

N/A (Digital Format)

Paper:

N/A (Digital Format)

⚙️ Engine Specifications

Engine Code:

EHB

Displacement:

3.8 Liters (230.5 cu in)

Configuration:

V6 (90-degree)

Block Material:

Aluminum Alloy

Cylinder Head Material:

Aluminum Alloy

Bore X Stroke:

96.0 mm x 81.0 mm (3.78 in x 3.19 in)

Horsepower:

202 hp @ 5200 rpm

Torque:

237 lb-ft @ 4000 rpm

Injection Type:

Sequential Electronic Multi-Port Fuel Injection (MPFI)

Fuel Type:

Unleaded Regular Gasoline

Recommended Octane:

87 Octane

ECM Type:

Chrysler NGC (Next Generation Controller)

🔧 Transmission

Type:

6-speed Manual (NSG370)

Type:

4-speed Automatic (42RLE)

Clutch Type:

Hydraulic Dry Single Plate Clutch

Transfer Case Manual:

NV241G (Command-Trac) or NV241OR (Selec-Trac)

Transfer Case Automatic:

NV241G (Command-Trac) or NV241OR (Selec-Trac)

Fluid Type:

Mopar Manual Transmission Lubricant (MS-9224) or equivalent SAE 75W-90 synthetic gear oil

Fluid Type:

Chrysler ATF+4 (MS-9602)

Capacity:

Approx. 2.1 Liters (2.2 Quarts)

Capacity:

Approx. 8.0 Liters (8.5 Quarts) (Total Fill)

📐 Dimensions

Wheelbase 2 Door:

95.4 inches (2423 mm)

Wheelbase 4 Door Unlimited:

116.0 inches (2946 mm)

Length 2 Door:

169.2 inches (4300 mm)

Length 4 Door Unlimited:

183.4 inches (4660 mm)

Width Without Doors:

73.7 inches (1872 mm)

Height:

72.4 inches (1839 mm)

Ground Clearance:

10.5 inches (267 mm)

Curb Weight 2 Door:

Approx. 4,000 - 4,200 lbs (1814 - 1905 kg)

Curb Weight 4 Door Unlimited:

Approx. 4,200 - 4,500 lbs (1905 - 2041 kg)

Gross Vehicle Weight Rating Gvwr:

Approx. 5,500 lbs (2495 kg)

Cargo Volume 2 Door:

Approx. 12.4 cu ft (behind rear seat)

Cargo Volume 4 Door Unlimited:

Approx. 31.5 cu ft (behind rear seat)

🛡️ Safety Features

NHTSA Frontal Crash Test Driver 2 Door:

4 Stars

NHTSA Frontal Crash Test Passenger 2 Door:

4 Stars

NHTSA Side Impact Front Seat 2 Door:

5 Stars

NHTSA Side Impact Rear Seat 2 Door:

4 Stars

NHTSA Rollover Resistance 2 Door:

4 Stars (70% chance)

ABS:

Standard 4-wheel disc anti-lock braking system (ABS)

Traction Control:

Electronic Stability Control (ESC) and Traction Control System (TCS) standard on all models

Hill Start Assist:

Not available for 2008 model year

Airbags:

Front advanced multi-stage airbags, optional front-seat side-impact airbags

Seatbelts:

3-point seat belts with pretensioners

Rollover Protection:

Integrated roll bar, reinforced windshield frame, front and rear sport bars

💡 Technology Features

Audio System:

Available AM/FM stereo with CD player, MP3 capability, SiriusXM Satellite Radio readiness, and auxiliary audio input jack. Upgraded Infinity speaker systems were optional.

Navigation:

Optional Uconnect Navigation system with a 6.5-inch touchscreen, DVD audio/video, and iPod connectivity available on higher trim levels.

Cruise Control:

Standard on most models

Tire Pressure Monitoring System:

Standard

Uconnect:

Optional Uconnect Bluetooth hands-free communication system and voice command features were available.

🔧 Maintenance

Oil Change Interval:

Every 5,000 miles (8,000 km) or 6 months, whichever comes first (under normal driving conditions)

Tire Rotation Interval:

Every 5,000 miles (8,000 km)

Cabin Air Filter Replacement:

Every 15,000 miles (24,000 km) or 12 months

Engine Air Filter Replacement:

Every 15,000 miles (24,000 km) or 12 months

Coolant Flush Interval:

Every 100,000 miles (160,000 km) or 5 years, whichever comes first

Engine Oil Type:

SAE 5W-30 Synthetic Motor Oil meeting Chrysler MS-6395

Engine Oil Capacity:

5.0 Quarts (4.7 Liters) with filter change

Coolant Type:

Mopar OAT (Organic Additive Technology) Antifreeze/Coolant (MS-9690) or equivalent (Orange)

Brake Fluid Type:

DOT 3

Power Steering Fluid Type:

Chrysler Power Steering Fluid (MS-5901)

Engine Oil Consumption:

Some 3.8L V6 engines may exhibit higher than expected oil consumption, particularly if driven aggressively or under heavy load. Regular monitoring is advised.

Clutch Throwout Bearing:

Early JK models, particularly with manual transmissions, could experience premature failure of the clutch throwout bearing, often manifesting as a whining or chirping noise.

Wiper Motor Failure:

Reports of wiper motor failures in some JK models, potentially due to water ingress or electrical faults.

Track Bar Bushings:

Wear in track bar bushings can lead to wandering or steering looseness, especially over rough terrain or at highway speeds.

📚 Vehicle History

Heritage:

Jeep's lineage traces back to World War II Willys MB, renowned for its off-road capability and ruggedness.

Generation:

The 2008 model year marks the introduction of the JK generation, a complete redesign of the Wrangler.

Key Changes Jk Vs Tj:

New platform (body-on-frame), significantly improved on-road manners, increased interior space, availability of a 4-door model (Unlimited), new 3.8L V6 engine, revised suspension geometry.

Manufacturing Location:

Toledo, Ohio, USA

Production Start Jk Generation:

2006 (for the 2007 model year)

🏆 Awards & Recognition

Off Road Awards:

Consistently recognized by off-road publications and enthusiasts for its unparalleled trail capability. Often named '4x4 of the Year' by various automotive media.

Consumer Reports Reliability:

Reliability ratings varied by model year and specific components, but generally, the JK generation was considered an improvement over previous generations. The manual indicates how to maintain and repair to ensure longevity.