Segment:
Compact Sport Utility Vehicle (SUV), Off-Road Focused
Competitors:
Suzuki Samurai (older models), Toyota FJ Cruiser (later), Ford Bronco (later), Land Rover Defender (higher end)
Features:
Solid front and rear axles, removable doors, removable roof (soft top or hardtop), iconic Jeep styling, robust off-road capability.
Brand Legacy:
Direct descendant of the original WWII Willys Jeep, emphasizing ruggedness and go-anywhere capability.
Generation Code:
TJ (1997-2006), known for significant improvements over YJ, including coil springs.
Assembly Location:
Toledo, Ohio, USA
Engine:
Detailed diagnostics, overhaul procedures, component testing for 4.0L inline 6-cylinder (PowerTech) and 2.4L 4-cylinder (optional, less common in 2006).
Transmission:
Manual (NV3550, NV1500) and Automatic (42RLE) transmission repair, fluid specifications, clutch service, driveline components.
Drivetrain:
Transfer case (NV241J), axle assemblies (Dana 30 front, Dana 35/44 rear), differentials, U-joints, CV joints, 4WD system engagement and repair.
Brakes:
Front disc, rear drum (standard) or disc (optional on Rubicon), ABS system diagnostics, caliper and rotor replacement, parking brake service.
Suspension:
Front solid axle, rear solid axle, coil springs, shock absorbers, control arms, sway bar links, steering stabilizer.
Steering:
Power steering system, steering gear, tie rod ends, drag link, steering column, alignment specifications.
Electrical:
Wiring diagrams, starter, alternator, battery, lighting systems, instrument cluster, power windows, power locks, ignition system, ECM/PCM troubleshooting.
Cooling System:
Radiator, water pump, thermostat, coolant specifications, fan clutch, heater core.
Fuel System:
Fuel pump, fuel filter, fuel injectors, fuel pressure testing, EVAP system diagnostics.
Exhaust System:
Catalytic converter, mufflers, pipes, oxygen sensors, emissions control.
HVAC:
Air conditioning system, refrigerant types, compressor, evaporator, heater, blower motor, climate control diagnostics.
Body:
Body panel removal and installation, door mechanisms, interior trim, convertible top service, hardtop service.
Body Control:
Power mirrors, power windows, door locks, interior lighting, wiper/washer system.
Maintenance:
Oil changes, filter replacements, spark plug service, fluid checks and changes, brake pad replacement, tire rotation.
Troubleshooting:
Diagnostic trouble codes (DTCs), symptom-based troubleshooting guides, electrical diagnostic flowcharts.
Repair:
Engine rebuilds, transmission overhauls, suspension component replacement, brake caliper rebuilds, electrical component repair.
Installation:
Accessory installation guidelines, component replacement procedures.
Body Control Modules:
Information on interior/exterior body component repair, door mechanisms, seat adjustments, and convertible top/hardtop systems.
Depth:
Factory-level diagnostics, detailed specifications, torque values, wiring diagrams, component testing procedures, overhaul instructions.
Diagnostic Tools:
References to common diagnostic tools like the DRB III (Chrysler's proprietary scanner) for detailed PCM/ECM diagnostics and actuator tests.
Oil Change Interval:
Every 3,000 miles or 3 months, whichever comes first (severe duty: 2,000 miles).
Transmission Fluid Change Interval Auto:
Every 60,000 miles or 48 months (ATF+4).
Transmission Fluid Change Interval Manual:
Every 60,000 miles or 48 months (gear oil).
Transfer Case Fluid Change Interval:
Every 60,000 miles or 48 months.
Coolant Flush Interval:
Every 30,000 miles or 24 months (Mopar OAT).
Spark Plug Replacement:
Approximately 100,000 miles (Long Life Platinum/Iridium plugs).
Engine Oil Type:
API SN or SP, SAE 10W-30 Synthetic Blend or Full Synthetic
Engine Oil Capacity:
6 Quarts (5.7 Liters) with filter
Coolant Type:
Mopar Antifreeze/Coolant OAT (Orange) 5-Year/100,000 Mile Formula
Common Problems:
Oil filter adapter housing leaks (seals), rear main seal leaks, death wobble (front end alignment/components), AC evaporator core leaks, exhaust manifold cracks (4.0L), transmission synchro issues (manual).