Positioning:
The 1999 Jeep Cherokee XJ represents a highly capable and enduring compact SUV, known for its ruggedness and off-road prowess. This manual targets owners and professional mechanics seeking in-depth technical information for maintenance, repair, and diagnostics.
Competitors:
Competed against vehicles like the Toyota 4Runner, Ford Explorer, Nissan Pathfinder, and Chevrolet Blazer. The XJ's unibody construction and solid axles set it apart in its segment for off-road capability.
Features:
Durable unibody construction, legendary Selec-Trac or Command-Trac 4x4 systems, robust inline-six engines, and a compact, highly maneuverable platform. The 1999 model year benefits from significant updates over previous generations.
Areas:
Introduction, Lubrication and Maintenance, Suspension, Differential and Driveline, Brakes, Clutch, Cooling System, Battery, Starting Systems, Charging System, Ignition System, Fuel System, Emission Control System, Exhaust System, Engine Mechanical, Transmission, Transfer Case, Wheels and Tires, Body, Frame, Steering, Heating and Air Conditioning (HVAC), Power and Manual Accessories, Restraints, Electrical System, Wiring Diagrams, Body Electrical, Diagnostics and Testing
Type:
Factory Electronic Service Repair Manual
Format:
Electronic (likely PDF)
Systems:
Engine mechanical (4.0L & 2.5L I6/I4), engine performance, cooling system, fuel system, ignition system, starting system, charging system, exhaust system, emission control systems, automatic transmission (AW4), manual transmission (AX-5, NV3550), transfer case (NP231, NP242), driveline and differentials (Dana 30 front, Chrysler 8.25 rear), suspension (front and rear), steering system, brake system (ABS and non-ABS), clutch system, HVAC system, power and manual accessories, body electrical, restraint systems, chassis electrical, frame and body repairs, diagnostics and troubleshooting.
Procedures:
Routine maintenance (oil changes, fluid checks, filter replacements), scheduled maintenance intervals, component diagnostics, troubleshooting guides, detailed repair procedures for all major systems, removal and installation of engine and transmission components, suspension and steering alignment, brake caliper and master cylinder service, electrical system diagnostics, HVAC system repair, body panel repair, airbag system service precautions, wiring diagram interpretation, torque specifications, diagnostic trouble codes (DTCs) interpretation and resolution.
Depth:
Comprehensive factory-level detail covering diagnosis, repair, and overhaul. Includes specifications, procedures, tolerances, and wiring diagrams necessary for professional-level service and repair.
Format:
Electronic Document (PDF recommended for searchability and ease of use)
Quality:
High resolution, suitable for digital viewing and printing of individual pages or sections.
Binding:
Not Applicable (Electronic)
Paper Type:
Not Applicable (Electronic)
Transmission Type Standard:
42RE 4-speed Automatic (with 4.0L engine)
Transmission Type Optional Auto:
AW4 4-speed Automatic (with 2.5L engine)
Transmission Type Optional Manual:
AX-5 5-speed Manual (with 2.5L engine)
Transmission Type Optional Manual 6Cyl:
NV3550 5-speed Manual (late 1999 model with 4.0L)
Transfer Case Options:
Selec-Trac (NV242), Command-Trac (NP231)
NHTSA Rollover Resistance:
4/5 stars (for 4WD models)
ABS:
Optional Anti-lock Braking System (ABS) on rear wheels, available on all four wheels on some models.
Airbags:
Driver and passenger front airbags.
Seatbelts:
3-point front seat belts with pretensioners, 3-point rear seat belts.
Audio System:
Factory AM/FM stereo with cassette player, optional CD player. Basic speaker systems.
Cruise Control:
Available as an option.
Traction Control:
Not typically available on this model year, focus is on mechanical grip and driver skill.
Phone Integration:
Not available from the factory.
Oil Change Interval Engine Oil:
Every 3,000-5,000 miles (4,800-8,000 km) or 6 months, whichever comes first, depending on oil type and driving conditions. Refer to manual for specific recommendation.
Engine Coolant Flush:
Every 30,000 miles (48,000 km) or 24 months.
Transmission Fluid Change:
Every 30,000-50,000 miles (48,000-80,000 km) for automatic transmission, more frequently for severe use. Manual transmission fluid change typically at 60,000-100,000 miles (96,000-160,000 km).
Engine Oil Specification:
API SN or SP, SAE 10W-30 (for 4.0L), SAE 5W-30 (for 2.5L). Check owner's manual for precise recommendations.
Coolant Specification:
Chrysler HOAT (Hybrid Organic Acid Technology) coolant, typically a green ethylene glycol based coolant. 50/50 mix with distilled water.
Automatic Transmission Fluid:
ATF+4 (MS-9602) for 42RE, Dexron III for AW4.
Manual Transmission Fluid Nv3550:
NV3550 requires Mopar NV3550 fluid or equivalent GL-4 gear oil.
Differential Fluid Front Rear:
API GL-5, SAE 80W-90. For Trac-Lok (limited-slip) differentials, add friction modifier.
Engine Cracked Cylinder Head 4.0L:
Common on earlier 4.0L engines, though less prevalent by 1999. Manual provides diagnostic procedures.
Heater Core Leaks:
Prone to leaks due to its location within the dashboard. Manual covers replacement procedures.
Power Steering Pump Leaks:
Can develop leaks at the pump or hoses. Manual details diagnostic and repair steps.
Rear Main Seal Leaks:
Can occur on higher mileage engines. Manual provides seal replacement procedures.
Transfer Case Chain Stretch:
Common in NP231 cases over time. Manual covers diagnosis and repair.
Jeep Legacy:
Building on Jeep's long history of producing rugged, go-anywhere vehicles, the Cherokee (XJ) redefined the compact SUV market with its blend of off-road capability and everyday usability.
Xj Generation:
The XJ was produced from 1984 to 2001, with significant updates in 1997 that included revised exterior styling, an improved interior, and updated powertrains, making the 1999 model a refined iteration of the original design.
Manufacturing Location:
Toledo, Ohio, USA
Production Years Xj:
1984-2001
Four Wheeler Magazine Pickup Truck Of The Year:
While specific awards for the 1999 model might vary, the Cherokee XJ platform itself has historically received accolades for its off-road capability and value from various automotive publications.
Value Proposition:
Consistently praised for its affordability and capability, making it a popular choice for budget-conscious off-road enthusiasts.
