Engine Mechanical:
Engine disassembly, assembly, rebuild procedures, cylinder head, block, crankshaft, pistons, connecting rods, timing system (chain/belt), valve train.
Fuel System:
Fuel tank, fuel pump, fuel filter, fuel injection system (injectors, pressure regulator), throttle body, vapor control.
Lubrication Cooling System:
Oil pump, oil filter, oil passages, radiator, water pump, thermostat, coolant hoses, cooling fan operation.
Ignition System:
Spark plugs, ignition coils, distributor (if applicable for early XJ), crankshaft position sensor, camshaft position sensor, ignition timing.
Emission Control System:
Catalytic converter, oxygen sensors, EGR system, PCV system, evaporative emission control system (EVAP).
Transmission Manual:
Clutch operation, clutch master/slave cylinder, transmission disassembly and assembly, gear inspection, shift linkage.
Transmission Automatic:
Transmission fluid type, filter replacement, torque converter, valve body, transmission control module (TCM) operation, diagnostic trouble codes (DTCs).
Transfer Case:
Operation of 2WD/4WD systems, transfer case disassembly and assembly, fluid specifications, service procedures.
Drivetrain Axles:
Front and rear axle assemblies, differentials, CV joints, U-joints, driveshafts, axle ratios.
Steering System:
Power steering pump, steering gear/rack and pinion, tie rods, steering column, steering wheel removal.
Suspension System:
Front and rear suspension components (leaf springs, coil springs, control arms, shock absorbers, sway bars), alignment specifications.
Brake System:
Front and rear brake inspection, disc brake pads, rotors, calipers, drum brake shoes, wheel cylinders, brake lines, ABS system.
Electrical System Charging:
Alternator, battery, starter motor, charging circuit diagnostics.
Electrical System Lighting:
Headlights, taillights, interior lights, turn signals, hazard lights, bulb specifications.
Electrical System Instruments:
Instrument cluster, gauges (speedometer, tachometer, fuel, temperature), warning lights, warning chimes.
Electrical System Accessories:
Power windows, power door locks, sunroof (if equipped), wipers, horn, audio system, power outlets.
Body Interior:
Interior trim panel removal, seat removal, dashboard disassembly, headliner, carpet replacement.
Body Exterior:
Door panel removal, hood, fenders, bumpers, tailgate, glass replacement, weatherstripping.
HVAC System:
Air conditioning system service, heater core replacement, blower motor, climate control panel, refrigerant handling.
Restraints System:
Airbag system components, seat belt service, SRS warning light diagnostics.
Tune Ups:
Spark plug replacement, air filter replacement, fluid checks and top-offs, ignition timing adjustment (if applicable).
Lubrication:
Engine oil and filter change, transmission fluid change, differential fluid change, chassis lubrication points.
Engine Overhaul:
Complete engine disassembly, inspection, measurement, and reassembly to OEM specifications.
Transmission Rebuild:
Complete transmission disassembly, component replacement, and reassembly.
Brake Service:
Brake pad/shoe replacement, rotor/drum resurfacing or replacement, brake fluid flush, caliper/wheel cylinder repair.
Electrical Diagnostics:
Troubleshooting electrical circuits, wiring diagrams, component testing, diagnosing faults.
Troubleshooting:
Systematic approach to diagnosing and resolving common and complex vehicle issues.
Detail Level:
Comprehensive, from basic maintenance to advanced engine and transmission rebuilds.
Diagrams Illustrations:
Includes exploded diagrams, wiring schematics, and photographic illustrations.
Oem Specifications:
Contains OEM torque values, fuel pressure charts, compression ranges, tolerances, and data.
Oil Change Interval:
Refer to manual; typically every 3,000-5,000 miles or 6 months (whichever comes first) depending on driving conditions.
Transmission Fluid Change Interval:
Refer to manual; typically every 30,000-60,000 miles for automatic transmissions.
Coolant Change Interval:
Refer to manual; typically every 30,000-50,000 miles or 2-3 years.
Spark Plug Replacement Interval:
Refer to manual; typically every 30,000-100,000 miles depending on spark plug type.
Engine Coolant Type:
Refer to manual for Mopar OAT (Organic Acid Technology) coolant or equivalent for the specified years.
Power Steering Fluid Type:
Refer to manual for Mopar Power Steering Fluid or equivalent.
Brake Fluid Type:
Refer to manual for DOT 3 Brake Fluid.
Common Issues Engine:
Cracking of the 0331 cylinder head (on later 4.0L engines), oil filter housing leaks, distributor O-ring leaks.
Common Issues Transmission:
Internal seal leaks in automatic transmissions, wear on clutch components in manual transmissions.
Common Issues Suspension Steering:
Worn ball joints, tie rod ends, track bar bushings, and leaf spring bushings due to off-road use and age.
Common Issues Electrical:
Flickering dashboard lights, intermittent power to accessories, corroded grounds.