Jeep Cherokee YJ XJ 1987 Repair Service Manual

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🏷️ Basic Information Identification Make: Jeep Model: Cherokee Chassis Code: XJ Platform Name: XJ Model Generation Specific Code: XJ (Second Generation, 1984-2001) Model Variant: YJ (Wrangler) and XJ (Cherokee) series, specifically referencing shared components and diagnostic procedures applicable to both for the 1987 model year. Codes Vin Engine Code 1987 4.0L Inline 6: E Vin Engine Code 1987 2.5L Inline 4: P 👋 Introduction Market Position Market Position Vehicle: The Jeep Cherokee XJ (and YJ Wrangler) represented a significant evolution in the SUV market, offering unmatched off-road capability in a more compact and car-like (for the XJ) package than traditional body-on-frame SUVs. Competitive Analysis Competitive Landscape 1987: Competed against vehicles like the Ford Bronco II, Chevrolet S-10 Blazer, and Nissan Pathfinder, but the XJ's unibody construction and legendary inline-six engine gave it a unique advantage in performance and refinement. Key Features Key Vehicle Features 1987: Unibody construction (XJ), legendary 4.0L inline-six engine option, robust solid front axle, available Selec-Trac 4WD system, compact yet capable dimensions. Manual Value Proposition Manual Target Audience: Professional technicians and experienced DIY mechanics seeking detailed, factory-accurate repair and maintenance information. Manual Completeness Statement: Provides comprehensive coverage essential for diagnosing and repairing all major mechanical and electrical systems, ensuring proper vehicle upkeep. 📋 Manual Details Coverage Areas Covered Vehicle Years: 1987 Covered Models: Jeep Cherokee (XJ) and Jeep Wrangler (YJ) Geographical Coverage: Primarily North American market specifications, but generally applicable globally for mechanical and electrical systems. Page Count Estimated Page Count: Over 1000 pages (typical for comprehensive factory service manuals of this era) Manual Type Manual Type: Factory Repair Service Manual Manual Content Focus: Repair and Service procedures, designed for technical accuracy and step-by-step guidance. Language Language: English Format Format: PDF Download 📖 Manual Coverage Systems Covered Engine Mechanical: 2.5L AMC I4 (Lightning), 4.0L AMC I6 (High Output) Engine Fuel System: Fuel injection (Renix EFI), fuel pump, injectors, fuel pressure regulator, evaporative emission control (EVAP) Engine Cooling System: Radiator, water pump, thermostat, coolant hoses, fan clutch, cooling fan Engine Ignition System: Distributor, ignition coil, spark plugs, spark plug wires, electronic ignition module Engine Lubrication System: Oil pump, oil filter, oil pan, lubrication passages Transmission Manual: AX-4, AX-5 (Chrysler) Transmission Automatic: AW4 (Aisin-Warner) 4-speed automatic Drivetrain Transfer Case: NP231 Command-Trac (part-time 2WD/4WD), NP242 Selec-Trac (full-time 2WD/4WD) Drivetrain Axles: Dana 30 front axle, Chrysler 8.25 rear axle (common on later XJs, but service info may apply), Dana 35 rear axle (common on YJ) Suspension Front: Leaf spring solid axle (XJ), Leaf spring solid axle (YJ - specific configurations) Suspension Rear: Leaf spring solid axle (XJ), Leaf spring solid axle (YJ) Steering System: Power steering pump, steering gearbox, tie rods, steering column Brake System: Front disc brakes, rear drum brakes, hydraulic system, parking brake Electrical System Charging: Alternator, voltage regulator, battery Electrical System Starting: Starter motor, starter solenoid Electrical System Lighting: Headlights, taillights, interior lights, wiring diagrams Electrical System Instruments: Dashboard gauges, warning lamps, sensors Body And Chassis: Frame, body panels, doors, hood, tailgate, interior trim HVAC System: Heating, ventilation, air conditioning (if equipped), blower motor, A/C compressor Emissions Control: Catalytic converter, oxygen sensors, EGR (Exhaust Gas Recirculation) system (where applicable) Procedures Included Routine Maintenance: Oil changes, filter replacements, fluid checks and top-offs, tire rotation Engine Diagnosis And Repair: Compression testing, cylinder head removal and installation, piston ring replacement, bearing replacement, camshaft timing Fuel System Diagnostics: Fuel pressure testing, injector flow testing, fuel pump diagnosis Cooling System Service: Flushing, leak testing, component replacement (radiator, water pump, thermostat) Ignition System Service: Spark plug and wire replacement, distributor timing adjustment, ignition coil testing Transmission Service Manual: Clutch adjustment, gearbox overhaul, synchro ring replacement Transmission Service Automatic: Fluid and filter change, torque converter replacement, valve body diagnosis Drivetrain Component Repair: U-joint replacement, axle seal replacement, differential service, transfer case overhaul Suspension Component Replacement: Leaf spring replacement, shock absorber installation, bushing replacement Steering Component Repair: Power steering pump replacement, steering gearbox adjustment/replacement, tie rod end replacement Brake System Service: Brake pad/shoe replacement, rotor/drum resurfacing/replacement, caliper/wheel cylinder overhaul, bleeding procedure Electrical Troubleshooting: Wiring diagrams interpretation, circuit testing, component diagnosis (lights, horn, wipers) Body Panel Repair And Adjustment: Door alignment, tailgate adjustment, minor dent repair guidance HVAC System Diagnosis: Leak detection, component replacement (compressor, evaporator, heater core) Troubleshooting Flowcharts: Systematic diagnostic procedures for common and uncommon issues Technical Depth Technical Depth: Comprehensive; covers basic maintenance, intermediate repairs, and advanced diagnostics and component overhauls. Diagnostic Procedures: Includes factory diagnostic trouble codes (DTCs) where applicable, pressure specifications, electrical resistance values, and pinpoint tests. Torque Specifications: Detailed torque values for all critical fasteners across various systems. Wiring Diagrams: Extensive and detailed color-coded wiring diagrams for all major electrical systems, including lighting, engine management, and accessories. 📊 Manual Specifications File Format File Format: PDF Searchability: Text-searchable PDF for quick information retrieval. Print Quality Print Quality: High-resolution scans, suitable for printing....

