Vehicle Segment:
Compact SUV, known for its off-road capability and durability
Target Demographic:
Individuals seeking a capable, reliable, and relatively compact SUV for everyday use and off-road adventures.
Key Competitors 1999:
Toyota RAV4, Honda CR-V, Ford Explorer (though Explorer is larger)
Distinctive Attributes:
Unibody construction (lighter than body-on-frame), legendary Selec-Trac and Command-Trac 4WD systems, robust inline-6 engine option
Powertrain:
Engine lubrication, cooling, fuel, exhaust, ignition systems; Transmission (manual and automatic) operation, diagnostics, and repair; Drivetrain (differentials, transfer case, axles) service
Chassis:
Suspension (front and rear), steering, brakes (hydraulic, ABS), wheels, tires
Electrical:
Starting and charging systems, lighting, instrument cluster, body electrical, power accessories, chassis and powertrain control modules (diagnostics and repair)
Body And Trim:
Exterior body panels, interior trim, seating, glass, doors, HVAC system
Engine Mechanical:
Cylinder head, pistons, connecting rods, crankshaft, camshaft, valve train, oil pump, timing components
Engine Electrical:
Ignition system, fuel injection system components (injectors, sensors, ECU), starter motor, alternator, wiring diagrams
Transmission Manual:
Clutch assembly, gearbox components, shifter mechanism
Transmission Automatic:
Torque converter, valve body, internal gear sets, seals, clutches, bands, cooler circuits
Transfer Case:
Lubrication, internal components, linkage adjustments
Maintenance Tasks:
Scheduled maintenance intervals, fluid level checks and changes, filter replacements, lubrication points
Diagnostic Procedures:
Troubleshooting guides for common symptoms, diagnostic trouble codes (DTCs), electrical circuit testing, component testing
Repair Procedures:
Step-by-step instructions for component removal, disassembly, inspection, repair, assembly, and installation
Technical Adjustments:
Wheel alignment specifications, brake adjustments, clutch adjustments, idle speed settings
Torque Specifications:
Critical torque values for all major fasteners (engine, transmission, suspension, brakes, chassis)
Wiring Diagrams:
Detailed electrical schematics for all vehicle systems, including power distribution, grounding, and component circuits
Special Tools:
Identification and usage of specialized tools required for specific repair or diagnostic procedures
Troubleshooting Charts:
Flowchart-style troubleshooting guides for diagnosing electrical and mechanical faults
Depth Of Coverage:
Comprehensive, covering from basic routine maintenance to in-depth engine and transmission overhauls, including electrical system schematics and troubleshooting
Diagnostic Codes:
Listing and explanation of Diagnostic Trouble Codes (DTCs) and diagnostic procedures to pinpoint faults
Emission Controls:
Coverage of emission control systems, component testing, and diagnosis
Engine 1:
4.0L (3956cc) OHV V6 "6-242" AMC 360
Engine 1 Displacement Liters:
4.0
Engine 1 Block Type:
Inline
Engine 1 Fuel Delivery:
Multi-point fuel injection (MPI)
Engine 1 Horsepower Hp:
182
Engine 1 Torque Lb Ft:
220
Engine 1 Cooling System:
Pressurized liquid cooling system with engine-driven fan or optional electric fan
Engine 1 Ignition System:
Distributorless Ignition System (DIS) with coil-on-plug or distributor with coil (depending on specific build date/variant)
Engine 2:
2.5L (2460cc) OHV 4-Cylinder "4-150" AMC 150
Engine 2 Displacement Liters:
2.5
Engine 2 Fuel Delivery:
Multi-point fuel injection (MPI)
Engine 2 Horsepower Hp:
118
Engine 2 Torque Lb Ft:
145
Oil Change Interval:
Every 3,000-5,000 miles or 3-6 months (typical for the era, consult manual for specifics)
Coolant Flush Interval:
Every 30,000-50,000 miles or 2-3 years
Transmission Fluid Change Interval:
Every 30,000-60,000 miles, depending on usage (heavy use requires more frequent changes)
Engine Oil Spec:
API SG/SH or higher, SAE 10W-30 or 10W-40 (refer to manual for specific viscosity based on climate)
Coolant Type:
Chrysler (or Mopar) OAT (Organic Additive Technology) or HOAT (Hybrid OAT) coolant, typically green or orange
Transmission Fluid Auto:
ATF+3 (or equivalent Mopar spec)
Transmission Fluid Manual:
API GL-5, SAE 75W-90 or 80W-90 gear oil
Differential Fluid:
API GL-5, SAE 75W-90 or 80W-90 gear oil (check for limited-slip additive requirement)
Power Steering Fluid:
ATF+3 or Mopar power steering fluid
Common Problems Xj:
Head gasket failure on 4.0L (especially earlier models), transmission cooler line leaks, rust (rocker panels, floor pans, unibody structure), rear main seal leaks, worn leaf spring bushings, clogged catalytic converter