Vehicle Type:
Compact, body-on-frame SUV / off-road vehicle
Target Audience:
Off-road enthusiasts, Jeep owners, DIY mechanics, professional technicians
Contemporaries:
Ford Bronco, Chevrolet K5 Blazer, Toyota 4Runner (earlier models)
Vehicle:
Iconic Jeep design, robust off-road capability, solid axles (front and rear), leaf spring suspension, convertible options (soft-top, hard-top).
Manual Value:
Provides vehicle-specific, in-depth technical data identical to factory service information, enabling accurate maintenance and repair.
Overall:
All models and all repairs A-Z
Estimated:
Varies by specific publisher/edition, typically 1000+ pages for comprehensive factory-style manuals.
Primary:
Service and Repair Manual
Common:
Printed Book (often wire-bound or perfect-bound)
Engine:
Engine mechanical, cooling system, lubrication system, fuel system, ignition system, emission control systems
Transmission:
Manual transmission (AX-5, AX-15), Automatic transmission (AW-4), transfer case (NP231, NP207)
Drivetrain:
Front and rear axle assembly, driveshafts, universal joints, wheel bearings
Suspension:
Front leaf spring suspension, rear leaf spring suspension, shock absorbers, steering components
Brakes:
Front disc brakes, rear drum brakes, parking brake system, hydraulic system
Electrical:
Battery, charging system (alternator), starting system (starter motor), ignition system, lighting, instruments and gauges, wiring diagrams, fuses and relays, accessories (radio, wipers, etc.)
Body:
Body panels, doors, hood, tailgate, interior trim, seats, convertible top system, frame and chassis components
Maintenance:
Scheduled maintenance intervals, fluid changes, filter replacements, lubrication points, inspections
Diagnostics:
Troubleshooting guides, symptom-based diagnostics, diagnostic trouble codes (DTCs) if applicable to OBD-I systems
Repair:
Component removal and installation, disassembly and reassembly, adjustments, calibrations, specific repair procedures for all major systems
Specifications:
Torque specifications, clearances, fluid capacities, electrical values, diagnostic parameters
Level:
Comprehensive, covering everything from basic fluid checks and filter changes to complete engine and transmission overhauls, and complex electrical system diagnosis.
Digital:
PDF (often, if a digital version is available). Searchable text is a highly desirable feature.
For Printed:
High-quality paper stock with clear, legible text and diagrams. Often features glossy pages for durability.
For Printed:
Typically wire-O, spiral, or perfect bound for lay-flat usability in a workshop environment.
For Printed:
Durable, often coated paper to withstand workshop conditions and repeated use.
Name:
2.5L 'AMC 150' Inline-4
Displacement:
2.5 Liters (150 cubic inches)
Configuration:
Inline-4 Cylinder
Valve Train:
Overhead Valve (OHV)
Fuel Delivery:
Multi-point Fuel Injection (MPI)
Horsepower:
Approximately 123 hp @ 4600 rpm
Torque:
Approximately 170 lb-ft @ 2400 rpm
Name:
4.0L 'AMC 242' Inline-6
Displacement:
4.0 Liters (242 cubic inches)
Configuration:
Inline-6 Cylinder
Valve Train:
Overhead Valve (OHV)
Fuel Delivery:
Multi-point Fuel Injection (MPI)
Horsepower:
Approximately 180 hp @ 4600 rpm
Torque:
Approximately 220 lb-ft @ 3200 rpm
Type:
Electronic Fuel Injection (EFI)
Type:
5-Speed Manual (Aisin-Warner AX-5)
Type:
3-Speed Automatic (Chrysler 32RH / AW-4)
Transfer Case Standard:
New Process NP231 Command-Trac (2.72:1 low range)
Transfer Case Optional:
New Process NP207 (some early YJ models had this, often replaced by NP231)
Manual Ax5:
API GL-5, SAE 75W-90 or 80W-90 gear oil
Automatic Aw4:
Chrysler ATF+3 (or equivalent specification)
Wheelbase:
93.4 inches (2372 mm)
Length:
150.3 inches (3818 mm)
Width:
66.4 inches (1687 mm)
Height:
64.5 inches (1638 mm) (soft top)
Curb Weight:
Approximately 3,200 - 3,500 lbs (1450 - 1590 kg), depending on engine and options
Gross Vehicle Weight Rating:
Approximately 4,400 - 4,700 lbs (2000 - 2130 kg)
NHTSA Rollover Resistance:
3-star (typical for vehicles of this era with high center of gravity)
Standard:
Four-wheel drive system (part-time), power brakes (front discs, rear drums)
Standard:
Seat belts (lap and shoulder belts for front occupants), roll bar (integrated into windshield frame and body structure)
Oil Change:
Every 3,000 miles or 3 months, whichever comes first. Check manual for specific mileage/time recommendations.
Tire Rotation:
Every 6,000 - 7,500 miles
Spark Plugs:
Refer to manual, typically around 30,000 miles for standard plugs, potentially longer for platinum or iridium.
Engine Oil:
API SG/SH, SAE 10W-30 recommended (check manual for exact viscosity and API rating for your climate)
Coolant:
Ethylene glycol-based antifreeze, 50/50 mix with distilled water. Specification: Chrysler MS-7170 or equivalent.
Brake Fluid:
DOT 3 brake fluid
Power Steering Fluid:
ATF+3 or equivalent power steering fluid
Common Engine 4.0L:
Oil filter adapter gasket leaks, rear main seal leaks, cylinder head issues (less common but possible), exhaust manifold cracks.
Common Transmission:
AX-5 synchro wear, AW-4 solenoid issues, transfer case chain stretch.
Common Suspension:
Leaf spring fatigue/sag, worn bushings, leaky shock absorbers.
Common Electrical:
Corrosion on electrical connectors, alternator issues, ignition switch problems.
Common Body:
Rust (especially on floor pans, rocker panels, and fenders), door seal leaks, convertible top wear.
Jeep Legacy:
Continuity from the original Willys Jeep and CJ series, maintaining off-road prowess and rugged utility.
Yj Generation Start:
1987
Yj Distinguishing Features:
Rectangular headlights (unique to YJ generation), coil springs replaced by leaf springs compared to CJ, introduction of fuel injection and automatic transmissions.
Manufacturing Location:
Toledo, Ohio, USA
