🏷️ Basic Information

Make:

Jeep

Model:

Wrangler, Cherokee (XJ), Grand Cherokee (ZJ)

Product Name:

Best 1991-1993 Jeep Parts Manual WRANGLER CHEROKEE Grand CHEROKEE

Production Years Covered:

1991, 1992, 1993

👋 Introduction

Target Audience:

Jeep enthusiasts, DIY mechanics, restoration shops, and parts suppliers needing precise OEM part identification for 1991-1993 models.

Value Proposition:

Offers comprehensive OEM part number information, crucial for sourcing correct replacements in an era where OEM availability may be limited. Essential for maintaining originality and ensuring proper fitment.

Manual Utility:

Enables accurate ordering of parts, aids in understanding vehicle assembly, and is invaluable for restoration projects.

📋 Manual Details

Models Included:

Jeep Wrangler (YJ), Jeep Cherokee (XJ), Jeep Grand Cherokee (ZJ)

Estimated Page Count:

Approximately 800-1200 pages (typical for comprehensive parts catalogs of this era)

Manual Type:

Parts Manual / Catalog

Language:

English

Format:

Print (likely a compilation of OEM parts catalogs)

📖 Manual Coverage

Major Systems And Components:

Engine (including specific variants), Drivetrain (transfer case, differentials, axles), Transmission (manual & automatic), Suspension (front & rear), Steering, Brakes (front & rear), Fuel System, Cooling System, Exhaust System, Electrical System (wiring harnesses, ignition, lighting, accessories), Interior (seats, trim, dashboard), Exterior (body panels, bumpers, glass, doors, fenders), HVAC System, Wheels and Tires, Hardware and Fasteners

Replacement Parts Identification:

Identification and sourcing of all serviceable OEM replacement parts.

Level Of Detail:

High. Provides exploded views, part numbers, and component relationships for accurate identification and ordering.

📊 Manual Specifications

Print Quality:

Professional print quality, comparable to original OEM documentation. Clear illustrations and legible text.

Binding Type:

Stapled or perfect bound (typical for aftermarket reproductions or OEM compilations).

Paper Type:

Durable paper stock suitable for workshop environments.

⚙️ Engine Specifications

Engine Code:

2.5L Inline-4 (AMC 150)

Displacement:

2.5 Liters (150 cubic inches)

Horsepower Peak:

Approximately 121 hp @ 4600 rpm (for 1991-1993 models)

Torque Peak:

Approximately 150 lb-ft @ 2800 rpm (for 1991-1993 models)

Engine Code:

4.0L Inline-6 (AMC 242)

Displacement:

4.0 Liters (242 cubic inches)

Horsepower Peak:

Approximately 180-190 hp @ 4500-4700 rpm (depending on year/model)

Torque Peak:

Approximately 220-230 lb-ft @ 2500-3000 rpm (depending on year/model)

Fuel Delivery:

Electronic Fuel Injection (EFI), Sequential Multi-Port Fuel Injection (MPI)

Octane Rating:

87 octane (minimum recommended)

ECU Type:

Chrysler/Jeep proprietary engine control units (ECU) or Powertrain Control Modules (PCM)

🔧 Transmission

Transmission Type:

5-Speed Manual (e.g., AX-5, NV3550 variants)

Transmission Type:

3-Speed Automatic (e.g., TF-999)

Transmission Type:

4-Speed Automatic (e.g., AW4, 42RE, 44RE)

Transfer Case Yj Xj:

Command-Trac (NV231), Selec-Trac (NV242), or NP207

Transfer Case Zj:

Selec-Trac (NV242), Full-Time 4WD (e.g., NP249)

Manual Transmission Fluid:

Refer to manual for specific NV/AX part numbers and fluid types (e.g., GL-3 or GL-4 gear oil).

