Manual Coverage
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Systems Covered
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Engine:
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Engine mechanical, lubrication, cooling, fuel, ignition, emission control systems
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Transmission:
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Manual and automatic transmission, clutch system
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Driveline:
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Transfer case, axles, differentials, driveshafts, CV joints
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Suspension:
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Front and rear suspension systems, shock absorbers, springs, bushings, alignment
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Brakes:
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Brake system diagnosis, hydraulic components, power assist, parking brake
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Electrical:
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Battery, charging system, starting system, lighting, instrument cluster, body electrical, power accessories, basic wiring diagrams
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Steering:
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Steering gear, power steering system, steering column
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Body:
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Body and frame, exterior trim, interior trim, doors, windows, convertible top
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Chassis:
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Frame and underbody components
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Procedures Included
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Maintenance:
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Scheduled maintenance, lubrication, fluid changes, filter replacement, inspections
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Troubleshooting:
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Diagnostic procedures, symptom-based troubleshooting, fault code identification (where applicable)
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Repair:
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Component removal, disassembly, inspection, repair, reassembly, and installation procedures
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Diagnostics:
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Detailed diagnostic trees, electrical system testing, mechanical system checks
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Engine Mechanical:
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Engine assembly/disassembly, cylinder head service, piston and rod replacement, crankshaft service, timing system.
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Transmission Repair:
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Clutch replacement, transmission overhaul (manual and automatic), torque converter service.
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Axle Differential:
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Front and rear axle overhaul, differential gear setup, bearing replacement, seal replacement.
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Brake System Service:
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Brake pad and rotor replacement, caliper overhaul, master cylinder replacement, brake bleeding procedures.
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Electrical Diagnostics:
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Starter motor, alternator, battery testing and replacement, circuit testing, fuse and relay identification.
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Technical Depth
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Depth:
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Comprehensive: Covers everything from routine maintenance to major overhaul and component replacement. Suitable for professional technicians and skilled DIY enthusiasts.
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Engine Specifications
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Primary Engine
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Engine Code:
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4.0L Inline-6 (GME-4.0)
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Displacement:
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3956 cc (241 cubic inches)
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Configuration:
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Overhead Valve (OHV) Inline 6-cylinder
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Bore X Stroke:
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3.875 in x 3.580 in (98.4 mm x 91.0 mm)
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Compression Ratio:
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8.8:1
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Performance
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Horsepower:
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190 hp @ 4600 rpm (approx.)
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Torque:
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235 lb-ft @ 3200 rpm (approx.)
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Fuel System
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Fuel Delivery:
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Sequential Multi-Port Fuel Injection (MPI)
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Fuel Type:
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Unleaded Gasoline
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Fuel Octane Rating:
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87 Octane Recommended
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Ignition System
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Type:
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Distributorless Ignition System (DIS) with Coil-on-Plug (COP) or Coil Pack configuration
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Cooling System
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Type:
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Pressurized, liquid-cooled
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Coolant Capacity:
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Approx. 12.2 quarts (11.5 liters)
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Lubrication System
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Oil Capacity:
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Approx. 6.0 quarts (5.7 liters) with filter
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Oil Viscosity:
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SAE 10W-30 Recommended for most ambient temperatures
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Emission Control
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System:
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Catalytic Converter, Oxygen Sensors, EGR (where applicable)
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Maintenance
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Service Intervals
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Oil Change:
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Every 3,000-5,000 miles or 6 months, whichever comes first (refer to manual for specific conditions)
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Engine Air Filter:
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Inspect every 15,000 miles, replace as needed or every 30,000 miles
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Spark Plugs:
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Replace every 100,000 miles (if equipped with original platinum or iridium plugs)
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Transmission Fluid:
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Manual: Inspect annually, change as per manual recommendations. Automatic: Change every 30,000-60,000 miles or per manual.
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Transfer Case Fluid:
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Change every 30,000-60,000 miles or annually
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Fluid Specifications
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Engine Oil Specification:
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API Service SN or SP, SAE 10W-30
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Coolant Type:
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Mopar Antifreeze/Coolant, 5/100 (Ethylene Glycol based)
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Brake Fluid Type:
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DOT 3
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Known Issues
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Common Problems:
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Cracked exhaust manifolds, heater control valve leaks, front sway bar disconnect issues, aging rubber bushings, potential for rust on frame and body components, steering box wear.
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Engine Issues:
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4.0L is generally robust, but exhaust manifold cracks are a common concern, leading to ticking noises and exhaust leaks.
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Drivetrain Issues:
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U-joint wear, differential seal leaks, and transfer case chain stretch can occur with higher mileage or aggressive off-road use.
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