Vehicle Segment:
Compact SUV / Sport Utility Vehicle
Jeep Brand Heritage:
Renowned for off-road capability and ruggedness
Key Competitors:
Ford Bronco II, Chevrolet S-10 Blazer, Toyota 4Runner, Nissan Pathfinder
Design Philosophy:
Unibody construction (a departure from traditional body-on-frame), strong off-road prowess, distinctive Jeep styling
Powertrain Options:
Longitudinal inline-six (4.0L) known for torque and durability, reliable 2.5L four-cylinder
Completeness:
Covers entire production run and major mechanical/electrical systems, ideal for DIY mechanics and professional shops
Accessibility:
Instant download format allows immediate access for diagnosis and repair
Powertrain:
Engine (2.5L I4, 4.0L I6), Transmission (Manual & Automatic), Transfer Case, Drivetrain (4WD systems)
Chassis:
Suspension (Front & Rear), Steering, Brakes (Front Disc/Rear Drum or Disc), Wheels & Tires
Electrical:
Wiring Diagrams, Lighting, Instrumentation, Power Distribution, Ignition System, Charging System, Starting System
Body And Interior:
Body Panels, Doors, Glass, Seats, HVAC System, Trim Components, Exterior/Interior Lighting
Diagnostics And Troubleshooting:
Component Testing, Diagnostic Trouble Codes (DTCs), Symptom-based Troubleshooting
Routine Maintenance:
Oil & Filter Changes, Air Filter Replacement, Spark Plug Service, Fluid Level Checks & Top-offs
Major Repairs:
Engine Overhaul/Rebuild, Transmission Overhaul, Clutch Replacement, Brake System Overhaul, Suspension Component Replacement
Diagnostics And Repair:
Fuel System Diagnosis, Cooling System Diagnosis, Ignition System Troubleshooting, Electrical System Fault Finding
Technical Specifications:
Torque Specifications, Clearances, Diagnostic Parameters, Fluid Capacities
Depth Of Coverage:
Comprehensive (from basic adjustments to complete engine and transmission rebuilds, including detailed wiring diagrams and diagnostic procedures)
Engine Displacement 40L:
4.0 Liters (242 cubic inches)
Engine Type 40L:
OHV Inline 6-cylinder
Engine Displacement 25L:
2.5 Liters (150 cubic inches)
Engine Type 25L:
OHV Inline 4-cylinder
Horsepower 40L Early:
173-177 hp @ 4700 rpm (depending on year)
Torque 40L Early:
220-224 lb-ft @ 3200 rpm (depending on year)
Horsepower 25L:
125 hp @ 4800 rpm
Torque 25L:
150 lb-ft @ 2400 rpm
Fuel Delivery Type:
Multi-point Fuel Injection (MPI)
Block Material 40L:
Cast Iron
Head Material 40L:
Cast Iron
Timing Drive 40L:
Timing Chain
Timing Drive 25L:
Timing Chain
Standard Transmission 40L
Transmission Type 40L Std:
4-speed Automatic (AW4)
Optional Transmission 40L
Transmission Type 40L Opt:
5-speed Manual (AX-15)
Standard Transmission 25L
Transmission Type 25L Std:
5-speed Manual (AX-5)
Optional Transmission 25L
Transmission Type 25L Opt:
3-speed Automatic (727 TorqueFlite) / 4-speed Automatic (AW4)
Transfer Case Options:
Command-Trac (Part-Time 4WD), Selec-Trac (Full-Time 4WD)
Automatic Transmission Fluid:
ATF+3 (Chrysler Mopar specification) or equivalent Dexron-III
Manual Transmission Fluid Ax15:
API GL-5, SAE 75W-90 Gear Oil
Manual Transmission Fluid Ax5:
API GL-5, SAE 75W-90 Gear Oil
Transfer Case Fluid:
ATF+3 (Chrysler Mopar specification) or equivalent Dexron-III
NHTSA Rollover Rating:
3-star (for early models)
Braking System:
Front disc brakes, rear drum brakes (some later models had rear discs)
Seat Belts:
Front and rear seat belts
Airbags:
Driver and passenger airbags (standard from 1994 onwards)
Oil Change Interval Gasoline:
Every 3,000-7,500 miles (5,000-12,000 km) or 6-12 months, depending on driving conditions and oil type (consult manual for specifics)
Transmission Fluid Change Interval:
Every 30,000-60,000 miles (50,000-100,000 km) for automatic, consult manual for manual transmissions.
Spark Plug Replacement Interval:
Every 30,000-100,000 miles (50,000-160,000 km) depending on spark plug type (e.g., platinum or iridium)
Engine Oil Type 40L:
API SN/SP, SAE 10W-30 (or 5W-30 in very cold climates)
Engine Oil Type 25L:
API SN/SP, SAE 10W-30
Coolant Type:
Chrysler HOAT (Hybrid Organic Acid Technology) or equivalent Ethylene Glycol/Propylene Glycol based antifreeze
Common Problems 40L:
Cracking cylinder head (especially earlier models), distributorless ignition system (DIS) issues, rear main seal leaks, catalytic converter failure, rust (body and frame)
Common Problems 25L:
Engine oil leaks, overheating, exhaust manifold cracks
Suspension Wear:
Worn control arm bushings, ball joints, and track bar bushings are common due to off-road use and age.
Wiring Harness Issues:
Corrosion in connectors, brittle insulation, especially in engine bay and at the firewall.
Jeep Legacy:
Established in 1941, known for military vehicles and iconic Wrangler
Generation Introduction:
Introduced in 1984 as a successor to the CJ-8 Scrambler and Wagoneer, the XJ pioneered the compact SUV segment with its unibody construction.
Design Changes:
Facelifted in 1987 with revised interior and exterior styling, updated engines, and improved aerodynamics. Further minor updates occurred throughout its lifespan.
Production Period:
1984-2001 (North America), extended production in other markets until 2001
Manufacturing Locations:
Toledo, Ohio, USA; Brampton, Ontario, Canada
