Jeep Wrangler TJ 2001 factory workshop and repair manual
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Covers the gasoline petrol engines 2.5 L AMC straight-4 engine * 4.0 L AMC straight-4 engine
TABLE OF CONTENTS
Lubrication and Maintenance
Suspension
Differential & Driveline
Vehicle Quick Reference
Brakes
Cooling
Audio/Video
Chime/Buzzer
Electronic Control Modules
Engine Systems
Heated Systems
Horn
Ignition Control
Instrument Cluster
Lamps
Message Systems
Power Systems & Restraints
Speed Control
Vehicle Theft Security
Wipers/Washers
Navigation/Telecommunication
Wiring
Engine
Exhaust System
Frame & Bumpers
Fuel System
Steering
Transmission and Transfer Case
Tires/Wheels
Body
Heating & Air Conditioning
Emission Control
Component and System Index
Jeep Wrangler TJ 2001 factory workshop and repair manual
- Safety first (do these every time)
- Park on a flat, level surface, set the parking brake, chock the rear wheels.
- Wear safety glasses and gloves. Never work under a vehicle supported only by a jack — always use jack stands on solid ground.
- Keep a phone nearby and do not rush. If anything seems unsafe or parts are badly worn, stop and get professional help.
- Quick overview of what “alignment” means for a TJ (short)
- Primary adjustable parameter at home: toe (how parallel the front wheels point).
- Caster and camber on a solid-axle TJ are harder to measure/adjust without specialty tools or aftermarket adjustable arms; large lifts often require extra parts to correct caster/camber.
- Most at-home DIYers set toe and check for worn parts; full 4-wheel alignment ideally done on an alignment rack.
- Tools you need (each tool name followed by what it is and exactly how to use it)
- Floor jack
- What: Hydraulic jack used to lift the front axle.
- How to use: Position under the manufacturer's front jack point (consult manual), pump handle to lift, raise just enough to put jack stands under axle brackets, then slowly lower onto stands. Never rely on the jack alone.
- Jack stands (rated for vehicle weight)
- What: Supports to hold the vehicle safely while you work.
- How to use: Place stands under solid axle or frame lift points, adjust to same height, lower vehicle onto stands. Test stability by gently rocking the vehicle.
- Wheel chocks
- What: Blocks to prevent rolling.
- How to use: Place behind rear tires when working on the front.
- Tape measure (1/16" resolution or better, steel tape preferred)
- What: For measuring toe distances across rims.
- How to use: Measure from the same points on both wheels (front edge of rim to front edge of opposite rim and rear edge to rear edge); keep measurements at hub height and parallel to car centerline.
- Chalk, marker, or painter’s tape
- What: Mark reference points on rims for repeatable measurements.
- How to use: Mark two spots at the same height on each rim so you measure the same spots each time.
- Straightedge or long carpenter’s level (optional but helpful)
- What: Helps check wheel verticality and ensures measuring points are level.
- How to use: Hold against rim to find a straight reference height for measuring.
- Tie rod end tools: two open-end wrenches of the correct sizes (often 1-1/8" and 7/8" or metric equivalents), or adjustable wrench
- What: Used to hold and turn the tie rod adjustment sleeve and jam nut.
- How to use: Hold inner tie rod or sleeve stationary with one wrench and loosen jam nut with the other. Turn the sleeve or rod to lengthen/shorten tie rod to change toe. Always count turns or measure change so both sides remain symmetric.
- Torque wrench (range covering tie rod and steering component specs)
- What: Ensures nuts/bolts are tightened to factory torque values.
- How to use: Set required torque, snug fasteners, then torque to spec in the correct sequence. Consult factory torque specs for each fastener.
- Breaker bar / ratchet and socket set (including sockets for steering linkage jam nuts)
- What: For removing or loosening nuts/bolts requiring higher torque.
- How to use: Use appropriate socket; if a bolt is stuck, use penetrating oil and a breaker bar for leverage.
- Pliers and pickle fork or tie-rod separator (if replacing tie rod ends)
- What: For removing cotter pins or separating tie rod ends from linkage.
- How to use: Remove cotter pin with pliers, use separator to dislodge the ball stud from the steering arm.
- Magnetic level or digital inclinometer (optional, for caster check)
- What: Measures angle of axle/knuckle to approximate caster.
- How to use: Attach to axle housing or bracket per gauge instructions; compare left/right.
- Long length of string or string alignment kit (alternative measurement method)
- What: Creates a reference line parallel to vehicle centerline to measure toe.
- How to use: Run string around both front and rear wheels, adjust to be parallel to axle center, measure from string to rim at front and back of wheels to get toe.
- Camber/caster gauge or professional alignment tool (optional but recommended if you want full alignment)
- What: Measures camber and caster angles precisely.
- Why you might need it: TJ caster/camber adjustments often require unknown adjustments or aftermarket parts; gauge tells you what’s out of spec.
- Basic checks before any adjustment (what to inspect and why)
- Tire pressure and condition
- Why: Uneven tire pressure or wear distorts measurements. Inflate to spec.
