Segment:
Compact SUV / Off-road Vehicle
Key Attributes:
Renowned for its off-road capability, compact size, and rugged construction.
Competitors Era:
Ford Bronco II, Chevrolet S-10 Blazer, Toyota 4Runner, Nissan Pathfinder.
Unibody Construction:
Pioneering unibody construction in its class for reduced weight and improved ride comfort compared to body-on-frame competitors.
Off Road Capability:
Solid axles (early models), robust four-wheel-drive system (Command-Trac NP231), and excellent ground clearance.
Durability:
Known for its robust engineering and ability to withstand demanding use.
Engine Mechanical:
Detailed information on all engine variants including diagnosis, overhaul, and repair procedures.
Engine Electrical:
Wiring diagrams, component testing, ignition system, fuel injection system (EFI) diagnostics.
Transmission Manual:
Service and repair procedures for manual transmissions.
Transmission Automatic:
Service and repair procedures for automatic transmissions, including torque converter.
Drivetrain 4Wd:
Focus on the Command-Trac NP231 transfer case and Dana 30/35 axles, including service and repair.
Suspension:
Front and rear suspension systems, including leaf springs, shocks, bushings, and alignment.
Steering:
Power steering system, steering column, and steering linkage components.
Brakes:
Disc and drum brake systems, including hydraulic components, parking brake, and ABS (where applicable).
Body Chassis:
Body panel removal/installation, structural repairs, corrosion protection, and chassis components.
HVAC:
Heating, Ventilation, and Air Conditioning (HVAC) system diagnosis and repair.
Electrical System:
Lighting, wipers, power windows, door locks, instrument cluster, and accessory circuits.
Fuel System:
Fuel pump, injectors, fuel lines, and evaporative emissions control system.
Cooling System:
Radiator, water pump, thermostat, cooling fans, and coolant specifications.
Exhaust System:
Exhaust manifolds, catalytic converter, mufflers, and pipes.
Routine Maintenance:
Oil changes, filter replacements, fluid checks, lubrication points, and tire rotations.
Troubleshooting:
Diagnostic flowcharts and symptom-based troubleshooting guides for various systems.
Component Repair:
Detailed, step-by-step instructions for disassembling, inspecting, repairing, and reassembling major components.
Engine Rebuild:
Comprehensive procedures for engine overhaul, including specifications for machining and tolerances.
Transmission Overhaul:
Detailed steps for rebuilding both manual and automatic transmissions.
Brake System Service:
Procedures for replacing brake pads, rotors, calipers, wheel cylinders, and bleeding the system.
Electrical Diagnostics:
Testing procedures for circuits, sensors, actuators, and control modules.
Body Work:
Removal and installation of body panels, doors, glass, and trim.
Diagnostic Tools:
References to specific diagnostic tools and procedures for identifying faults.
Special Tools:
Identification and usage of specialized tools required for certain repairs.
Torque Specifications:
Detailed torque values for all critical fasteners throughout the vehicle.
Clearances Tolerances:
Precise specifications for component clearances and operating tolerances.
Wiring Diagrams:
Comprehensive electrical schematics for all vehicle systems.
Engine Code Base:
AMC 2.5L 'Tech 4' (Iron Duke)
Engine Displacement Base:
2.5 Liters / 150.5 cubic inches
Engine Configuration Base:
Inline 4-cylinder
Power Base:
Approximately 112-125 hp @ 4800 rpm
Torque Base:
Approximately 145-170 lb-ft @ 2400 rpm
Engine Code Optional:
AMC 4.0L 'High Output' Inline-6
Engine Displacement Optional:
4.0 Liters / 242 cubic inches
Engine Configuration Optional:
Inline 6-cylinder
Power Optional:
Approximately 177-190 hp @ 4700 rpm
Torque Optional:
Approximately 220-240 lb-ft @ 3000 rpm
Fuel Delivery:
Multi-point Fuel Injection (MPI) for both engines.
Fuel Type:
Unleaded gasoline (87 octane recommended).
Transmission Type Standard:
5-speed manual transmission (e.g., AX-5 for 4-cyl, BA/10-5 for 6-cyl early models).
Transmission Type Optional:
3-speed automatic transmission (e.g., TF-999) or 4-speed automatic transmission (e.g., AW4).
Transfer Case:
Command-Trac NP231 part-time four-wheel-drive system with 2WD High, 4WD High, and 4WD Low ranges.
Gear Ratios:
Specific gear ratios for manual and automatic transmissions are detailed within the manual.
Manual Transmission Fluid:
GL-3 or GL-4 gear oil (e.g., SAE 75W-90 or 80W-90, specific specs in manual).
Automatic Transmission Fluid:
ATF+3 or ATF+4 (check manual for exact specification and capacity).
Wheelbase:
101.4 inches (2576 mm)
Length:
Approx. 165.4 inches (4201 mm)
Width:
Approx. 69.3 inches (1760 mm)
Height:
Approx. 63.6 inches (1615 mm)
Curb Weight:
Approx. 3,000 - 3,400 lbs (1361 - 1542 kg) depending on configuration.
Gross Vehicle Weight Rating:
Varies by model, typically around 4,500 - 4,700 lbs.
Cargo Volume:
Approx. 70.2 cubic feet with rear seats folded.
Oil Change Interval:
Typically every 3,000 miles or 3 months, but consult manual for specific engine/oil type.
Air Filter Replacement:
Every 15,000 miles or as needed based on driving conditions.
Spark Plug Replacement:
Typically every 30,000 miles (check manual for exact type and gap).
Coolant Flush:
Every 2 years or 30,000 miles.
Engine Oil Type:
10W-30 or 10W-40 for most conditions (verify with manual, especially for the 4.0L).
Engine Oil Capacity:
Approx. 5 quarts (4.7 liters) with filter for 4.0L, approx. 4.5 quarts (4.3 liters) for 2.5L (verify with manual).
Coolant Type:
Ethylene glycol-based coolant (typically green) mixed 50/50 with distilled water.
Brake Fluid Type:
DOT 3 brake fluid.
Common Problem 1:
Cracked cylinder heads on early 4.0L engines (pre-1991 models). Manual will detail inspection and replacement.
Common Problem 2:
Leaf spring perches cracking or breaking due to off-road stress. Manual provides repair guidance.
Common Problem 3:
Rusty floor pans and rocker panels, especially in areas with road salt. Manual covers body repair.
Common Problem 4:
Water pump leaks and radiator failures are common wear items. Manual details replacement procedures.
Common Problem 5:
Chrysler ignition systems (e.g., distributor and coil pack) can develop issues. Manual provides diagnostic steps.
Jeep Legacy:
Jeep has a long history dating back to World War II, known for producing rugged, capable off-road vehicles.
Xj Introduction:
The XJ Cherokee was introduced in 1984, marking a significant shift in the SUV market with its compact size and unibody construction.
Model Changes 84 93:
Key updates during this period included the introduction of the 4.0L inline-6 engine (initially in 1987), interior and exterior styling revisions, and improvements to the drivetrain and electronics.
Production Location:
Primarily manufactured in Toledo, Ohio, USA.
Ownership Changes:
During this period, Jeep was owned by American Motors Corporation (AMC) until its acquisition by Chrysler in 1987.