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Sku: 389054

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Labels: 1987 Car Cars Cherokee XJ Cherokee YJ Jeep Misc

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Description

🏷️ Basic Information

Identification

Make:

Model:

Cherokee

Chassis Code:

Platform Name:

Model Generation Specific Code:

XJ (Second Generation, 1984-2001)

Model Variant:

YJ (Wrangler) and XJ (Cherokee) series, specifically referencing shared components and diagnostic procedures applicable to both for the 1987 model year.

Codes

Vin Engine Code 1987 4.0L Inline 6:

Vin Engine Code 1987 2.5L Inline 4:

👋 Introduction

Market Position

Market Position Vehicle:

The Jeep Cherokee XJ (and YJ Wrangler) represented a significant evolution in the SUV market, offering unmatched off-road capability in a more compact and car-like (for the XJ) package than traditional body-on-frame SUVs.

Competitive Analysis

Competitive Landscape 1987:

Competed against vehicles like the Ford Bronco II, Chevrolet S-10 Blazer, and Nissan Pathfinder, but the XJ's unibody construction and legendary inline-six engine gave it a unique advantage in performance and refinement.

Key Features

Key Vehicle Features 1987:

Unibody construction (XJ), legendary 4.0L inline-six engine option, robust solid front axle, available Selec-Trac 4WD system, compact yet capable dimensions.

Manual Value Proposition

Manual Target Audience:

Professional technicians and experienced DIY mechanics seeking detailed, factory-accurate repair and maintenance information.

Manual Completeness Statement:

Provides comprehensive coverage essential for diagnosing and repairing all major mechanical and electrical systems, ensuring proper vehicle upkeep.

📋 Manual Details

Coverage Areas

Covered Vehicle Years:

Covered Models:

Jeep Cherokee (XJ) and Jeep Wrangler (YJ)

Geographical Coverage:

Primarily North American market specifications, but generally applicable globally for mechanical and electrical systems.

Page Count

Estimated Page Count:

Over 1000 pages (typical for comprehensive factory service manuals of this era)

Manual Type

Manual Type:

Factory Repair Service Manual

Manual Content Focus:

Repair and Service procedures, designed for technical accuracy and step-by-step guidance.

