Vehicle Segment:
Compact SUV / Off-Road Vehicle
Key Competitors Era:
Toyota 4Runner, Nissan Pathfinder, Ford Bronco (prior generation), Chevrolet Blazer
Defining Characteristics:
Iconic off-road capability, rugged design, open-air driving experience (convertible options), solid front axle (early TJ models), removable doors and roof
Engine Mechanical:
Engine assembly, disassembly, overhaul, lubrication, cooling system, fuel system, exhaust system, ignition system
Engine Control:
Engine control modules (ECM), sensors, actuators, diagnostic procedures
Transmission:
Manual and automatic transmission service, clutch, driveline, transfer case
Suspension Steering:
Front and rear suspension components, steering system, alignment specifications
Brakes:
Brake system components, hydraulic system, ABS (if equipped), brake fluid specifications, bleeding procedures
Electrical:
Wiring diagrams, charging system, starting system, lighting, accessories, body control modules (BCM), fuses and relays
Body Chassis:
Frame, body panels, doors, windows, interior trim, exterior trim, convertible top (if applicable)
HVAC:
Heating, ventilation, and air conditioning system service and repair
Diagnostics Troubleshooting:
Diagnostic trouble codes (DTCs), symptom-based troubleshooting guides, diagnostic procedures
Preventative Maintenance:
Scheduled maintenance, fluid changes, filter replacements, inspection points
Repair Procedures:
Step-by-step instructions for component replacement and repair
Overhaul Rebuild:
Detailed instructions for engine, transmission, and component rebuilding
Diagnostic Techniques:
Methods for identifying and rectifying vehicle faults
Torque Specifications:
Precise torque values for all critical fasteners
Depth Of Coverage:
Comprehensive, covering all aspects from basic maintenance to complete engine and transmission rebuilds
File Type:
Digital Download (PDF)
Printability:
High-resolution, optimized for clear printing of all pages
Binding For Printed Copy:
Not applicable (downloadable format)
Paper Type For Printed Copy:
Not applicable (downloadable format)
Engine Code:
4.0L Inline-6 (OHV)
Engine Displacement:
3952 cc (241 cubic inches)
Engine Configuration:
Inline 6-cylinder
Bore X Stroke:
3.88 x 3.57 inches (98.5 x 90.6 mm)
Valve Train:
Overhead Valve (OHV), 12 valves
Horsepower Estimated:
182 hp @ 4600 rpm
Torque Estimated:
220 lb-ft @ 3000 rpm
Fuel Delivery:
Electronic Fuel Injection (EFI) - Multi-point Sequential Injection
Fuel Type:
Unleaded gasoline
Recommended Octane:
87 AKI
Cooling Type:
Liquid-cooled
Oil Capacity:
6.0 US quarts (5.7 Liters) with filter
Recommended Oil Viscosity:
SAE 10W-30 (API SJ or higher)
Transmission Type Std:
NV3550 5-speed Manual Transmission
Transmission Type Opt:
42RLE 4-speed Automatic Transmission
Transfer Case:
NV231 Command-Trac (2WD High, 4WD High, Neutral, 4WD Low)
Automatic Transmission Fluid:
ATF+4 (MS-9602)
Manual Transmission Fluid:
Mopar Manual Transmission Lubricant (or equivalent API GL-3/GL-4)
Wheelbase:
93.4 inches (2372 mm)
Length:
151.4 inches (3845 mm) (2-door model)
Width:
66.5 inches (1689 mm)
Height:
71.5 inches (1816 mm) (soft top)
Ground Clearance:
Approx. 8.5 inches (216 mm)
Curb Weight Approx:
3500-3800 lbs (1588-1724 kg) depending on configuration
Gross Vehicle Weight Rating:
4700-4900 lbs (2132-2223 kg)
NHTSA Frontal Impact Driver:
4-star (model year dependent, check specific vehicle records)
NHTSA Frontal Impact Passenger:
4-star (model year dependent, check specific vehicle records)
ABS:
Available (optional on some models, standard on others for these years)
Airbags:
Driver and Passenger Frontal Airbags
Seat Belts:
Three-point front and rear seat belts
Infotainment System Era:
Basic analog gauges, AM/FM radio, CD player (optional), cassette player (optional)
Driver Assistance Features:
Limited; ABS available on select models. Primarily focused on mechanical robustness rather than electronic driver aids.
Connectivity Options:
Not applicable for this era; no integrated Bluetooth or smartphone connectivity
Oil Change Interval:
Every 5,000 miles (8,000 km) or 6 months, whichever comes first (using synthetic or synthetic blend oil is often recommended for heavier use)
Air Filter Replacement:
Every 15,000 miles (24,000 km) or annually
Spark Plug Replacement:
Approx. 100,000 miles (160,000 km) (with high-quality spark plugs)
Coolant Flush:
Every 30,000 miles (48,000 km) or 2 years
Engine Coolant Type:
Mopar Antifreeze/Coolant (MS-7170) or equivalent HOAT (Hybrid Organic Acid Technology) coolant, typically a 50/50 mix with distilled water
Power Steering Fluid:
ATF+4 (MS-9602) or Mopar Power Steering Fluid
Common Wear Items:
Clutch wear (manual), universal joints (driveshafts), sway bar links, brake components, exhaust system corrosion, heater core leaks, oil filter adapter leaks (oil filter housing gasket)
Engine Specific Issues:
Oil filter housing gasket leaks, occasional head gasket concerns (though less common than earlier Jeep engines), CPS (Crankshaft Position Sensor) failure
Jeep Legacy:
Longstanding heritage in military vehicles and off-road capability dating back to WWII
Tj Introduction:
Introduced for the 1997 model year, replacing the YJ generation. The TJ featured a significant upgrade to coil springs for all four wheels, a major departure from the YJ's leaf springs, enhancing ride comfort and articulation.
Tj Differences From Yj:
Coil spring suspension, round headlights (returning from CJ era), improved interior and safety features.
Production Period Tj:
1997-2006
Manufacturing Location:
Toledo Complex, Toledo, Ohio, USA
