Powertrain:
Engine mechanical (4.0L I6, 2.5L I4), Fuel system, Ignition system, Cooling system, Lubrication system, Exhaust system, Emission Control Systems, Manual Transaxle (NV3550, AX-15), Automatic Transaxle (AW4, 42RE), Transfer Case (NP231, NP242), Clutch System, Torque Converter Clutch
Chassis:
Front Suspension System, Rear Suspension System, Steering System, Brake System, Parking Brake, Wheel And Tire System, Drive Shafts (Front & Rear), Rear Axle Beam, Front & Rear Axle Hubs, Front Stabilizer Bar, Rear Coil Spring, Front Shock Absorber, Rear Shock Absorber Assy
Electrical:
Charging System, Starting System, Ignition System, Lighting System, Horn, Wiper And Washer System, Audio & Visual System, Power Mirror Control System, Power Window Control System, Power Door Lock Control System, Instrument Panel, Combination Meter, Wiring Diagrams, Air Conditioning Amplifier Assy, Center Cluster Module Switch, Headlamp Dimmer Switch Assy, Windshield Wiper Switch Assy, Starter Switch, Parkneutral Position Switch
Body And Interior:
Hood, Front Bumper, Rear Bumper, Fender Panel Mudguard, Side Mudguard, Back Door Garnish, Front Door, Rear Door, Back Door, Sun Roof, Roof Antenna Pole Sub-Assy, License Plate Lamp Assy, Rear Combination Lamp Assy, Center Stop Lamp Assy, Front Marker Lamp Assy, Outer Rear View Mirror Assy, Inner Rear View Mirror Assy, Windshield Glass, Rear Door Glass Weatherstrip, Front Door Glass Weatherstrip, Roof Headlining, Quarter Window Assy, Seat, Seat Belt, Front Seat Belt, Rear Seat Belt, Clutch Pedal Sub-Assy, Brake Pedal, Steering Column, Horn Button Assy, Sun Roof System
Safety Systems:
Supplemental Restraint System (Airbag System), Side Air Bag Sensor Assy, Front Seat Airbag Assy, Passenger Air Bag Assy, Curtain Shield Air Bag Assy, Air Bag Sensor Rear, Air Bag Sensor Front, Center Air Bag Sensor Assy, Seat Position Air Bag Sensor, Seat Belt Warning System
Maintenance:
Routine maintenance checks and service intervals, Fluid checks and changes (engine oil, coolant, transmission fluid, brake fluid, power steering fluid, differential fluid), Filter replacements (oil, air, fuel), Belt inspection and replacement, Spark plug service, Battery maintenance
Diagnostics And Troubleshooting:
System diagnostic procedures, Symptom-based troubleshooting guides, Diagnostic Trouble Codes (DTCs) for engine, transmission, and ABS systems, Electrical system diagnostics using wiring diagrams
Repair And Rebuild:
Engine mechanical component replacement (cylinder head, cylinder block, camshaft, crankshaft, pistons, connecting rods), Transmission overhaul and component replacement, Brake system component replacement (master cylinder, calipers, pads, rotors), Suspension and steering component replacement (shocks, struts, ball joints, tie rods), Electrical component repair and replacement (alternator, starter, sensors, actuators), Body panel repair and replacement, HVAC system component repair
Technical Specifications:
Torque specifications for all fasteners, Dimensional specifications for critical components, Electrical component resistance and voltage specifications, Fluid capacities and types, Wheel alignment specifications, Emission control system specifications
Depth:
Comprehensive coverage for all major systems, including detailed disassembly, assembly, repair, and reassembly procedures. Includes diagnostic charts and troubleshooting flowcharts.
4.0L I6:
Displacement: 3964 cc (242 cu in), Bore x Stroke: 3.875 in x 3.56 in, Compression Ratio: 8.8:1, Horsepower: 190 hp @ 4600 rpm, Torque: 225 lb-ft @ 3200 rpm
2.5L I4:
Displacement: 2507 cc (153 cu in), Bore x Stroke: 3.875 in x 3.25 in, Compression Ratio: 8.8:1, Horsepower: 114 hp @ 4700 rpm, Torque: 145 lb-ft @ 3500 rpm
Acceleration 0 60:
Approx. 9-10 seconds (4.0L models)
Injection Type:
Sequential Fuel Injection (SFI)
Spark Plugs:
Champion Copper Plus (e.g., RC12ECC) or equivalent
Engine Oil Capacity:
5.6 L (5.9 US qt) with filter for 4.0L; 4.3 L (4.5 US qt) with filter for 2.5L
Engine Oil Type:
API SG or higher, SAE 10W-30 recommended for most conditions (check manual for specific climate recommendations)
Oil Change:
Every 3,000-5,000 miles (5,000-8,000 km) or 6 months, whichever comes first (depending on oil type and driving conditions).
Air Filter Replacement:
Every 15,000-30,000 miles (24,000-48,000 km) or as needed based on driving environment.
Coolant Flush:
Every 30,000 miles (48,000 km) or 2-3 years for conventional coolant, longer for OAT/HOAT (check manual for specific type).
Transmission Fluid Change:
Every 30,000-60,000 miles (48,000-96,000 km) for automatic transmissions, depending on usage. Manual transmissions typically require less frequent service.
Brake Fluid:
DOT 3 or DOT 4 (check manual for specific recommendation)
Power Steering Fluid:
Mopar Power Steering Fluid or equivalent ATF+4 (check manual for specifics)
Differential Fluid:
API GL-5, SAE 75W-90 or 80W-90 (front and rear differentials) - Capacity approx. 1.5-2 L per axle.
Common Problems:
Head gasket leaks (especially on older 4.0L engines, though less prevalent in later models), coolant leaks from radiator and heater core, starter heat soak (intermittent starting when hot), oil filter adapter housing leaks, TPS (Throttle Position Sensor) issues, minor electrical gremlins, rust on body and frame components (depending on climate).
Typical Repairs:
Replacement of cracked cylinder heads, radiator and heater core replacement, starter motor replacement, intake manifold gasket replacement, various sensor replacements (MAP, Crankshaft Position), body rust repair.