Language

Language:

English

Format

Format:

PDF Download

📖 Manual Coverage

Systems Covered

Engine Mechanical:

2.5L AMC I4 (Lightning), 4.0L AMC I6 (High Output)

Engine Fuel System:

Fuel injection (Renix EFI), fuel pump, injectors, fuel pressure regulator, evaporative emission control (EVAP)

Engine Cooling System:

Radiator, water pump, thermostat, coolant hoses, fan clutch, cooling fan

Engine Ignition System:

Distributor, ignition coil, spark plugs, spark plug wires, electronic ignition module

Engine Lubrication System:

Oil pump, oil filter, oil pan, lubrication passages

Transmission Manual:

AX-4, AX-5 (Chrysler)

Transmission Automatic:

AW4 (Aisin-Warner) 4-speed automatic

Drivetrain Transfer Case:

NP231 Command-Trac (part-time 2WD/4WD), NP242 Selec-Trac (full-time 2WD/4WD)

Drivetrain Axles:

Dana 30 front axle, Chrysler 8.25 rear axle (common on later XJs, but service info may apply), Dana 35 rear axle (common on YJ)

Suspension Front:

Leaf spring solid axle (XJ), Leaf spring solid axle (YJ - specific configurations)

Suspension Rear:

Leaf spring solid axle (XJ), Leaf spring solid axle (YJ)

Steering System:

Power steering pump, steering gearbox, tie rods, steering column

Brake System:

Front disc brakes, rear drum brakes, hydraulic system, parking brake

Electrical System Charging:

Alternator, voltage regulator, battery

Electrical System Starting:

Starter motor, starter solenoid

Electrical System Lighting:

Headlights, taillights, interior lights, wiring diagrams

Electrical System Instruments:

Dashboard gauges, warning lamps, sensors

Body And Chassis:

Frame, body panels, doors, hood, tailgate, interior trim

HVAC System:

Heating, ventilation, air conditioning (if equipped), blower motor, A/C compressor

Emissions Control:

Catalytic converter, oxygen sensors, EGR (Exhaust Gas Recirculation) system (where applicable)

Procedures Included

Routine Maintenance:

Oil changes, filter replacements, fluid checks and top-offs, tire rotation

Engine Diagnosis And Repair:

Compression testing, cylinder head removal and installation, piston ring replacement, bearing replacement, camshaft timing

Fuel System Diagnostics:

Fuel pressure testing, injector flow testing, fuel pump diagnosis

Cooling System Service:

Flushing, leak testing, component replacement (radiator, water pump, thermostat)

Ignition System Service:

Spark plug and wire replacement, distributor timing adjustment, ignition coil testing

Transmission Service Manual:

Clutch adjustment, gearbox overhaul, synchro ring replacement

Transmission Service Automatic:

Fluid and filter change, torque converter replacement, valve body diagnosis

Drivetrain Component Repair:

U-joint replacement, axle seal replacement, differential service, transfer case overhaul

Suspension Component Replacement:

Leaf spring replacement, shock absorber installation, bushing replacement

Steering Component Repair:

Power steering pump replacement, steering gearbox adjustment/replacement, tie rod end replacement

Brake System Service:

Brake pad/shoe replacement, rotor/drum resurfacing/replacement, caliper/wheel cylinder overhaul, bleeding procedure

Electrical Troubleshooting:

Wiring diagrams interpretation, circuit testing, component diagnosis (lights, horn, wipers)

Body Panel Repair And Adjustment:

Door alignment, tailgate adjustment, minor dent repair guidance

HVAC System Diagnosis:

Leak detection, component replacement (compressor, evaporator, heater core)

Troubleshooting Flowcharts:

Systematic diagnostic procedures for common and uncommon issues

Technical Depth

Technical Depth:

Comprehensive; covers basic maintenance, intermediate repairs, and advanced diagnostics and component overhauls.

Diagnostic Procedures:

Includes factory diagnostic trouble codes (DTCs) where applicable, pressure specifications, electrical resistance values, and pinpoint tests.

Torque Specifications:

Detailed torque values for all critical fasteners across various systems.

Wiring Diagrams:

Extensive and detailed color-coded wiring diagrams for all major electrical systems, including lighting, engine management, and accessories.

