🏷️ Basic Information

Make:

Jeep

Model:

Liberty

Year Range:

2004-2007

Engine Options:

3.7L V6 PowerTech, 2.8L CRD (Common Rail Diesel)

Chassis Code:

KJ

👋 Introduction

Segment:

Compact SUV / Sport Utility Vehicle

Target Audience:

Enthusiasts, DIY mechanics, professional repair shops, fleet maintenance.

Competitors:

Toyota RAV4, Honda CR-V, Ford Escape, Nissan Xterra, Chevrolet Tracker.

Value Proposition:

Provides factory-level diagnostic and repair information for critical vehicle systems, enabling accurate and efficient maintenance.

Unique Selling Point:

Comprehensive coverage for both gasoline (3.7L) and diesel (2.8L CRD) variants, addressing specific needs of different Liberty owners.

📋 Manual Details

Coverage:

Comprehensive factory service and repair

Estimated Page Count:

Extensive (typically over 1500 pages for full factory manuals)

Type:

Factory Service Manual (FSM) / Workshop Manual

Language:

English

Format:

Digital Download (PDF or similar, compatible with computer, tablet, smartphone)

📖 Manual Coverage

Engine Mechanical:

Engine assembly, disassembly, inspection, repair, cylinder heads, pistons, connecting rods, crankshaft, camshafts, timing systems, lubrication, cooling systems.

Engine Performance:

Fuel delivery, ignition system, emissions control, turbocharger (for 2.8L CRD), diesel injection (for 2.8L CRD).

Transmission:

Automatic transmission (e.g., 45RFE, 42RLE) and manual transmission (e.g., NV1500, NV3550) service, overhaul, diagnostics, fluid specifications.

Drivetrain:

Four-wheel drive (4WD) systems (e.g., Command-Trac, Selec-Trac), transfer cases, drive shafts, axles, differentials, CV joints, wheel bearings.

Suspension:

Front and rear suspension components, steering knuckles, control arms, coil springs, shock absorbers/struts, stabilizer bars, service and alignment.

Brakes:

Front and rear brake systems (disc/drum configurations), ABS, parking brake, hydraulic lines, calipers, rotors, pads, bleeding procedures.

Steering:

Power steering system, steering gear/rack and pinion, steering column, linkages, pumps, fluid specifications, troubleshooting.

Electrical:

Battery, charging system (alternator, starter), lighting, ignition switch, body control modules (BCM), power windows, door locks, mirrors, wipers, horn.

HVAC:

Heating, ventilation, and air conditioning (HVAC) system components, refrigerant handling, compressor, evaporator, condenser, blower motor, controls.

Body:

Body panels, doors, hinges, latches, glass, seals, interior trim, bumpers, exterior moldings, chassis lubrication points.

Chassis Electrical:

Instrument cluster, gauges, warning lights, diagnostic connectors (OBD-II), sensors, actuators.

Maintenance:

Scheduled maintenance (oil changes, filter replacements, spark plugs, fluid checks), lubrication, tire rotation, brake inspection.

Troubleshooting:

Diagnostic flowcharts, symptom-based troubleshooting, common problems and solutions, wiring diagrams for electrical systems.

Repair:

Step-by-step repair instructions for all major components and systems, including engine rebuilds, transmission overhauls, suspension work, brake replacement.

Diagnostics:

Detailed diagnostic procedures for engine, transmission, ABS, airbag, and other electronic systems using scan tools and specific test procedures.

Specifications:

Torque specifications, clearances, fluid capacities, pressures, electrical component resistance and voltage tests.

Depth:

Complete rebuild procedures, advanced diagnostics, detailed component analysis, OE-level repair information.

📊 Manual Specifications

Digital Format:

PDF (Searchable, bookmarkable)

Printability:

High-resolution images and diagrams, printable pages

Binding:

N/A (Digital Download)

Paper Quality:

N/A (Digital Download)

⚙️ Engine Specifications

3.7L V6:

3.7L V6 PowerTech, SOHC, Cast Iron Block, Aluminum Heads, Sequential Multi-Port Fuel Injection (MPI). Displacement: 3701 cc (225.9 cu in). Bore x Stroke: 93 mm x 90.9 mm.

2.8L Crd:

2.8L (2768 cc) VM Motori R428 DOHC Inline 4-cylinder Turbo Diesel with Common Rail Direct Injection (CRDi). Cast Iron Block, Aluminum Head. Turbocharged with Intercooler.

3.7L V6 Horsepower:

Approximately 210-215 hp @ 5200-5500 rpm (varies slightly by model year)

3.7L V6 Torque:

Approximately 235-240 lb-ft @ 4000 rpm (varies slightly by model year)

2.8L Crd Horsepower:

Approximately 160-177 hp @ 3800 rpm (varies by model year and tuning)

2.8L Crd Torque:

Approximately 295-335 lb-ft @ 1800-2000 rpm (varies by model year and tuning)

3.7L V6:

Electronic Fuel Injection (EFI) with Sequential MPI. Fuel Type: Unleaded Gasoline.

