Segment:
Compact SUV / Off-Road Vehicle
Competitors 1989:
Ford Bronco II, Chevrolet S-10 Blazer, Nissan Pathfinder, Toyota 4Runner
Platform:
Unibody construction (pioneering for SUVs), solid front axle (pre-1984), coil spring front suspension (post-1983), leaf spring rear suspension
Body Styles:
2-door, 4-door
Off Road Capability:
Renowned for its robust drivetrain, capable 4x4 system (Command-Trac NV242 or Selec-Trac NV242 optional), and compact size.
Powertrain:
Engine mechanical, fuel system, ignition system, lubrication, cooling, exhaust, manual transmission, automatic transmission, transfer case, driveline
Chassis:
Suspension (front and rear), steering system, braking system (front discs, rear drums), wheels and tires
Electrical:
Battery, charging system, starting system, lighting, instruments, gauges, horn, wipers, washers, power windows, power locks, audio system wiring, HVAC blower, trailer towing wiring
Body And Trim:
Exterior body panels, interior trim, doors, windows, seats, roof (including optional sunroof), bumpers, grilles
Maintenance:
Scheduled maintenance, oil change, filter replacement, fluid checks and changes, lubrication, tune-ups
Repair:
Engine overhaul, transmission overhaul, brake caliper/wheel cylinder replacement, suspension component replacement, steering gearbox rebuild, electrical component diagnosis and replacement
Diagnostics:
Troubleshooting charts, symptom-based diagnosis, diagnostic trouble codes (if applicable for the era), component testing procedures
Rebuild:
Engine rebuild specifications (bore, stroke, clearances), transmission rebuild steps, differential rebuild
Depth:
Comprehensive (covers basic to advanced diagnostics and complete overhauls)
Type:
4-Speed Automatic (AW4)
Type:
5-Speed Manual (AX-5)
Transfer Case Standard 4Wd:
New Process NP228 (Part-time 4WD)
Transfer Case Optional 4Wd:
New Process NP242 (Selec-Trac, Full-time 4WD)
Oil Change Interval Miles:
3,000 - 5,000 miles or 3-6 months (depending on driving conditions)
Engine Coolant Change Miles:
30,000 miles or 2 years
Transmission Fluid Change Miles:
30,000 - 60,000 miles (depending on manual vs. automatic and driving)
Engine Oil Type:
API SN/SM/SL/SJ/SH/SG or CD, SAE 10W-30 (check manual for specific viscosity based on temperature)
Engine Oil Capacity Quarts:
5.0 (with filter)
Automatic Transmission Fluid:
Mopar ATF+4 (or equivalent DEXRON III compatible fluid)
Manual Transmission Fluid:
Mopar Manual Transmission Lubricant (or GL-4 rated gear oil)
Transfer Case Fluid:
Mopar NV242 Transfer Case Lubricant (or equivalent SAE 75W-90 GL-5 gear oil)
Coolant Type:
Chrysler Long Life (50/50 mix of antifreeze and distilled water)
Common Problems 40L:
Cracked cylinder heads (less common in later years), oil filter adapter housing leaks, CPS (Crankshaft Position Sensor) failure
Common Problems 25L:
Oil leaks, head gasket issues, valve cover gasket leaks
Common Problems Chassis:
Leaf spring 'φάλση' (sagging), control arm bushings wear, exhaust system rust
Common Problems Electrical:
Actuator failures (power windows, locks), HVAC blower motor resistor failure, instrument cluster issues
Jeep Legacy:
Jeep's long history of producing rugged, capable off-road vehicles.
Xj Introduction:
Introduced in 1984 as a revolutionary compact SUV, moving away from traditional body-on-frame construction to a unibody design.
1989 Updates:
Minor styling refinements, potential upgrades to interior ergonomics, and availability of the robust 4.0L I6 engine.
Production Years Xj:
1984-2001
Assembly Location:
Toledo, Ohio, USA
