1999 Jeep Wrangler TJ SE, Sport, Sahara Workshop Repair & Service Manual (OEM)

This 1,432-page PDF is the Pacific Coast Manuals edition of the 1999 Jeep Wrangler TJ workshop material, marked Updated 3/25/2011. It covers the SE, Sport, and Sahara 4x4 series with the 2.5L four-cylinder and 4.0L six-cylinder engines. Its mechanical sections suit professional technicians and experienced DIY owners with solid service knowledge; axle setup, automatic-transmission overhaul, airbag diagnosis, and refrigerant work demand shop-level equipment and, where the manual specifies it, qualified service personnel.

• Configuration identification: VIN and body-code tables distinguish the EPE 2.5L and ERH 4.0L engines; AX5, AX15, 30RH, and 32RH transmission codes; TJJ left-hand-drive and TJU right-hand-drive bodies; and U.S., Canadian, Mexican, and international market codes.
• Engine, cooling, and fuel repair: Both engines receive dedicated sections for removal, cylinder-head and block work, valve service, camshaft and timing-chain work, pistons, bearings, rear main seals, and oil pumps. Diagnostic coverage includes compression and combustion-leakage tests, oil-pressure checks, fuel-pressure and leak-down testing, injector checks, cooling-system leak tests, reverse flushing, and accessory-belt diagnosis.
• Transmission, clutch, and transfer-case work: The AX5 and AX15 five-speed chapters cover removal, seals, geartrain teardown, shaft and synchronizer inspection, reassembly, and transmission-specific tools. Separate 30RH/32RH material covers road, stall, air, and hydraulic-pressure testing; valve-body and clutch-pack overhaul; band and cable adjustments; and hydraulic schematics. The NV231 section handles removal, full disassembly, inspection, reassembly, and shift-linkage adjustment, while the clutch chapter addresses the cover and disc, pilot and release bearings, flywheel, pedal, and hydraulic linkage.
• Axle and driveline setup: Coverage spans the 181 FBI front axle plus 194 RBI and 216 RBI rear axles, including standard and Trac-Lok differentials where applicable. Procedures address axle shafts and seals, pinion and differential removal, bearing preload, pinion depth, ring-gear backlash, tooth-contact analysis, Cardan joints, propeller-shaft runout, vibration diagnosis, and driveline-angle measurement.
• Brakes, steering, and suspension: Base and antilock brake chapters cover hydraulic diagnosis, bleeding, rotor and drum inspection or machining, caliper and wheel-cylinder service, parking-brake adjustment, the HCU, CAB, wheel-speed sensors, and tone wheels. Steering content adds flow and pressure testing, pump service, recirculating-ball gear disassembly and adjustment, and linkage repair. Suspension sections provide alignment diagnosis plus front and rear coil-spring, control-arm, track-bar, stabilizer-bar, hub, and bushing procedures.
• Electrical diagrams and fault tracing: Group 8W is organized into 25 named circuit and reference sections. System examples include Fuel/Ignition, Anti-Lock Brakes, Airbag, Transmission Control, and Air Conditioning-Heater, supported by connector pin-outs, ground and splice information, component indexes, and LHD/RHD location views. Separate chapters cover the battery, starting and charging systems, ignition, instrument cluster, lighting, wipers, speed control, passive restraints, rear defogger, and Sentry Key Immobilizer System.
• Body, frame, and HVAC service: Repair coverage extends to full and half doors, hard and soft tops, windshield and stationary glass, seats, tailgate, liftgate glass, frame and body-opening dimensions, weld and sealer locations, and panel adjustments. The HVAC chapter covers performance and leak diagnosis, refrigerant recovery, evacuation and charging, compressor and clutch work, heater core and evaporator replacement, housing service, doors, ducts, and vacuum controls.

Repair Data and Shop References

Maintenance schedules, lubrication points, fluid requirements, capacities, alignment data, wear limits, clearances, pressure-test values, electrical test data, and component-specific torque tables are placed with the related systems. Factory tool callouts include the C-3339 Dial Indicator Set, 6774 Pinion Depth Tool Set, W-129-B axle housing spreader, and 8544 Camshaft Bushing Remover/Installer.

The axle chapters flag the risk of overcrushing the 181/194 RBI pinion spacer during preload setup, which can damage the spacer or bearings. The suspension material also warns that tightening rubber-bushed links away from normal ride height can shorten bushing life.

Diagnostic and File Scope

The manual supplies OBD-II code descriptions, monitored-system information, component tests, wiring diagrams, and removal or repair procedures. Some complete DRB scan-tool routines—particularly PCM/LDP, airbag, Sentry Key, and CCD-bus diagnosis—are assigned to separate Chrysler Diagnostic Procedures manuals and are not reproduced here.

The PDF contains one 225-page Group 8W wiring section twice. Its stated 1,432-page total therefore represents 1,207 pages of distinct content, not two different wiring sets.

Before underbody work, secure the Wrangler on a certified hoist or properly rated jack stands; airbag and refrigerant service require the isolation and recovery procedures and equipment specified in their respective chapters.