2.8L Crd:

High-Pressure Common Rail Direct Injection (CRDi). Fuel Type: Diesel (ULSD recommended).

Ignition System:

Distributorless Ignition System (DIS) with Coil-on-Plug (COP) for 3.7L. Glow Plugs for 2.8L CRD cold starts.

🔧 Transmission

Automatic:

4-speed Automatic: 45RFE / 42RLE (RWD or 4WD configurations).

Manual:

5-speed Manual: NV1500 (RWD) or NV3550 (4WD).

4Wd System:

Selec-Trac NV242 transfer case (Full-time 4WD) or Command-Trac NV241G (Part-time 4WD) depending on configuration.

Automatic Transmission Fluid:

ATF+4 (Mopar material number 05013457AA or equivalent).

Manual Transmission Fluid:

Refer to manual for specific type (e.g., SAE 75W-90 synthetic gear oil).

📐 Dimensions

Wheelbase:

Approx. 104.4 inches (2652 mm)

Length:

Approx. 174.4 inches (4430 mm)

Width:

Approx. 72.4 inches (1839 mm)

Height:

Approx. 67.5 inches (1715 mm)

Curb Weight:

Varies by configuration, approximately 3700-4100 lbs (1678-1860 kg)

Towing Capacity:

Up to 3500 lbs (1588 kg) when properly equipped.

🛡️ Safety Features

NHTSA Frontal Crash:

Driver: 4 Stars, Passenger: 4 Stars (2004 models tested)

NHTSA Side Impact:

Front Seat: 4 Stars, Rear Seat: 5 Stars (2004 models tested)

ABS:

Standard Anti-lock Braking System (ABS)

Traction Control:

Available Traction Control System (TCS) and Electronic Stability Control (ESC) on some models/years.

Airbags:

Standard front airbags. Available side curtain airbags on select models.

Seatbelts:

Three-point seat belts with pretensioners.

💡 Technology Features

Audio System:

Factory radio with AM/FM, CD player, and optional Infinity premium sound system. AUX input became more common later in the generation.

Navigation:

Optional factory navigation system available on higher trims.

Cruise Control:

Standard cruise control system.

Bluetooth:

Rarely factory-equipped, typically aftermarket additions.

ECU:

Engine Control Unit (ECU) or Powertrain Control Module (PCM) managing engine and transmission functions. Diesels utilize a sophisticated ECM.

🔧 Maintenance

Oil Change:

Every 5,000-7,500 miles (8,000-12,000 km) or 6 months, whichever comes first (refer to manual for exact interval based on driving conditions).

Engine Air Filter:

Inspect every 15,000 miles (24,000 km), replace as needed or every 30,000 miles (48,000 km).

Spark Plugs:

3.7L V6: Platinum plugs typically rated for 100,000 miles (160,000 km). Check manual for specific replacement interval.

Cabin Air Filter:

Replace every 15,000-20,000 miles (24,000-32,000 km) or annually.

Engine Oil 3.7L:

SAE 5W-30 (API Certified) for most conditions. Capacity: Approx. 6 quarts (5.7 liters) with filter.

Engine Oil 2.8L Crd:

API CJ-4 or CK-4 certified synthetic diesel engine oil, SAE 5W-40 recommended. Capacity: Approx. 6.7 quarts (6.3 liters) with filter.

Coolant:

Mopar OAT (Organic Additive Technology) Antifreeze/Coolant, HOAT or equivalent (e.g., Zerex G-05). 50/50 mix with distilled water. Capacity: Approx. 11.1 quarts (10.5 liters).

Brake Fluid:

DOT 3 or DOT 4 brake fluid.

Common Problems 3.7L:

Oil filter housing leaks, intake manifold gasket leaks, catalytic converter issues, ignition coil failures, and water pump leaks can occur.

Common Problems 2.8L Crd:

Injector seal leaks (common on early models), EGR valve clogging, glow plug issues, turbocharger problems, and DPF (Diesel Particulate Filter) regeneration issues (if equipped). Fuel filter maintenance is critical.

Common Issues All:

Transfer case actuator failure, wheel bearing wear, front suspension component wear (ball joints, tie rod ends), and HVAC blower motor failures.

📚 Vehicle History

Jeep Legacy:

Jeep, a brand synonymous with off-road capability and ruggedness, has a long history of producing versatile SUVs.

Kj Generation:

The KJ Liberty (2002-2007) replaced the Cherokee (XJ) in North America and represented a shift towards a more unibody construction, though it retained significant off-road prowess. It featured a distinct, rounded styling compared to its predecessor.

Manufacturing Location:

Toledo, Ohio, USA.

Production Years:

2002-2007

🏆 Awards & Recognition

Off Road Capability:

Jeep Liberty models, particularly those with 4WD, were generally recognized for their above-average off-road capability within the compact SUV segment.

Consumer Reports:

Consumer Reports ratings varied for the Liberty during these years, with some model years receiving average or below-average reliability scores, often citing powertrain and electrical issues.