Engine:
2.5L AMC 150 I4, 4.0L AMC 242 I6; Engine Mechanical, Engine Control System, Emission Control Systems, Cooling System, Fuel System, Lubrication System, Starting System, Ignition System
Transmission:
Manual Transaxle (AX-5, AX-15), Automatic Transaxle (AW-4); Transmission Control Cable, Torque Converter Clutch, Manual Transaxle System, Automatic Transaxle System
Drivetrain:
Front Drive Shaft, Rear Axle Beam, Front Axle Hub, Rear Axle Hub, Front Differential Oil Seal, Drive Shaft, Differential Case Assy
Suspension Steering:
Front Suspension System, Rear Suspension System, Front Stabilizer Bar, Front Suspension, Rear Suspension, Front Shock Absorber, Rear Shock Absorber Assy
Brakes:
Brake System, Front Brake, Rear Brake, Brake Master Cylinder, Brake Pedal, Brake Actuator, Brake Booster, Parking Brake Cable, Parking Brake Lever
Electrical:
Charging System, Starter Assy, Generator Assy, Lighting System, Ignition System, Audio & Visual System, Radio Receiver Assy, Horn, Power Mirror Control System, Power Window Control System, Power Door Lock Control System, Wiring Diagrams
Body Interior:
Rear Bumper, Front Bumper, Fender Panel Mudguard, Side Mudguard, Back Door Garnish, Hood, Front Door, Rear Door, Sun Roof, Windshield Glass, Rear Door Glass Weatherstrip, Front Door Glass Weatherstrip, Roof Headlining, Instrument Panel, Steering Column, Seat, Seat Belt, Rear Seat Belt, Front Seat Belt, Combination Meter, Charcoal Canister
HVAC:
Heater Radiator Assy, Air Conditioning System, Air Conditioning Amplifier Assy, Air Conditioning Blower Assy, Pulley Compressor Assy, Heater & Air conditioner, Heater Or Boost Ventilator Control
Safety:
Supplemental Restraint System, Side Air Bag Sensor Assy, Front Seat Airbag Assy, Passenger Airbag Assy, Curtain Shield Airbag Assy, Center Air Bag Sensor Assy, Air Bag Sensor Rear, Air Bag Sensor Front, Seat Position Air Bag Sensor, Seat Belt Warning System, Shift Lock System
Maintenance:
Oil Change, Filter Replacement, Fluid Checks & Changes, Belt Replacement, Spark Plug Replacement, Tire Rotation, Brake Pad/Shoe Replacement, Wiper Blade Replacement
Repair:
Engine Rebuild (partial/complete), Transmission Overhaul, Suspension Component Replacement, Brake System Repair, Electrical Component Diagnosis & Replacement, Body Panel Repair, HVAC System Repair
Diagnostics:
Troubleshooting Guides, Symptom-Based Diagnostics, Diagnostic Trouble Codes (DTCs), Wiring Diagram Interpretation, Component Testing
Installation:
Accessory Installation, Component Replacement Procedures
Depth:
Comprehensive; Covers basic maintenance to complete engine and transmission rebuilds, electrical system diagnosis, and body repair.
Oil Change Interval:
3,750 miles or 6 months, whichever comes first (using conventional oil). 5,000 miles or 6 months (using synthetic oil).
Transmission Fluid Change Interval:
Check every 15,000 miles. Replace every 30,000-60,000 miles depending on driving conditions.
Coolant Change Interval:
2 years or 30,000 miles
Spark Plug Replacement:
30,000 miles (standard plugs)
Engine Oil Type:
API SG or SH, SAE 10W-30 (check owner's manual for climate variations)
Engine Oil Capacity:
4.5 quarts (4.3L) with filter for 4.0L I6; 4.0 quarts (3.8L) with filter for 2.5L I4
Coolant Type:
Ethylene Glycol based, Mopar OAT (Orange) or HOAT (Yellow) recommended for later service, typically conventional green type for original fill.
Engine 4.0L:
Cracking of cylinder head around spark plug holes (common on older models but less frequent on later XJ versions); Rusty water pump seals; Oil filter adapter leaks.
Transmission Aw4:
Overheating; Leaks from solenoid pack seals; Torque converter lock-up issues.
Suspension Steering:
Worn control arm bushings; Death wobble (can be caused by worn track bar, ball joints, or steering components); Leaking power steering pump/hoses.
Electrical:
Failing alternator; Cracked wiring harnesses (especially in engine bay); Faulty fuel pump relay; Overhead console failures (dome light).
Body Chassis:
Rust (especially rocker panels, floor pans, and rear quarters); Leaking rear main seal; Cracked exhaust manifolds (4.0L).