- Steering and suspension play
- What: Grab the wheel and wiggle; lift wheel and check play in tie rod ends, ball joints, wheel bearing.
- Why: Loose/worn components must be fixed before alignment — they make adjustments impossible or unstable.
- Visual inspection of boots and hardware
- What: Look for torn boots, leaking grease, bent parts, rust.
- Why: Damaged tie rod ends, track bar, or ball joints lead to poor steering and alignment drift.
- Home toe-alignment method (string or tape method — what to do and how to use the tools)
- Setup vehicle for measurements
- Lift is not required for toe adjustments; leave vehicle on the ground on level surface with wheels straight (mark steering wheel center with tape).
- Ensure parking brake on and rear wheels chocked.
- Mark reference points on rims
- Use chalk or tape to make two marks at the same height on each rim (left and right).
- Measure front and rear distances
- Use tape measure: measure from the front-most point of the left rim mark to the front-most point of the right rim mark (across the vehicle). Then measure the rear-most points the same way.
- Toe equals front distance minus rear distance (positive = toe-in, negative = toe-out). Aim for factory toe specification (usually small toe-in for TJ; if you don’t have spec, aim for near zero to slight toe-in).
- Adjust tie rods
- Loosen the jam nuts on both tie rods using wrenches.
- Rotate the tie rod sleeve or inner rod the same number of turns on each side to change overall toe. Shorten the tie rod to toe-out, lengthen to toe-in. Keep steering wheel centered during adjustments (mark it first).
- Re-measure after each small adjustment until front and rear measurements match the target.
- Tighten jam nuts to factory torque with the torque wrench.
- Recheck and test
- Re-check measurements with the vehicle settled (drive a short straight distance and re-measure).
- Confirm steering wheel is centered; if not, correct by turning both tie rods equally and re-checking toe.
- Do a short, cautious road test at low speed and monitor steering response, then re-check after test.
- When specialty tools or a shop are required (and why)
- If you need precise camber and caster measurement/adjustment
- Why: TJ solid axle caster/camber adjustments often require moving axle fore/aft, adjustable control arms, or aftermarket adjustable track bar and dropped pitman arm after lifts.
- Tools required: camber/caster gauge or professional alignment rack. Without these, you cannot set caster/camber to spec accurately.
- If steering components are worn or there is significant lift
- Why: Lifted TJs usually need adjustable track bar, adjustable control arms, dropped pitman arm, or adjustable panhard bar to correct geometry. These are parts you must buy if geometry is out of spec.
- If you want factory-precise 4-wheel alignment
- Why: Tire wear and handling are best corrected with full 4-wheel alignment on a rack by a shop using computerized specs.
- Common parts that may need replacement, why, and what to buy
- Tie rod ends (outer and inner)
- Why replace: excessive play, torn boots, clunking, sloppy steering, uneven tire wear.
- What to buy: OEM or good-quality aftermarket tie rod ends. If replacing inner tie rod, an inner rod-specific tool may help.
- Drag link
- Why replace: worn drag link causes loose steering and can throw toe out of spec.
- What to buy: Drag link matching your TJ year/steering configuration; consider upgraded heavy-duty if you off-road.
- Track bar (steering/stabilizer bar)
- Why replace: bent or worn track bar lets the axle sit off center; needed after lifts to re-center axle.
- What to buy: adjustable track bar if you have a lift; otherwise OEM replacement if bent.
- Ball joints and control arm bushings
- Why replace: play in ball joints causes wandering and uneven tire wear; bushings can let arms shift under load.
- What to buy: OEM-spec ball joints or replacement kits, polyurethane or rubber bushings depending on comfort vs durability.
- Pitman arm or dropped pitman arm (for lifted Jeeps)
- Why replace: to correct steering geometry after lift; stock pitman arm can cause bump steer.
- What to buy: drop pitman arm sized for your lift height.
- Wheel bearings/ties/wheel hubs
- Why replace: noise, play in wheel, roughness; can mimic alignment issues.
- What to buy: hub assembly or bearing kit for TJ front axle.
- How to tell a part needs replacement (symptoms)
- Excessive free play in steering wheel; wandering on straight roads.
- Clunking when hitting bumps or turning.
- Uneven or cupped tire wear.
- Steering wheel not centered after correct toe set.
- Visible torn boots, grease leakage, or rust/wear on joints.
- Final tips and limits of DIY alignment
- Minor toe corrections at home are doable with basic tools and patience.
- If you find worn steering/suspension parts, replace them before aligning.
- For camber, caster, severe pulls, or after lifts, get a professional shop with an alignment rack — they have the tools to measure and correct all angles.
- Always tighten to factory torque specs; consult a repair manual or online factory spec sheet for your TJ’s year.
- After any replacement or major adjustment, re-check toe and perform a road test.
- Quick maintenance note (to avoid repeating alignments)
- Check tie rod ends, drag link, and ball joints every 6–12 months or after heavy off-road use.
- Keep tires properly inflated and rotate them regularly.
No extra chatter. rteeqp73
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The Automatic Transmission 42RLE is a four-speed transmission that is a conventional hydraulic/mechanical assembly controlled with adaptive electronic controls and monitors.