Engine Mechanical:
Complete engine overhaul, diagnostics, timing, cooling, lubrication systems
Engine Electrical:
Ignition system, fuel injection, emissions control, starter, alternator
Transmission:
Manual and automatic transmission disassembly, inspection, repair, and adjustment
Drivetrain:
Transfer case, front and rear axle assemblies, driveshafts, U-joints
Suspension:
Front and rear suspension components, coil springs, shock absorbers, control arms, steering knuckles
Steering:
Power steering system, steering gear, steering column, linkages
Brakes:
Hydraulic system, ABS, brake pads, rotors, calipers, parking brake
Body And Chassis:
Frame construction, body panels, doors, hoods, seats, interior trim
Electrical System:
Wiring diagrams, lighting, battery, charging system, starting system, accessories, fuses, relays
HVAC:
Heating, ventilation, and air conditioning system diagnosis and repair
Emissions:
Evaporative emission control system, catalytic converter, EGR system
Maintenance:
Oil changes, filter replacements, fluid checks and changes, spark plug replacement, belt inspection and replacement
Troubleshooting:
Diagnostic procedures for common and uncommon issues, fault code interpretation
Repair:
Component replacement, system overhauls, adjustments, and calibration
Diagnostics:
Step-by-step diagnostic guides for various systems
Component Replacement:
Detailed instructions for clutch replacement, radiator service, alternator/starter removal, fuel pump access, etc.
Depth:
Comprehensive: from basic owner maintenance to full engine and transmission rebuilds
Detail Level:
Detailed explanations, diagrams, torque specifications, and procedures
Troubleshooting Methodology:
Includes flowcharts and symptom-based diagnostic trees.
Engine Option 1:
4.0L Inline 6-Cylinder (1997cc)
Horsepower 1:
181 hp @ 4,600 rpm
Torque 1:
220 lb-ft @ 3,200 rpm
Horsepower 2:
119 hp @ 4,700 rpm
Torque 2:
145 lb-ft @ 3,500 rpm
Fuel Delivery 1:
Sequential Multi-Port Fuel Injection (MPI)
Fuel Type 1:
Unleaded Gasoline (87 octane minimum recommended)
Fuel Delivery 2:
Multi-Point Fuel Injection (MPI)
Fuel Type 2:
Unleaded Gasoline (87 octane minimum recommended)
Engine Option 2:
2.5L Inline 4-Cylinder (2507cc)
Engine Oil Capacity Note:
Always verify oil capacity with owner's manual or dipstick, as variations may occur.
Engine Block Material:
Cast Iron (both 4.0L and 2.5L)
Transmission Option 1:
NV3550 5-Speed Manual Transmission
Transmission Option 2:
42RLE 4-Speed Automatic Transmission
Transfer Case:
NV231 Command-Trac (2WD High, N, 4WD High, 4WD Low)
Manual Fluid Spec:
NV3550: Mopar Manual Transmission Lubricant (or equivalent API GL-3/GL-4 rated gear oil, 75W-90)
Automatic Fluid Spec:
42RLE: ATF+4 (MS-9602)
Clutch Type:
Dry single plate (for manual transmission models)
Wheelbase:
93.4 inches (2372 mm)
Length:
151.4 inches (3845 mm)
Width:
66.5 inches (1689 mm)
Height:
73.1 inches (1857 mm) (with hardtop)
Curb Weight 4.0L:
Approx. 3,400 - 3,600 lbs (1542 - 1633 kg)
Curb Weight 2.5L:
Approx. 3,200 - 3,400 lbs (1451 - 1542 kg)
Gross Vehicle Weight Rating:
Approx. 4,700 - 4,900 lbs (2132 - 2223 kg) (Varies by configuration)
NHTSA Driver Front Impact:
4 Stars (as rated for similar models/years)
NHTSA Passenger Front Impact:
4 Stars (as rated for similar models/years)
Active Safety:
Four-wheel disc brakes (standard on most models), ABS (optional)
Passive Safety:
Front airbags, Roll bar structure
Seatbelts:
Three-point front seat belts, lap belts for rear passengers
Oil Change Interval:
Every 3,000-5,000 miles or 6 months, whichever comes first (depending on driving conditions)
Engine Air Filter Replacement:
Every 15,000-30,000 miles or as needed based on inspection
Spark Plug Replacement 4.0L:
Approx. 100,000 miles (Long Life Platinum Spark Plugs)
Transmission Fluid Change Auto:
Every 30,000-60,000 miles (ATF+4)
Engine Oil 4.0L:
API-SP or SN, SAE 10W-30 (check owner's manual for exact specs, 5.7 quarts capacity)
Engine Oil 2.5L:
API-SP or SN, SAE 10W-30 (check owner's manual for exact specs, 5.0 quarts capacity)
Coolant:
Mopar Antifreeze/Coolant HOAT (50/50 mix with distilled water)
Common Issue 1:
Cracking of exhaust manifold on 4.0L engine
Common Issue 2:
Leaking valve cover gasket
Common Issue 3:
Loose or failing steering box
Common Issue 4:
Water pump failure
