Engine Mechanical:
Engine assembly, disassembly, cylinder head, pistons, crankshaft, camshaft, valve train, timing, lubrication, cooling.
Engine Fuel Ignition:
Fuel injection systems (MPI), ignition systems, emission controls, diagnostics.
Transmission Automatic:
42RE, 44RE, 46RE service, repair, overhaul, troubleshooting, torque converter.
Transmission Manual:
NV3550 (if applicable to 1995 models, confirm specific application)
Transfer Case:
Selec-Trac (242), Command-Trac (231) operation, maintenance, and repair.
Axles Differentials:
Front and rear axle service, differential overhaul, axle shafts, bearings.
Suspension Front:
Independent front suspension (IFS) service, control arms, ball joints, springs, shocks, sway bar.
Suspension Rear:
Solid rear axle service, leaf springs, shocks, control arms, track bar.
Steering System:
Power steering pump, steering gear, tie rods, linkages, troubleshooting.
Braking System Front:
Disc brake service, calipers, rotors, pads, lines, ABS (if equipped).
Braking System Rear:
Drum brake service (if applicable), disc brake service, parking brake.
Electrical Charging:
Alternator, voltage regulator, battery service.
Electrical Starting:
Starter motor, ignition switch, solenoid.
Lighting System:
Headlights, taillights, interior lights, fuses, relays.
Instruments Gauges:
Dashboard cluster, warning lights, sensor calibration.
HVAC Controls:
Heater core, AC compressor, evaporator, refrigerant service, blower motor.
Body Control Modules:
Power windows, locks, mirrors, seat motors (if applicable).
Chassis Electrical:
Wiring diagrams, connectors, grounding points.
Scheduled Maintenance:
Oil change, filter replacement, fluid checks, spark plugs, belts, hoses.
Engine Rebuild:
Complete overhaul procedures, torque specifications, clearances.
Transmission Overhaul:
Step-by-step disassembly, inspection, assembly of automatic transmissions.
Brake Repair:
Pad replacement, rotor resurfacing/replacement, caliper service, bleeding.
Suspension Replacement:
Component replacement (shocks, struts, ball joints, control arms).
Electrical Troubleshooting:
Diagnostic procedures using wiring diagrams, circuit testing.
HVAC Diagnosis Repair:
Refrigerant handling, component testing, leak detection.
Body Panel Repair:
Dent removal, panel replacement, alignment.
Diagnostics Troubleshooting:
On-board diagnostics (OBD-I), common symptoms and solutions.
Depth:
Comprehensive, suitable for professional mechanics and advanced DIY enthusiasts.
Diagnostic Tools:
Includes information on necessary tools and equipment for diagnosis and repair.
Torque Specifications:
Detailed torque values for all critical fasteners.
Clearances Tolerances:
Precise measurements for engine and transmission components.
Wiring Diagrams:
Complete, detailed electrical wiring diagrams for all systems.
Engine Code 1:
4.0L Inline-6 (High Output)
Displacement 1:
3957 cc (242 cubic inches)
Bore X Stroke 1:
3.875 in x 3.563 in (98.4 mm x 90.5 mm)
Compression Ratio 1:
8.7:1
Horsepower 1:
185 hp @ 4700 rpm (approx.)
Torque 1:
220 lb-ft @ 3000 rpm (approx.)
Engine Code 2:
5.2L V8 (Magnum)
Displacement 2:
5211 cc (318 cubic inches)
Bore X Stroke 2:
3.91 in x 3.57 in (99.3 mm x 90.7 mm)
Compression Ratio 2:
8.7:1
Horsepower 2:
220 hp @ 4400 rpm (approx.)
Torque 2:
285 lb-ft @ 3200 rpm (approx.)
Fuel Delivery:
Multi-Point Fuel Injection (MPI)
Fuel Type:
Unleaded Gasoline (87 octane recommended)
Ignition Type:
Distributorless Ignition System (DIS) or Distributor type depending on specific engine variant and production date.
Oil Change Interval:
Every 3,000 to 5,000 miles or 6 months, whichever comes first (depending on driving conditions and oil type used).
Transmission Fluid Change:
Every 30,000 to 60,000 miles (refer to manual for specific recommendations based on usage).
Spark Plug Replacement:
Approx. 30,000 - 100,000 miles depending on spark plug type (e.g., copper vs. platinum).
Coolant Flush:
Every 30,000 to 60,000 miles or 2-4 years.
Engine Oil Type:
API SG or higher, SAE 10W-30 recommended for most conditions (check owner's manual for specific weight).
Engine Oil Capacity:
Approx. 5 quarts (4.7 liters) with filter for 4.0L I6; Approx. 5 quarts (4.7 liters) with filter for 5.2L V8.
Coolant Type:
Ethylene Glycol based antifreeze, 50/50 mix with distilled water.
Common Problem 1:
Cracked cylinder heads (especially on early 4.0L engines, though less common by '95).
Common Problem 2:
Transmission cooler line leaks.
Common Problem 3:
Water pump failures.
Common Problem 4:
Heater core leaks.
Common Problem 5:
Interior electrical gremlins (window motors, door locks, dashboard lights).
Suspension Components:
Ball joints, tie rod ends, sway bar links, and bushings are wear items.