Segment:
Compact to Mid-size SUV
Target Audience:
Off-road enthusiasts, families, general SUV buyers
Key Competitors:
Toyota 4Runner, Ford Bronco, Nissan Pathfinder, Chevrolet Blazer
Off Road Capability:
Renowned for its solid axles (XJ) and robust 4x4 systems (WJ), excellent ground clearance
Durability:
Known for its rugged construction and long-lasting mechanical components
Versatility:
Suitable for daily driving and demanding off-road excursions
Engine:
2.5L AMC I4, 4.0L AMC I6, 4.7L PowerTech V8, 2.7L CRD Diesel, 2.8L CRD Diesel
Transmission:
NV1500, NV3550 (Manual), AW4, 42RE, 45RFE, 545RFE, W5A580 (Automatic)
Drivetrain:
2WD, 4WD (Command-Trac, Selec-Trac, Quadra-Trac, Quadra-Drive)
Suspension:
Solid front axle (XJ), Independent front suspension (WJ)
Brakes:
Front discs, Rear drums/discs (depending on model/year)
Electrical:
Wiring diagrams, ECU, sensors, lighting, power accessories
Body And Chassis:
Frame, body panels, doors, interior trim, HVAC
Diagnostics:
Troubleshooting charts, DTC code definitions, diagnostic procedures
Maintenance:
Scheduled maintenance, oil changes, filter replacements, fluid checks
Repair:
Engine repair, transmission overhaul, brake system overhaul, suspension component replacement
Diagnostics:
Step-by-step diagnostic flowcharts for common issues
Troubleshooting:
Symptom-based troubleshooting guides
Technical Specifications:
Torque specifications, clearances, alignment data
Depth:
Complete overhaul procedures, component rebuilding, advanced diagnostics
Engine 1 Name:
AMC 4.0L Straight-6 (High Output)
Engine 1 Displacement:
3956 cc (242 cu in)
Engine 1 Bore X Stroke:
3.875 x 3.562 inches (98.4 x 90.5 mm)
Engine 1 Compression Ratio:
8.8:1 (typical)
Engine 1 Horsepower:
Approx. 180-190 hp @ 4500-4750 RPM (varies by year)
Engine 1 Torque:
Approx. 220-235 lb-ft @ 3250-4000 RPM (varies by year)
Engine 2 Name:
Chrysler 4.7L PowerTech V8 (WJ)
Engine 2 Displacement:
4701 cc (287 cu in)
Engine 2 Horsepower:
Approx. 235-265 hp @ 4750-5200 RPM (varies by year)
Engine 2 Torque:
Approx. 295-330 lb-ft @ 3250-3500 RPM (varies by year)
Fuel Induction:
Electronic Fuel Injection (EFI)
Fuel Type:
Unleaded Gasoline (Octane rating varies by engine)
Cooling System:
Pressurized liquid cooling system
Transmission 1 Type:
New Venture Gear NV3550 (5-speed Manual - XJ)
Transmission 2 Type:
Chrysler 42RE (4-speed Automatic - XJ)
Transmission 3 Type:
Chrysler 45RFE / 545RFE (4-speed/5-speed Automatic - WJ)
Transmission 4 Type:
Mercedes-Benz W5A580 (5-speed Automatic - WJ Diesel)
Transfer Case Types:
Command-Trac (231 J), Selec-Trac (242 J), Quadra-Trac I/II (NV247, NV242), Quadra-Drive (NV247 with ELSD)
Automatic Transmission Fluid Type:
ATF+4 (MS-9602) or equivalent for 42RE, 45RFE, 545RFE; ATF Dexron-III for earlier AW4
Manual Transmission Fluid Type:
API GL-3 or GL-4 SAE 75W-90 or 75W-85
Wheelbase Xj:
101.4 inches (2576 mm)
Wheelbase Wj:
116.0 inches (2946 mm)
Length Xj:
169.9 inches (4315 mm)
Length Wj:
183.7 inches (4666 mm)
Width Xj:
70.2 inches (1783 mm)
Width Wj:
74.7 inches (1897 mm)
Height Xj:
65.2 inches (1656 mm)
Height Wj:
64.4 inches (1636 mm)
Curb Weight Xj:
Approx. 3300-3600 lbs (1497-1633 kg)
Curb Weight Wj:
Approx. 4200-4600 lbs (1905-2087 kg)
Towing Capacity:
Varies by model, engine, and axle ratio (e.g., up to 5000-6500 lbs)
Wheel Bolt Pattern:
5x4.5 inches (XJ); 5x5 inches (WJ)
Typical Tire Size Xj:
P215/75R15, P225/75R15, P235/75R15
Typical Tire Size Wj:
P225/75R16, P235/70R16, P245/70R16, P235/65R17
NHTSA Ratings:
Varies by model year and testing protocols; typically rated fair to good in frontal and side impacts for later models.