Automatic Transmission Fluid:

ATF+3 or ATF+4 (depending on specific unit; manual will clarify initial fill)

📐 Dimensions

Wheelbase:

93.4 inches (YJ Wrangler)

Wheelbase:

101.4 inches (XJ Cherokee)

Wheelbase:

110 inches (ZJ Grand Cherokee)

Curb Weight Approx:

3,100 - 3,500 lbs (YJ Wrangler, varies by configuration)

Curb Weight Approx:

3,300 - 3,800 lbs (XJ Cherokee, varies by configuration)

Curb Weight Approx:

4,000 - 4,500 lbs (ZJ Grand Cherokee, varies by configuration)

Cargo Volume Behind Rear Seat:

Approximately 17.1 cubic feet (YJ Wrangler)

Cargo Volume Behind Rear Seat:

Approximately 30.4 cubic feet (XJ Cherokee)

Cargo Volume Behind Rear Seat:

Approximately 37.2 cubic feet (ZJ Grand Cherokee)

🛡️ Safety Features

Crash Test Data:

Limited formal government crash test data available for these specific years from sources like NHTSA. Early SUVs often had less rigorous testing compared to modern standards.

Braking System:

Front: Disc Brakes; Rear: Drum Brakes (standard on YJ/XJ); Front & Rear Disc Brakes (optional/standard on higher trims of ZJ).

Anti Lock Brakes:

Optional on select models, typically rear-wheel ABS initially, later with 4-wheel ABS availability on ZJ.

Airbags:

Driver-side airbag became standard on most Jeep models during this period, particularly on the ZJ Grand Cherokee. Passenger airbags were not common.

Seat Belts:

Front and rear seat belts. Lap and shoulder belts for front occupants. Lap belts for rear center.

💡 Technology Features

Audio System:

Basic AM/FM radio, cassette player, optional CD player. Limited speaker configurations.

Audio System:

Higher-end optional audio systems, including premium sound packages with more speakers and amplifier. Cassette and CD players were common.

Cruise Control:

Optional on most models, standard on higher trim levels of Grand Cherokee.

Auxiliary Inputs:

Not applicable for this era; no standard auxiliary or USB inputs.

🔧 Maintenance

Oil Change Interval:

Typically 3,000 miles or 3 months for conventional oil; 5,000 miles for synthetic. Consult manual for exact recommendation.

Tire Rotation Interval:

Every 5,000 - 7,500 miles.

Transmission Fluid Change:

Automatic: 30,000 - 50,000 miles (depending on use); Manual: Check fluid condition, typically longer intervals.

Engine Oil Type:

10W-30 or 10W-40 (check manual for specific engine variant and ambient temperature recommendations)

Coolant Type:

Chrysler Mopar Antifreeze/Coolant (Green) or equivalent ethylene glycol-based coolant. Check manual for specific type and capacity.

Brake Fluid Type:

DOT 3 brake fluid.

Yj Xj Common Problems:

Front axle universal joint wear, rear main seal leaks, heater core leaks, rust on floor pans and frame rails, aging rubber bushings, thermostat housing leaks (4.0L), vacuum hose degradation.

Zj Common Problems:

Transfer case chain stretch (NP249), heater control valve failure, window regulator issues, CPS (Crankshaft Position Sensor) failure on 4.0L, radiator leaks, front suspension component wear (ball joints, tie rods).

Oil Filter Examples:

Wix 51515, Fram PH8A, Purolator L30001 (verify exact fitment for specific engine).

Air Filter Examples:

Wix 42887, Fram CA4866, Purolator A33131 (verify exact fitment for specific engine).

📚 Vehicle History

Jeep Legacy:

Jeep has a long and storied history originating from World War II military vehicles, renowned for off-road capability and durability.

Wrangler Yj:

The YJ generation (1987-1995) introduced coil springs and wider track for improved on-road manners while retaining iconic Jeep styling. This era saw the controversial switch to square headlights.

Cherokee Xj:

The XJ Cherokee (1984-2001) was a revolutionary compact SUV, pioneering unibody construction in its class. It offered excellent off-road prowess and a practical package.

Grand Cherokee Zj:

The ZJ Grand Cherokee (1993-1998) was Jeep's first mid-size luxury SUV, competing with models like the Explorer and Blazer. It emphasized comfort, refinement, and more powerful engine options.

Manufacturing Plants:

Primary manufacturing locations included Toledo, Ohio, USA.

🏆 Awards & Recognition

Motor Trend SUV Of The Year:

Jeep Cherokee (XJ) was Motor Trend's SUV of the Year in 1987.

Four Wheeler Best SUV:

The Grand Cherokee (ZJ) was highly regarded by off-road publications for its capability, often receiving accolades in 'best SUV' categories.

Consumer Satisfaction:

These models are known for their durability and off-road prowess, which contribute to enduring owner satisfaction despite some common aging vehicle issues.