Jeep Cherokee YJ XJ 1988 Repair Service Manual

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🏷️ Basic Information Identification Make: Jeep Model: Cherokee Model Codes: YJ (Wrangler chassis based, though this manual likely refers to XJ generation commonly known as Cherokee), XJ (Cherokee) Year: 1988...

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标签: 1988 Car Cars Cherokee XJ Cherokee YJ Jeep Misc

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Description

🏷️ Basic Information

Identification

Make:

Model:

Cherokee

Model Codes:

YJ (Wrangler chassis based, though this manual likely refers to XJ generation commonly known as Cherokee), XJ (Cherokee)

Year:

👋 Introduction

Market Position

Vehicle Segment:

Compact SUV/Off-road Vehicle

Key Selling Points:

Renowned off-road capability, rugged construction, practical utility, relatively simple mechanics (especially for the era)

Competitive Analysis

Competitors 1988:

Ford Bronco II, Chevrolet S-10 Blazer, Nissan Pathfinder, Toyota 4Runner

Key Features

Chassis Design:

Unibody construction (XJ generation) offering a lighter and more refined ride compared to body-on-frame SUVs

Off Road Systems:

Command-Trac part-time 4WD system, available Selec-Trac (full-time 4WD) on some models, robust suspension components

Manual Purpose

Target Audience:

Professional technicians and knowledgeable DIY enthusiasts

Manual Advantage

Diagnostic Emphasis:

Provides detailed diagnostic flowcharts and symptom-to-cause analysis essential for complex repairs

📋 Manual Details

Coverage Areas

Engine Coverage:

2.5L AMC 150 (4-cylinder), 4.0L AMC 242 (6-cylinder) - Inlines

Transmission Coverage:

AX4 (4-speed manual), AX5 (5-speed manual), AW4 (4-speed automatic), NP231 (2.72:1 Command-Trac 4WD transfer case)

Chassis Coverage:

Full chassis, suspension (leaf spring rear, coil spring front), steering, braking systems

Electrical Coverage:

Complete electrical system, wiring diagrams, diagnostics, lighting, ignition, accessories

Body Coverage:

Body panels, interior trim, doors, glass, HVAC system

Page Count

Estimated Pages:

1000+

Manual Type

Type:

Factory Repair and Service Manual

Language

Language:

English

Format

Format:

PDF Download

📖 Manual Coverage

Systems Covered

Engine Mechanics:

Engine assembly, disassembly, lubrication, cooling, fuel, ignition, emissions control systems, engine performance diagnostics

Transmission Diagnostics:

Manual and automatic transmission overhaul, clutch operation, troubleshooting and repair of AW4 electronic control

Drivetrain And Axles:

Front and rear axle assembly, propeller shafts, universal joints, differential service, 4WD system operation

Suspension And Steering:

Front coil spring suspension, rear leaf spring suspension, power steering system, wheel alignment specifications

Braking System:

Front disc brakes, rear drum brakes, power assist systems, ABS (if equipped, though rare for '88 XJ), brake component replacement and bleeding

Electrical System:

Starting and charging system, ignition system, lighting, instrumentation, power windows, locks, wipers, horn, trailer towing wiring

HVAC System:

Heating, Ventilation, and Air Conditioning (HVAC) system diagnosis and repair, refrigerant handling

Procedures Included

Preventive Maintenance:

Oil changes, filter replacements, fluid checks and changes, belt and hose inspection, tire rotation, brake inspection

Diagnostic Procedures:

Step-by-step troubleshooting guides for common and uncommon issues, DTC (Diagnostic Trouble Code) interpretation

Repair Procedures:

Detailed, illustrated procedures for component replacement, engine tune-ups, transmission rebuilds, brake jobs, suspension work

Component Rebuilds:

Complete overhaul procedures for engines, transmissions, transfer cases, and axles

Wiring Diagrams:

Comprehensive and component-specific wiring schematics for all electrical systems

Technical Depth

Depth Level:

Comprehensive (from basic maintenance to complete engine and transmission rebuilds)

Diagnostic Tools:

Includes information on using basic hand tools, specialized Chrysler/Jeep diagnostic tools of the era (e.g., OBD-I scan tools), and multimeter usage

📊 Manual Specifications

File Format

File Type:

Searchability:

Text-searchable content for efficient information retrieval

Printability:

Printable pages for offline use and easy reference

Print Quality

Image Resolution:

High-resolution for clear diagrams and illustrations

Binding Type

Binding:

N/A (Digital Download)

Paper Type

Paper Quality:

N/A (Digital Download)

⚙️ Engine Specifications

Primary Engine

Engine 1 Name:

AMC 150

Engine 1 Displacement:

2.5 Liters (150 cubic inches)

Engine 1 Configuration:

Inline 4-Cylinder

Engine 1 Fuel Delivery:

Electronic Fuel Injection (EFI)

Engine 1 Horsepower:

~112 hp @ 4800 rpm

Engine 1 Torque:

~145 lb-ft @ 2800 rpm

Engine 2 Name:

AMC 242

Engine 2 Displacement:

4.0 Liters (242 cubic inches)

Engine 2 Configuration:

Inline 6-Cylinder

Engine 2 Fuel Delivery:

Electronic Fuel Injection (EFI)

Engine 2 Horsepower:

~173 hp @ 4700 rpm

Engine 2 Torque:

~220 lb-ft @ 3200 rpm

Fuel System

Fuel Type:

Unleaded Gasoline

Fuel Pump Pressure:

31-39 PSI (for EFI systems)

🔧 Transmission

Standard

Transmission 1 Type:

AX5 (5-speed Manual)

Optional

Transmission 2 Type:

AW4 (4-speed Automatic)

Transmission 3 Type:

AX4 (4-speed Manual - less common)

Features

Transfer Case:

NP231 (Command-Trac 2.72:1 ratio) or NP242 (Selec-Trac full-time 4WD option)

Fluid Specifications

Aw4 Fluid Type:

ATF+3 or equivalent (Dexron II/III compatible)

Ax5 Fluid Type:

API GL-4, SAE 75W-90 or 80W-90 Gear Oil

📐 Dimensions

Exterior

Wheelbase:

104.4 inches (2652 mm)

Length:

167.5 inches (4255 mm)

Width:

69.4 inches (1763 mm)

Height:

65.7 inches (1669 mm)

Weights

Curb Weight:

Approx. 3100-3400 lbs (1406-1542 kg) depending on configuration

Gross Vehicle Weight Rating:

Approx. 4600-4800 lbs (2087-2177 kg)

Cargo

Cargo Volume Behind Rear Seat:

~32.5 cubic feet

Cargo Volume With Rear Seat Folded:

~72.1 cubic feet

🛡️ Safety Features

Ratings

NHTSA Rollover Resistance:

1.14 (4-star rating, indicates moderate to high risk)

Active Features

Braking System:

Front disc, Rear drum. Power-assisted. ABS was not standard or widely available in 1988.

Passive Features

Seat Belts:

Lap and shoulder belts, manual adjusters

Rollover Protection:

Reinforced unibody structure, designed for moderate off-road use.

💡 Technology Features

Infotainment

Audio System:

AM/FM stereo radio with cassette player, optional premium sound system

Speakers:

Typically 4 speakers, with optional premium systems offering more

Driver Assistance

Not standard, very limited availability, manual will cover braking system diagnostics without ABS.

🔧 Maintenance

Service Intervals

Oil Change Interval:

Every 3,000 miles or 3 months

Transmission Fluid Change Interval:

Every 30,000-60,000 miles for automatic (AW4), consult manual for manual transmission

Coolant Flush Interval:

Every 2 years or 30,000 miles

Fluid Specifications

Engine Oil Type:

API SF/CD, SAE 10W-30 (check owner's manual for specific viscosity based on temperature)

Coolant Type:

Mopar Antifreeze/Coolant (Ethylene Glycol based) - Green

Brake Fluid Type:

DOT 3 Hydraulic Brake Fluid

Power Steering Fluid Type:

Mopar Power Steering Fluid or Dexron II/III ATF

Known Issues

Common Issue 1:

Cracked cylinder heads (particularly on early 4.0L engines, though less prevalent in '88 models compared to later ones)

Common Issue 2:

Transmission cooler line leaks (AW4)

Common Issue 3:

Rust formation on body panels, frame (though unibody less prone than body-on-frame), and fender flares

Common Issue 4:

Electrical gremlins, particularly with grounds and aged wiring harnesses

Common Issue 5:

Worn-out bushings and ball joints due to age and off-road use

📚 Vehicle History

Brand Heritage

Jeep Legacy:

Roots in military vehicles, established reputation for off-road prowess since World War II.

Model Evolution

Xj Generation Introduction:

First introduced for the 1984 model year, revolutionizing the SUV market with its compact size and unibody construction.

Yj Generation Introduction:

The YJ Wrangler was introduced for 1987, notable for its move to leaf springs and the rectangular headlights that differentiated it from the CJ series.

Production

Manufacturing Location:

Toledo, Ohio, USA

Jeep Ownership History:

In 1988, Jeep was owned by American Motors Corporation (AMC), which was later acquired by Chrysler in 1987.

🏆 Awards & Recognition

Recognitions

Off Road Magazine Awards:

Consistently rated highly for off-road capability by automotive publications throughout its run.

Popular Mechanics Award:

The XJ Cherokee was recognized by Popular Mechanics as a 'Car of the Year' in its early years for its innovative design and utility.