1999 Jeep Wrangler TJ Service Repair Manual

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🏷️ Basic Information Identification Make: Jeep Model: Wrangler Model Code: TJ Year: 1999 Generation Jeep Wrangler Tj Generation: Second Generation (1997-2006) 👋 Introduction Market Position Target Audience: Professional mechanics and...

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Description

🏷️ Basic Information

Identification

Make:

Model:

Wrangler

Model Code:

Year:

Generation

Jeep Wrangler Tj Generation:

Second Generation (1997-2006)

👋 Introduction

Market Position

Target Audience:

Professional mechanics and DIY enthusiasts with basic to intermediate mechanical knowledge.

Competitive Analysis

Value Proposition:

Provides official OEM technical data and repair procedures, enabling accurate and efficient servicing of the 1999 Jeep Wrangler TJ.

Key Features

Official Source:

Derived from factory/original workshop manuals.

Accessibility:

Instant digital download for immediate access.

Versatility:

Compatible with various devices, allowing printing and digital copying.

Lifetime Support:

Lifetime protection policy for lost or damaged files.

📋 Manual Details

Coverage Areas

Coverage Years:

Coverage Models:

Jeep Wrangler TJ

Specific Engines Covered:

4.0L Inline-6 (AMC 242)

Page Count

Estimated Page Count:

Extensive (Actual count not provided, but typical for factory service manuals)

Manual Type

Type:

Factory/Official Service Repair Workshop Manual

Language

Language:

English

Format

Format:

Digital PDF Download

📖 Manual Coverage

Systems Covered

Engine:

Comprehensive coverage of the 4.0L AMC 242 engine, including diagnosis, repair, overhaul, specifications, and component testing.

Fuel System:

Fuel injection system diagnosis, components, pressure specifications, and testing procedures.

Lubrication Cooling System:

Oil pump, lubrication schedules, cooling system diagnosis, radiator, water pump, thermostat, and coolant specifications.

Intake Exhaust System:

Intake manifold, exhaust manifold, catalytic converter, muffler, and emissions control system information.

Transmission:

Coverage for both manual (AX-5, NV3550) and automatic (30RH) transmissions, including removal, installation, overhaul, and fluid specifications.

Drivetrain:

Transfer case operation and servicing, driveshafts, U-joints, axles (Dana 30 front, Dana 35 rear), and differentials.

Steering System:

Power steering system diagnosis, components, fluid specifications, and steering linkage.

Suspension System:

Front and rear suspension components, including coil springs, shock absorbers, control arms, and bushings.

Brakes:

Front disc brakes, rear drum brakes (or optional rear disc), brake system diagnosis, components, fluid specifications, and bleeding procedures.

Electrical System:

Complete electrical schematics, wiring diagrams, component testing, charging system, starting system, ignition system, lighting, and accessories.

Bodywork:

Body panel removal and installation, doors, hood, tailgate, interior trim, and exterior components.

Procedures Included

Routine Maintenance:

Oil changes, filter replacements, fluid checks and top-offs, tire rotations, and general inspection procedures.

Tune Ups:

Spark plug replacement, ignition timing, and associated adjustments.

Engine Repair:

Engine overhaul, head gasket replacement, piston and ring replacement, bearing service, and valve train adjustments.

Transmission Repair:

Complete rebuild procedures for both manual and automatic transmissions, clutch replacement.

Axle Differential Service:

Differential fluid changes, bearing adjustments, and seal replacements.

Brake System Repair:

Brake pad/shoe replacement, caliper/wheel cylinder service, rotor/drum machining or replacement, and brake line repair.

Electrical Troubleshooting:

Diagnostic procedures for electrical faults, including using wiring diagrams to trace circuits.

Suspension Component Replacement:

Shock absorber replacement, spring replacement, ball joint service, and steering component replacement.

Body Panel Repair Replacement:

Procedures for removing, installing, and repairing body panels.

Technical Depth

Depth:

Comprehensive, covering everything from basic maintenance to major component rebuilds and advanced diagnostics.

Documentation Style:

Factory specifications, step-by-step instructions, exploded diagrams, charts, and illustrations.

📊 Manual Specifications

File Format

Format:

PDF (Portable Document Format)

Searchability:

Typically searchable text within PDF for quick information retrieval.

Print Quality

Printability:

Yes, fully printable.

Diagram Clarity:

High clarity diagrams for disassembly and reassembly.

