Powertrain:
Covers engines (specific types detailed below), clutch systems, transmissions (automatic and manual, detailed in sections 21 and 21-S), and transfer cases, including removal, installation, overhaul, and troubleshooting.
Chassis:
Detailed coverage of front and rear suspension, steering systems, braking systems (including ABS if applicable for the model year), wheels, and tires.
Electrical:
Comprehensive electrical system coverage, including wiring diagrams, component testing, troubleshooting, and repair for various circuits (lighting, ignition, fuel, accessories, etc.).
Body:
Includes procedures for body components, frame, bumpers, as well as heating, ventilation, and air conditioning (HVAC) systems and emission control systems.
Routine Maintenance:
Covers lubrication, fluid changes, filter replacements, and general upkeep as outlined in the 'Lubrication and Maintenance' section.
Diagnostic Troubleshooting:
Provides diagnostic flowcharts, symptom-based troubleshooting guides, and specific procedures for identifying and resolving mechanical and electrical faults.
Repair Overhaul:
Detailed step-by-step instructions for disassembly, inspection, repair, and reassembly of major components, including engines, transmissions, axles, and suspension parts.
Electrical Diagnostics:
Includes specific procedures for testing electrical components, circuits, and diagnosing issues using multimeter readings and wiring diagrams.
Depth:
Comprehensive, covering everything from basic maintenance and fluid checks to in-depth mechanical and electrical diagnostics, component overhaul, and repair procedures. Suitable for professional technicians and serious DIY enthusiasts.
Type:
4.0L Inline 6-Cylinder (High Output)
Engine Code:
MPI (Multi-Point Fuel Injection)
Displacement:
242 cubic inches (3.960 liters)
Horsepower Approx:
185-190 hp @ 4700 rpm
Torque Approx:
220-230 lb-ft @ 3000 rpm
Fuel System:
Multi-Point Fuel Injection (MPI)
Engine Code:
MPI (Multi-Point Fuel Injection)
Displacement:
318 cubic inches (5.216 liters)
Horsepower Approx:
220-230 hp @ 4400 rpm
Torque Approx:
295-300 lb-ft @ 3200 rpm
Fuel System:
Multi-Point Fuel Injection (MPI)
Type:
4-speed Automatic Transmission (e.g., Chrysler 42RE for 4.0L, 44RE for 5.2L V8)
Type:
No manual transmission was offered for the 1993 ZJ Grand Cherokee in North America.
Transfer Case:
Selec-Trac (full-time 4WD with 2WD option) or Command-Trac (part-time 4WD).
NHTSA Rollover Resistance:
4 out of 5 stars (for 1993 model year vehicles, specific to SUV rollover ratings of the era)
ABS:
Available Anti-lock Braking System (ABS) on rear wheels or four wheels, depending on trim and options.
Airbags:
Driver-side airbag standard.
Seatbelts:
Front and rear seat belts. Lap and shoulder belts for front occupants, lap belts for rear occupants in some configurations.
Audio System:
Factory AM/FM stereo with cassette player, optional CD player, and available premium audio systems (e.g., Infinity).
Climate Control:
Manual or optional automatic climate control (ACC) system.
Cruise Control:
Standard on most trims.
Data Port:
OBD-I diagnostic port (pre-OBD-II standard).
Oil Change:
Every 3,000 - 5,000 miles (refer to manual for specific engine and oil type recommendations).
Transmission Fluid Change:
Every 30,000 - 60,000 miles, or as recommended by the manual based on driving conditions.
Coolant Change:
Every 30,000 - 50,000 miles or 2-3 years.
Spark Plugs:
Approximately 30,000 - 60,000 miles, depending on plug type (e.g., platinum).
Engine Oil:
API Certified SAE 10W-30 or 10W-40 (check manual for exact viscosity based on temperature).
Transmission Fluid:
ATF+3 (Chrysler Mopar) for 42RE/44RE transmissions.
Coolant:
Ethylene Glycol based coolant, typically a 50/50 mix with distilled water.
Brake Fluid:
DOT 3 brake fluid.
Common Failures 4.0L:
Cracked cylinder head (especially earlier versions), oil filter adapter O-ring leaks, intake manifold gasket leaks, rear main seal leaks.
Common Failures 5.2L V8:
Intake manifold gasket leaks, valve cover gasket leaks, oil pressure sensor failures.
Common Failures Transmission:
Solenoid failures, torque converter clutch issues, governor pressure issues, worn overdrive band.
Common Failures Electrical:
Instrument cluster failure (dead gauges), window regulator failures, various sensor failures (e.g., Crankshaft Position Sensor).
Common Failures Suspension Steering:
Worn ball joints, tie rod ends, track bar bushings, leaky power steering pumps/hoses.
Jeep Legacy:
Jeep has a long history of producing rugged, off-road capable vehicles, originating from its World War II roots. The Grand Cherokee represented a strategic expansion into the burgeoning SUV market with a focus on comfort and luxury.
Zj Generation Introduction:
The ZJ generation was introduced for the 1993 model year, marking Jeep's entry into the mid-size luxury SUV segment.
Zj Generation Years:
1993-1998
Manufacturing Plant:
Jefferson North Assembly Plant in Detroit, Michigan.