📊 Manual Specifications

File Format

File Format:

Searchability:

Text-searchable PDF for quick information retrieval.

Print Quality

Print Quality:

High-resolution scans, suitable for printing.

Binding Type

Binding Type:

N/A (Digital Download)

Paper Type

Paper Type:

N/A (Digital Download)

⚙️ Engine Specifications

Primary Engine

Engine 2.5L Amc I4 Name:

2.5 L AMC I4 (Lightning)

Engine 2.5L Amc I4 Displacement:

2463 cc (150.3 cu in)

Engine 2.5L Amc I4 Bore X Stroke:

91.1 mm x 95.3 mm (3.59 in x 3.75 in)

Engine 2.5L Amc I4 Compression Ratio:

8.8:1

Engine 2.5L Amc I4 Horsepower Est:

125 hp @ 4800 rpm

Engine 2.5L Amc I4 Torque Est:

180 lb-ft @ 2800 rpm

Engine 4.0L Amc I6 Name:

4.0 L AMC I6 (High Output)

Engine 4.0L Amc I6 Displacement:

3960 cc (242 cu in)

Engine 4.0L Amc I6 Bore X Stroke:

98.5 mm x 86.6 mm (3.88 in x 3.41 in)

Engine 4.0L Amc I6 Compression Ratio:

8.8:1

Engine 4.0L Amc I6 Horsepower Est:

177 hp @ 4700 rpm

Engine 4.0L Amc I6 Torque Est:

220 lb-ft @ 3250 rpm

Performance

Engine Management System:

Renix Electronic Fuel Injection (EFI) system for both engines.

Fuel System

Fuel Type:

Unleaded gasoline

Fuel Delivery:

Sequential Port Fuel Injection (PFI)

Fuel Pressure Spec Psi:

31-37 PSI

🔧 Transmission

Standard

Standard Transmission Type:

4-speed Automatic (AW4)

Optional

Optional Transmission Manual:

5-speed Manual (AX-4, AX-5)

Features

Automatic Transmission Gear Ratios Aw4:

1st: 2.45, 2nd: 1.45, 3rd: 1.00, 4th: 0.75, Reverse: 1.87

Manual Transmission Gear Ratios Ax5:

1st: 3.43, 2nd: 1.88, 3rd: 1.33, 4th: 1.00, 5th: 0.84, Reverse: 3.25 (Typical for AX-5, variations exist)

Automatic Transmission Fluid Type:

ATF+3 or equivalent (refer to manual for specific type)

Manual Transmission Fluid Type:

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

📐 Dimensions

Exterior

Wheelbase Xj:

101.4 inches (2576 mm)

Wheelbase Yj:

93.4 inches (2372 mm)

Length Xj:

163.8 inches (4161 mm)

Length Yj:

153.0 inches (3886 mm)

Width Xj:

69.4 inches (1763 mm)

Width Yj:

67.5 inches (1715 mm)

Height Xj:

63.7 inches (1618 mm)

Height Yj:

66.3 inches (1684 mm)

Weights

Curb Weight Xj Est 4Cyl:

3,050 - 3,200 lbs (1383 - 1451 kg)

Curb Weight Xj Est 6Cyl:

3,200 - 3,500 lbs (1451 - 1588 kg)

Curb Weight Yj Est:

2,900 - 3,300 lbs (1315 - 1497 kg)

Towing Capacity Est:

2,000 - 3,500 lbs (907 - 1588 kg), depending on engine and configuration.

Payload Capacity Est:

700 - 1000 lbs (318 - 454 kg)

Ground Clearance Xj Stock:

Approx. 8-10 inches (203-254 mm)

Ground Clearance Yj Stock:

Approx. 8-10 inches (203-254 mm)

🛡️ Safety Features

Ratings

NHTSA Ratings 1987:

Vehicle safety standards were different in 1987. Specific ratings for this model year are not directly comparable to modern standards.

Active Features

Active Safety Features:

Four-wheel drive systems enhance traction and control, particularly in adverse conditions. Robust chassis construction.

Passive Features

Passive Safety Features:

Seat belts (lap and shoulder belts for front occupants, lap belts for rear passengers), reinforced body structure, energy-absorbing steering column.

