🏷️ Basic Information

Make:

Jeep

Model:

Grand Cherokee

Generation:

WJ

Model Year:

1994

Chassis Code:

WJ

👋 Introduction

Segment:

Mid-size Luxury SUV

Target Audience:

Owners seeking comprehensive DIY repair knowledge or professional mechanics needing official service data.

Competitors 1994:

Ford Explorer, Chevrolet Blazer, Toyota 4Runner, Nissan Pathfinder, Land Rover Discovery.

Unique Selling Points Vehicle:

Robust 4x4 capability, upscale interior for its class, strong towing capacity.

Manual Value Proposition:

Provides access to the same in-depth repair information used by authorized Jeep dealerships, empowering owners to perform complex maintenance and repairs.

📋 Manual Details

Diagnostic Procedures:

Extensive troubleshooting guides, diagnostic charts, and wiring diagrams for all electrical systems.

Repair Procedures:

Detailed step-by-step instructions for virtually every repair, from routine maintenance to complete engine and transmission overhauls.

Maintenance Schedules:

Comprehensive scheduled maintenance intervals for all major components and fluids.

Estimated Pages:

Over 1500

Type:

Factory Service Manual / Workshop Manual

Primary Language:

English

Digital Format:

PDF (typically)

Print Quality:

High-resolution scans suitable for printing, clear diagrams and text.

📖 Manual Coverage

Engine Mechanical:

Engine assembly, disassembly, lubrication, cooling, fuel, ignition, emissions, and performance tuning.

Engine Electrical:

Starter, alternator, ignition system, engine control module (ECM) diagnostics and repair, sensors, and actuators.

Transmission Drivetrain:

Automatic transmission (e.g., 45RFE, 42RE) overhaul, diagnostics, shifting mechanisms, and transfer case operation.

Suspension Steering:

Front and rear suspension components, steering gear, power steering system, wheel alignment specifications.

Brakes:

Hydraulic system, ABS diagnostics, brake pad/rotor replacement, caliper service, parking brake.

Electrical Body:

Lighting, power windows, door locks, seats, mirrors, HVAC blower motor, wiper system, body control module (BCM).

Electrical Chassis:

Instrument cluster, audio system, navigation (if equipped), trailer wiring, fuse box diagrams.

Body Exterior:

Body panel removal and installation, door hinge service, bumper replacement, glass replacement.

Body Interior:

Interior trim panel removal, seat assembly, headliner, dashboard disassembly.

HVAC:

Air conditioning system diagnostics, refrigerant handling, heater core replacement, blower motor, climate control module.

Tune Up:

Spark plug replacement, air filter changes, fuel filter service, fluid checks and top-offs.

Troubleshooting:

System-specific diagnostic flowcharts for identifying and resolving common and uncommon problems.

Engine Rebuild:

Complete engine teardown, component inspection, measurement specifications, and reassembly instructions.

Transmission Repair:

Detailed procedures for transmission disassembly, clutch pack replacement, valve body servicing, and torque converter installation.

Brake Service:

Front and rear brake pad replacement, rotor resurfacing/replacement, brake fluid flush and bleed.

Suspension Work:

Ball joint replacement, tie rod end service, shock absorber/strut replacement, control arm bushings.

Electrical Diagnosis:

Wiring diagrams for all circuits, pinpoint tests for electrical faults, sensor testing procedures.

HVAC Service:

Refrigerant recovery/recharge, leak detection, compressor replacement, evaporator/heater core replacement.

Timing Belt Chain Replacement:

Detailed instructions for timing chain inspection and replacement (depending on engine).

Body Panel Replacement:

Instructions for removing and installing fenders, doors, hoods, and liftgates.

Exhaust System Repair:

Catalytic converter replacement, muffler and pipe repairs/replacement.

Depth:

Factory-level diagnostic and repair information, suitable for professional technicians and advanced DIYers.

Diagnostic Tools:

References to common diagnostic tools and procedures, including scan tool data interpretation.

Torque Specifications:

Precise torque values for all critical fasteners and assembly points.

Measurement Specifications:

Detailed specifications for component wear limits, clearances, and tolerances.

Wiring Diagrams:

Comprehensive, color-coded wiring schematics for all vehicle systems.

📊 Manual Specifications

Document Type:

Service Manual

Image Resolution:

High (typically 300 dpi or higher for printable versions)

Text Searchability:

Searchable PDF text for quick information retrieval.

Physical Manual:

Likely spiral-bound or perfect-bound for ease of use on a workbench.

Physical Manual:

Durable paper stock to withstand workshop conditions.

