Target Audience:
Professional Technicians, Experienced DIY Mechanics, Jeep Enthusiasts undertaking restoration projects
Value Proposition:
Provides comprehensive, dealership-level information at a fraction of the cost of official service manuals or professional labor.
Ease Of Use:
Numbered instructions, bold figure numbers, detailed illustrations, and a clear table of contents facilitate efficient repair processes.
Diagnostic Support:
Integrates troubleshooting and electrical service procedures with detailed wiring diagrams for simplified diagnosis.
Powertrain:
Engine (4.0L Inline-6 OHV, 2.5L Inline-4 OHV), Transmission (AX-5, AX-15, AW-4), Transfer Case (NP231, NP242), Drivetrain (4x4 systems, axles, driveshafts)
Chassis:
Suspension (leaf springs, coil springs, shocks, control arms), Steering (power steering system, steering column), Brakes (disc/drum systems, ABS if applicable), Wheels & Tires
Electrical:
Wiring Diagrams, Ignition System, Charging System, Starting System, Lighting, Instrumentation, Audio System, HVAC Controls, Power Accessories (windows, locks)
Body And Interior:
Body Panels, Doors, Hood, Tailgate, Interior Trim, Seats, Glass, Body Sealing, HVAC System (non-electrical components)
Maintenance:
Oil change, filter replacement, fluid checks and top-offs, lubrication, tune-up procedures, belt inspection and replacement
Repair:
Engine rebuilds, transmission overhauls, brake system repairs, suspension component replacement, electrical component troubleshooting and replacement, body panel repair
Diagnostics:
Troubleshooting guides for common issues, diagnostic charts, specific component testing procedures, electrical circuit diagnostics
Level Of Detail:
Comprehensive (suitable for professional technicians and advanced DIYers)
Diagnostic Tools:
Guidance on using diagnostic tools and interpreting sensor data
Engine 1:
4.0L (3960cc) OHV Inline-6 'High Output' (AMC 242)
Engine 2:
2.5L (2464cc) OHV Inline-4 (AMC 150)
4.0L Horsepower:
Approx. 180-190 hp @ 4750 rpm (varies slightly by year/tune)
4.0L Torque:
Approx. 220-225 lb-ft @ 3250 rpm (varies slightly by year/tune)
2.5L Horsepower:
Approx. 125 hp @ 4600 rpm
2.5L Torque:
Approx. 150 lb-ft @ 2400 rpm
Injection Type:
Electronic Fuel Injection (EFI) - Sequential Port Injection
Coolant Type:
Mopar Antifreeze/Coolant (Ethylene Glycol based) - typically a green coolant for this era.
Ignition Type:
Distributorless Ignition System (DIS) with Crankshaft Position Sensor (CPS) on 4.0L. Distributor ignition on 2.5L.
Manual Transmission:
AX-5 5-speed manual (common with 2.5L and some 4.0L models)
Manual Transmission 2:
AX-15 5-speed manual (heavy-duty, common with 4.0L models)
Automatic Transmission:
AW-4 4-speed automatic (common with 4.0L models)
Fluid Type Aw4:
ATF+3 (Chrysler specification, equivalent to Dexron II/III compatible fluids for this era)
Fluid Type Ax15 Ax5:
GL-3 or GL-4 gear oil (typically SAE 75W-90 or 80W-90)
NHTSA Rollover Resistance:
N/A (Not independently rated by NHTSA for this era)
ABS:
Optional rear ABS (Anti-lock Braking System) on some models
Airbags:
Driver-side airbag standard on most 1993 models.
Seatbelts:
3-point front seatbelts, 2-point rear lap belts (or optional 3-point)
Oil Change Interval:
Every 3,000-5,000 miles or 6 months, whichever comes first (depending on usage and oil type).
Coolant Flush:
Every 30,000 miles or 2 years.
Transmission Fluid Change:
AW-4: Every 30,000-60,000 miles. AX-5/AX-15: As per service manual, often longer intervals if not subjected to heavy use.
Engine Oil Spec:
API SG or higher. Viscosity: 10W-30 recommended for most conditions, 10W-40 or 5W-30 for extreme temperatures. (Check manual for precise specs).
Power Steering Fluid:
ATF+3 or Mopar Power Steering Fluid
Engine 40L:
Cracking exhaust manifolds, head gasket leaks (on earlier versions), distributor less ignition system (CPS failures), oil filter housing leaks.
Engine 25L:
Oil leaks, distributor issues.
Transmission Aw4:
Solenoid failures, torque converter shudder.
Yj Suspension:
Leaf spring wear and breakage, shock absorber degradation.
Electrical:
Wiring harness chafing, grounds corrosion, alternator failures.
Jeep Legacy:
Rooted in WWII utility vehicles, Jeep has a long history of producing capable off-road vehicles.
Xj Introduction:
The XJ Cherokee was introduced in 1984 as a revolutionary compact SUV with unibody construction, offering a car-like ride with Jeep's legendary capability.
Yj Introduction:
The YJ Wrangler, introduced in 1987, replaced the CJ series and featured distinctive square headlights, a departure from Jeep's round-light tradition.
Xj Production Years:
1984-2001 (North America)
Yj Production Years:
1987-1995