💡 Technology Features

Infotainment

Infotainment System 1987:

Basic AM/FM radio, optional cassette player, manual climate controls.

Driver Assistance

Driver Assistance Features 1987:

Limited to basic safety systems; no electronic driver aids like ABS or traction control were standard or widely available in 1987.

Connectivity

Connectivity Features 1987:

None; no provision for external connectivity or integrated communication systems.

🔧 Maintenance

Service Intervals

Oil Change Interval Miles Engine:

3,750 miles or 6 months (whichever comes first), using the correct oil viscosity.

Engine Oil Filter Replacement:

Replace at every oil change.

Air Filter Replacement Miles:

15,000 miles or 12 months.

Spark Plug Replacement Miles:

30,000 miles (for standard plugs).

Coolant Flush Interval Miles:

30,000 miles or 24 months.

Transmission Fluid Change Automatic Miles:

30,000 miles or 24 months (severe service recommendations are often shorter).

Transmission Fluid Change Manual Miles:

50,000 miles or 48 months.

Fluid Specifications

Engine Oil Viscosity 4.0L And 2.5L:

10W-30 API SF or SG grade, or 10W-40 if operating in extreme temperatures.

Engine Oil Capacity 4.0L Qts:

5.0 quarts (4.7 L) with filter.

Engine Oil Capacity 2.5L Qts:

5.0 quarts (4.7 L) with filter.

Coolant Type:

Ethylene Glycol based, 50/50 mix with distilled water.

Brake Fluid Type:

DOT 3.

Power Steering Fluid Type:

Mopar power steering fluid or Dexron III/Mercon ATF.

Known Issues

Common Issue Engine Oil Leaks 4.0L:

Rear main seal, valve cover gasket, oil pan gasket.

Common Issue Cooling System Overheating:

Partially clogged radiators, failing water pumps, or worn fan clutches can lead to overheating, especially the 4.0L engine under load.

Common Issue Electrical Ground Points:

Corroded or loose ground points can cause erratic electrical behavior, from dim lights to starting issues.

Common Issue Leaf Spring Sag:

Especially in the rear, leaf springs can sag over time, affecting ride height and load-carrying capacity.

Common Issue Exhaust Manifold Cracks 4.0L:

The factory exhaust manifold is prone to cracking due to heat cycles, leading to exhaust leaks and ticking noises.

Common Issue Transmission Aw4 Shifting Issues:

Solenoid issues or hydraulic problems can cause rough or delayed shifting.

Part Numbers

Oil Filter Part Number Common:

Wix 51515, Fram PH8A, Mopar MO-090 (or equivalent)

Air Filter Part Number Common:

Wix 42071, Fram CA2421 (or equivalent)

Spark Plug Part Number Common 4.0L:

Champion RC12LYC, NGK BPR5ES (or equivalent)

📚 Vehicle History

Brand Heritage

Jeep Brand Heritage:

Founded on military-grade utility vehicles (Willys MB in WWII), Jeep has a long-standing reputation for off-road capability and ruggedness.

Model Evolution

Cherokee Xj Introduction Year:

Cherokee Xj Evolution Highlights:

Revolutionary unibody construction in 1984. Introduction of the iconic 4.0L inline-six in 1987. Facelift and powertrain updates throughout its long production run (until 2001 in North America).

Wrangler Yj Introduction Year:

Wrangler Yj Evolution Highlights:

Replaced the CJ-7. Introduced rectangular headlights (a departure from tradition), coil springs were still absent, retaining leaf springs. The 4.0L inline-six was also introduced to the YJ in 1987.

Production

Manufacturing Location 1987:

Toledo, Ohio, USA

🏆 Awards & Recognition

Recognitions

Automotive Press Awards 1987:

The Jeep Cherokee XJ, in its early years, was widely praised for its innovation and capability, often featuring on 'Best Of' lists for SUVs and off-road vehicles.

Ratings

4X4 Of The Year Awards:

Cherokee XJ and Wrangler YJ models have historically received numerous '4x4 of the Year' accolades from various off-road publications throughout their lifecycles.

Certifications

Manual Certification:

While not a certification, this manual is an industry-standard factory service manual, providing OEM-level repair data.