⚙️ Engine Specifications

Engine Code Example:

4.0L Inline-6 (e.g., AMC 242)

Displacement 4.0L:

3957 cc (242 cubic inches)

Horsepower 4.0L:

Approximately 185 hp @ 4600 rpm (varies slightly by year/spec)

Torque 4.0L:

Approximately 220 lb-ft @ 3000 rpm (varies slightly by year/spec)

Engine Code Example V8:

4.7L V8 (e.g., PowerTech)

Displacement 4.7L:

4701 cc (287 cubic inches)

Horsepower 4.7L:

Approximately 220-235 hp @ 4800 rpm (varies by year/spec)

Torque 4.7L:

Approximately 275-290 lb-ft @ 3200 rpm (varies by year/spec)

Induction:

Sequential Multi-Port Fuel Injection (MPI)

Fuel Type:

Unleaded Gasoline

🔧 Transmission

Transmission Type Std:

4-speed Automatic Transmission (e.g., 42RE for 4.0L, 45RFE for 4.7L V8)

Transmission Type Opt:

None typically offered for this generation, automatic was standard.

Drive Type:

4WD (Four-Wheel Drive) standard on most models, with various transfer case options (e.g., NV242, NV247).

Transmission Fluid Spec 42Re:

ATF+3 or ATF+4

Transmission Fluid Spec 45Rfe:

ATF+4

📐 Dimensions

Length:

Approximately 181.5 inches

Width:

Approximately 71.0 inches

Height:

Approximately 66.0 inches

Wheelbase:

Approximately 104.7 inches

Curb Weight Approx:

4,200 - 4,800 lbs (depending on engine and options)

Cargo Volume Behind Rear Seat:

Approximately 37.0 cubic feet

Cargo Volume With Rear Seat Folded:

Approximately 76.0 cubic feet

🛡️ Safety Features

NHTSA Front Impact Driver:

Not rated for 1994 models according to modern standards (pre-dates comprehensive testing as we know it).

NHTSA Front Impact Passenger:

Not rated for 1994 models according to modern standards.

ABS:

Anti-lock Braking System (ABS) available, often standard on higher trims.

Traction Control:

Traction control systems (e.g., 'Trak-Lok') available on some models.

Airbags:

Driver and passenger front airbags standard.

Seatbelts:

Three-point seatbelts for all occupants, front seatbelt pretensioners.

💡 Technology Features

Audio System:

Factory AM/FM stereo with CD player or cassette tape, optional premium audio systems (e.g., Infinity).

Navigation:

Optional factory navigation system available on select models.

Cruise Control:

Standard electronic cruise control.

Remote Keyless Entry:

Optional remote keyless entry system.

🔧 Maintenance

Oil Change Interval Miles:

Every 3,000-7,500 miles (depending on oil type and driving conditions as per manual).

Air Filter Replacement Miles:

Every 15,000-30,000 miles or as needed.

Spark Plug Replacement Miles 4.0L:

Approximately 100,000 miles (with modern spark plugs like platinum/iridium).

Transmission Fluid Change Miles:

Every 30,000-60,000 miles (depending on driving conditions).

Engine Oil Type:

SAE 5W-30 or 10W-30 (check manual for specific viscosity based on climate)

Coolant Type:

Mopar Antifreeze/Coolant (Ethylene Glycol based) or equivalent, mixed 50/50 with distilled water.

Brake Fluid Type:

DOT 3

Common Issue Heater Core:

Heater core leaks are a known issue, often requiring dashboard removal for replacement.

Common Issue Cooling System:

Radiator leaks and coolant hose failures can occur with age.

Common Issue Transmission Control:

Intermittent shifting issues or 'limp mode' can sometimes indicate problems with the transmission control module or solenoids.

Common Issue Rear Main Seal:

Rear main engine seal leaks are not uncommon on higher mileage examples.

📚 Vehicle History

Jeep Legacy:

Jeep's reputation for ruggedness, off-road capability, and utilitarian design since WWII.

Wj Introduction:

The WJ generation (1999-2004) represented a significant redesign from the preceding ZJ Grand Cherokee, moving towards a more refined, upscale, and globally-oriented SUV. *Note: The provided manual lists 1994, which aligns with the ZJ generation, not WJ. This is a critical discrepancy.*

Manufacturing Location:

Detroit, Michigan, USA (for WJ generation).

Production Years Wj:

1999-2004

Discrepancy Note:

The product name 'Jeep Grand Cherokee WJ 1994 Factory Service Repair Manual' contains a contradiction. The WJ designation refers to the second generation (1999-2004), while 1994 is within the ZJ generation (1993-1998). This manual is likely for the ZJ Grand Cherokee.

🏆 Awards & Recognition

Motor Trend SUV Of The Year:

Grand Cherokee (ZJ) was Motor Trend's SUV of the Year for 1993. The WJ generation also received accolades but none for 1994 specifically.

Consumer Reports Reliability:

Reliability ratings for the ZJ generation (which 1994 falls into) varied, with the 4.0L engine generally considered more robust than the early V8s.

Iso Certification:

Manufacturing facilities adhere to automotive industry quality standards.