Segment:
Compact SUV, off-road focused, iconic 4x4.
Competitors:
Ford Bronco (older generations), Toyota 4Runner, Land Rover Defender (older generations).
Design:
Body-on-frame construction, solid front and rear axles, removable doors and roof, high ground clearance.
Capability:
Renowned off-road capability, selectable 4WD systems (Command-Trac and optional Selec-Trac).
Engine:
Detailed diagnostics, repair, and overhaul for 4.0L (12-valve OHV I6, Power-Tech HO) and 2.4L (16-valve DOHC I4) engines.
Transmission:
Repair and overhaul for NV3550 5-speed manual transmission and 42RLE 4-speed automatic transmission.
Drivetrain:
Service procedures for Dana 30 front axle, Dana 44 rear axle, NV231/NV241 transfer cases, and 4WD system operation.
Suspension:
Front and rear suspension components, including coil springs, shock absorbers, control arms, sway bars, and steering linkage.
Brakes:
Front disc and rear drum brake systems, ABS diagnostics and repair (if equipped), hydraulic system components.
Electrical:
Complete wiring diagrams, fuse box layouts, diagnostic procedures for charging system, starting system, lighting, instrument cluster, and power accessories.
HVAC:
Air conditioning system, heater, ventilation, climate control diagnostics and repair.
Body:
Exterior panel removal/installation, interior trim, doors, windows, windshield replacement, convertible top service.
Fuel System:
Fuel pump, fuel injectors, fuel filter replacement, EVAP system diagnostics.
Cooling System:
Radiator, water pump, thermostat, cooling fan, coolant specifications and procedures.
Steering:
Power steering system, steering gear, steering column, linkages, and wheel alignment specifications.
Emissions Control:
EVAP system components, catalytic converter, O2 sensors, and emission control system troubleshooting.
Maintenance:
Scheduled maintenance intervals, fluid changes (oil, coolant, brake fluid, transmission fluid, axle fluid), filter replacements.
Engine Repair:
Engine tune-up, cylinder head removal/installation, piston and connecting rod service, crankshaft and bearing service, timing chain replacement.
Transmission Repair:
Clutch replacement, transmission fluid and filter service, internal transmission component repair and overhaul.
Brake Repair:
Brake pad and rotor replacement, brake caliper service, wheel cylinder replacement, brake bleeding procedures.
Electrical Diagnostics:
Troubleshooting common electrical faults, using diagnostic tools, testing sensors and actuators.
Steering Suspension Repair:
Tie rod end replacement, ball joint replacement, shock absorber installation, power steering system service.
Troubleshooting:
Extensive diagnostic flowcharts and symptom-based troubleshooting guides for all major vehicle systems.
Body Repair:
Panel alignment, corrosion repair guidance, door lock and window regulator service, convertible top mechanism and fabric care.
Depth:
Full spectrum from basic maintenance to complete engine and transmission rebuilds, including detailed diagnostic trees and component testing.
Oil Change:
Every 3,000 miles (4,800 km) or 3 months, whichever comes first. Use synthetic blend or full synthetic for extended intervals.
Tire Rotation:
Every 5,000-7,500 miles (8,000-12,000 km).
Transmission Fluid Change:
Manual: Every 30,000-50,000 miles (48,000-80,000 km). Automatic: Every 30,000 miles (48,000 km) or as per severe duty schedule.
Engine Oil:
SAE 10W-30 (4.0L), SAE 5W-30 (2.4L). Meets Chrysler MS-6395.
Coolant:
Chrysler OAT (Organic Additive Technology) HOAT or equivalent (typically Mopar OAT or Dex-Cool compatible).
Transmission Fluid Manual:
Mopar Manual Transmission Lubricant (or equivalent GL-3 rated)
Transmission Fluid Automatic:
Mopar ATF+4 (or equivalent MS-9602 specification)
Axle Fluid:
SAE 75W-90 Synthetic gear lubricant. Consider limited-slip additive if equipped with Trac-Lok. Meets API GL-5.
Brake Fluid:
DOT 3 (or DOT 4 if specified for ABS systems).
Common Problems 1:
Rear main seal leaks (especially on 4.0L), clutch wear, exhaust manifold cracks (4.0L), death wobble (due to worn steering/suspension components).
Common Problems 2:
Actuator failure for 4WD system (if equipped with Selec-Trac), heater core leaks, transfer case seal leaks.