Binding Type

Digital Binding:

N/A (Digital download)

Paper Type

Digital Paper Type:

N/A (Digital PDF)

⚙️ Engine Specifications

Primary Engine

Engine Type:

Inline-6 Cylinder, Overhead Valve (OHV)

Engine Code:

AMC 242 (4.0L)

Displacement:

242 cubic inches (3.96 Liters)

Performance

Horsepower:

Approx. 182 hp @ 4,600 rpm

Torque:

Approx. 220 lb-ft @ 3,200 rpm

Bore X Stroke:

3.875 in x 3.570 in (98.4 mm x 90.7 mm)

Compression Ratio:

8.8:1

Fuel System

Fuel Delivery:

Sequential Multi-Port Fuel Injection (MPI)

Recommended Fuel:

87 Octane Unleaded Gasoline

Fuel Pressure:

Refer to manual for exact specifications (typically 31-39 PSI)

Lubrication

Oil Capacity:

6 US Quarts (5.7 Liters) with filter

Recommended Oil Viscosity:

SAE 10W-30 (refer to manual for seasonal variations)

Cooling System

Coolant Capacity:

Approx. 11.5 US Quarts (10.9 Liters)

Coolant Type:

Ethylene Glycol based antifreeze

🔧 Transmission

Standard

Manual Transmission Options:

AX-5 (4-speed manual), NV3550 (5-speed manual)

Optional

Automatic Transmission Option:

30RH (3-speed automatic)

Features

Transfer Case:

NV231 (Command-Trac part-time four-wheel drive)

Fluid Specs

Manual Transmission Fluid:

Refer to manual for specific fluid type (e.g., Mopar Manual Transmission Lubricant or equivalent)

Automatic Transmission Fluid:

ATF+4 (or Mopar ATF+3, refer to manual for precise specification)

📐 Dimensions

Exterior

Wheelbase:

93.4 inches (2372 mm)

Overall Length:

151.3 inches (3843 mm)

Overall Width:

66.5 inches (1689 mm)

Overall Height:

70.2 inches (1783 mm) (soft top)

Weights

Curb Weight:

Approx. 3,000 - 3,300 lbs (1361 - 1497 kg) depending on configuration

Gross Vehicle Weight Rating:

Approx. 4,300 lbs (1950 kg)

Tires Wheels

Standard Tire Size:

215/75R15

Wheel Bolt Pattern:

5 x 4.5 inches (114.3 mm)

🛡️ Safety Features

Ratings

NHTSA Front Impact Rating:

Not explicitly rated for this model year in the same way modern vehicles are, but generally considered robust for its class.

Active Features

Anti Lock Brakes:

Optional on rear wheels, standard on front.

Passive Features

Airbags:

Driver and passenger front airbags.

Rollover Protection:

Factory-installed sport bar (roll cage) as standard.

💡 Technology Features

Infotainment

Audio System:

Factory AM/FM/Cassette or optional CD player. Basic speaker setup.

Driver Assistance

Traction Control:

Not available on 1999 models.

Connectivity

Connectivity Features:

Limited to basic audio connectivity.

🔧 Maintenance

Service Intervals

Oil Change Interval:

Every 3,000 miles or 3 months, whichever comes first (under normal driving conditions).

Transmission Fluid Change Interval:

Automatic: Every 30,000-60,000 miles. Manual: As needed, or every 60,000 miles.

Differential Fluid Change Interval:

Every 30,000-60,000 miles, especially if used for off-roading.

Fluid Specifications

Brake Fluid Type:

DOT 3

Power Steering Fluid Type:

ATF+4 or Mopar Power Steering Fluid (refer to manual)

Known Issues

Common Problems 1999 Tj:

Oil filter housing leaks, radiator issues (cracks), exhaust manifold cracks (4.0L), interior electronics gremlins, clutch wear (manual transmissions), track bar wear.

Part Numbers

Oil Filter Part Number Example:

Refer to manual for exact OEM part number (e.g., Mopar MO-090 or equivalent like Wix 51515)

Air Filter Part Number Example:

Refer to manual for exact OEM part number (e.g., Mopar PA4505 or equivalent like Fram CA8323)

📚 Vehicle History

Brand Heritage

Jeep Legacy:

Continuation of the Jeep Wrangler lineage, known for its off-road capability and open-air design.

Model Evolution

Tj Introduction:

Introduced for the 1997 model year, replacing the YJ. The TJ brought significant upgrades, including coil springs for all four wheels, contributing to improved ride quality and articulation.

1999 Model Year Updates:

Minor refinements often occurred, but the core design remained consistent with the early TJ generation. The 4.0L engine was the primary powerplant.

Production

Manufacturing Location:

Toledo, Ohio, USA

🏆 Awards & Recognition

Recognitions

Off Road Acclaim:

The Jeep Wrangler TJ is consistently recognized for its superior off-road capability and iconic design.