ABS:
Standard on most later models (WJ), optional/standard on later XJs depending on trim and year.
Traction Control:
Available on later WJ models (e.g., with Quadra-Drive)
Airbags:
Driver and passenger airbags standard on most models from mid-1990s onwards. Later WJ models may have side airbags.
Seatbelts:
Front and rear seatbelts, with driver/passenger pre-tensioners on later models.
Body On Frame:
Robust body-on-frame construction contributing to durability and off-road resilience.
Xj Infotainment:
Basic AM/FM radio, cassette player, optional CD player, manual HVAC controls.
Wj Infotainment:
Optional premium audio systems (Infinity), CD player, AM/FM stereo, available navigation (later models), automatic climate control.
Cruise Control:
Available on most trims.
Power Accessories:
Power windows, power door locks, power mirrors available on higher trims.
Xj Connectivity:
Limited to basic antenna and speaker connections.
Wj Connectivity:
Limited; primarily analog connections, with some models potentially offering early satellite radio integration.
Oil Change Interval:
Every 3,000-5,000 miles or 6 months, whichever comes first (varies by engine and oil type).
Air Filter Replacement:
Every 15,000-30,000 miles or annually.
Spark Plug Replacement:
Every 30,000-100,000 miles depending on spark plug type (copper, platinum, iridium).
Coolant Flush:
Every 30,000-60,000 miles or 2-5 years.
Transmission Fluid Service:
Every 30,000-60,000 miles for automatics, often dependent on towing/severe use.
Engine Oil Xj 40:
API SN or SP, SAE 10W-30 or 10W-40 (check owner's manual for specific viscosity).
Engine Oil Wj 47:
API SN or SP, SAE 5W-30 (especially for V8).
Coolant:
Chrysler HOAT (Hybrid Organic Additive Technology) or equivalent, typically Mopar OAT or Pentofrost G12 equivalent.
Brake Fluid:
DOT 3 or DOT 4.
Xj Common Issues:
Head gasket failures (pre-2000 4.0L), cracked cylinder heads, rust (especially floor pans, rocker panels, unibody rails), worn sway bar bushings, death wobble (front end alignment/worn components).
Wj Common Issues:
Cooling fan clutch failure, water pump leaks, radiator issues, PIE (Plastic Intake Manifold End) failures on V8, transfer case chain stretch/failure, suspension component wear, power window regulator issues.
Jeep Legacy:
Built on Jeep's legendary off-road heritage, known for capability and ruggedness.
Xj Generation:
1984-2001; Revolutionized the SUV market with unibody construction, offering a balance of off-road prowess and on-road comfort.
Wj Generation:
1999-2004; Introduced independent front suspension for improved on-road handling, larger dimensions, and more powerful V8 engine options.
Manufacturing Locations:
Primarily Toledo, Ohio, USA.
Xj Key Changes:
Unibody design, introduction of 4.0L I6 engine, improved interior, updated styling.
Wj Key Changes:
IFS, longer wheelbase, 4.7L V8, improved aerodynamics, new interior, more advanced 4x4 systems.
Xj Recognition:
Widely praised for its off-road capability and durability, often cited as a benchmark for compact SUVs.
Wj Recognition:
Received accolades for its refinement, V8 power, and improved on-road manners compared to its predecessor.
Off Road Ratings:
Consistently rated highly by off-road publications for articulation, approach/departure angles, and 4x4 system performance.
