Engine Mechanical:
Complete disassembly, assembly, inspection, and repair of engine components. Includes cylinder block, cylinder head, camshaft, crankshaft, pistons, connecting rods, valves, seals, gaskets, timing systems.
Cooling System:
Radiator, water pump, thermostat, cooling fan system, hoses, coolant specifications, bleeding procedures.
Fuel System:
Fuel tank, fuel pump, fuel injectors, fuel lines, fuel filter, fuel pressure testing, SFI (Sequential Multi-port Fuel Injection) system.
Exhaust System:
Exhaust pipes, catalytic converter, muffler, oxygen sensors, emission control systems, charcoal canister.
Lubrication System:
Oil pump, oil filter, oil pan, oil passages, lubrication specifications, oil change procedures.
Ignition System:
Spark plugs, ignition coils, distributor (if applicable), ignition timing, troubleshooting.
Starting System:
Starter motor assembly, starter switch, troubleshooting.
Charging System:
Alternator (Generator) assembly, voltage regulator, battery, charging circuit diagnostics.
Transmission Manual:
Manual transaxle assembly, clutch system (clutch pedal, clutch master cylinder, clutch release cylinder, clutch unit), clutch operation, fluid specifications, maintenance, repair.
Transmission Automatic:
Automatic transaxle assembly, torque converter clutch, transmission valve body, transmission control cable, transmission fluid specifications, maintenance, repair.
Drive Shaft:
Front and rear drive shafts, U-joints, CV joints, maintenance, repair.
Differential:
Front and rear differential case assembly, differential oil seals, fluid specifications, maintenance, repair.
Suspension Front:
Front suspension system, front stabilizer bar, front shock absorbers, control arms, ball joints, tie rod ends, wheel bearings, front wheel alignment, front axle hub.
Suspension Rear:
Rear suspension system, rear axle beam, rear coil springs, rear shock absorbers, rear wheel alignment, maintenance.
Steering System:
Steering system, power steering, power steering link assembly, steering column, steering wheel, steering sensor, troubleshooting.
Brake System:
Brake system, brake master cylinder, brake booster, brake pedal, front brake components (calipers, rotors, pads), rear brake components, parking brake cable, parking brake lever, brake fluid specifications, ABS (Skid Control Sensor), brake actuator.
Wheels And Tires:
Wheel and tire system, tire specifications, tire rotation, wheel balancing, wheel alignment, tire pressure recommendations.
Body Repair:
Body repair procedures, panel replacement (hood, fender panel mudguard, rear bumper, front bumper), door repair (front door, rear door), back door garnish, glass replacement (windshield glass, rear door glass), weatherstripping, body panel alignment.
Electrical System:
Wiring diagrams, interior and exterior lighting (headlamps, front marker lamp, rear combination lamp, license plate lamp assy, side turn signal lamp assy), horn, wipers and washer system (wiper motor, wiper rubber, washer nozzle), instrumentation (combination meter), audio and visual system (radio receiver assy, speakers, amplifier), power windows, power mirrors, power door locks, sunroof system, instrument panel, center cluster module switch, antenna (roof antenna pole sub-assy, antenna cord sub-assy, amplifier antenna assy).
Safety Systems:
Supplemental Restraint System (SRS) / Airbag System (air bag sensor front, air bag sensor rear, side air bag sensor assy, front seat air bag assy, passenger air bag assy, curtain shield air bag assy, center air bag sensor assy), seat belts (front seat belt, rear seat belt, seat belt warning system), shift lock system, parkneutral position switch, yaw rate sensor.
HVAC System:
Air conditioning system, heater radiator assy, air conditioning blower assy, receiver condenser assy, air conditioning amplifier assy, heater & air conditioner controls, refrigerant specifications.
Maintenance:
Routine maintenance schedules, oil changes, filter replacements, fluid checks and top-offs, lubrication points.
Troubleshooting:
Diagnostic procedures, common fault identification, symptom-based troubleshooting guides for all major systems.
Repair:
Step-by-step disassembly and reassembly instructions for all vehicle components. Detailed repair procedures for mechanical, electrical, and body components.
Technical Specifications:
Torque specifications for all fasteners, alignment specifications, fluid capacities, electrical specifications, component clearances, emissions specifications.
Wiring Diagrams:
Comprehensive electrical wiring diagrams for all systems, including component locations and circuit tracing.
Depth Of Coverage:
Covers everything from basic maintenance and fluid changes to in-depth engine and transmission rebuilds, complex electrical diagnostics, and body panel repair.
Diagnostic Capabilities:
Detailed diagnostic procedures for engine control, transmission control, ABS, airbags, and other electronic systems. Includes component testing and troubleshooting pathways.
Oil Change Interval:
Typically every 3,000 - 5,000 miles (4,800 - 8,000 km) or every 6 months, depending on driving conditions and oil type. Refer to manual for exact specification.
Transmission Fluid Interval:
Automatic: Every 30,000 - 60,000 miles (48,000 - 96,000 km). Manual: Check for leaks, change if contaminated or upon major overhaul.
Coolant Change Interval:
Typically every 30,000 - 50,000 miles (48,000 - 80,000 km) or every 2 years, with modern extended-life coolants.
Engine Oil Type 4.0L I6:
SAE 10W-30 is generally recommended by Jeep for this engine.
Engine Oil Type 2.5L I4:
SAE 10W-30 is generally recommended by Jeep for this engine.
Engine Oil Type 2.5L Diesel:
Specific diesel engine oil specification required (refer to manual or owner's manual).
Automatic Transmission Fluid:
Chrysler ATF+4 (or equivalent) is typically specified for the 42RE transmission. AW4 may use Dexron III. Consult manual.
Manual Transmission Fluid:
GL-3 or GL-4 gear oil for AX-5/NV1500 (specific viscosity like 75W-90 or 80W-90). Consult manual.
Power Steering Fluid:
ATF+4 or a compatible power steering fluid.
Brake Fluid Type:
DOT 3 or DOT 4 brake fluid.
Coolant Type:
Chrysler/Mopar Antifreeze/Coolant (Green) or equivalent HOAT coolant.
Common Issues 4.0L I6:
Cracked cylinder head (especially early models, but can affect any XJ), camshaft position sensor failures, intake manifold gasket leaks, distributor less ignition system (coil rail) issues.
Common Issues Xj Chassis:
Rust (especially frame rails, rocker panels, and floor pans), minor electrical gremlins, headliner sagging, rear main seal leaks (4.0L), front control arm bushings wear.
Common Issues Diesel:
Specific to VM Motori diesel: Injector issues, glow plug problems, potential head gasket issues if not maintained properly.