DIY repair · Jeep Wrangler Unlimited (LJ)

Hunt down death wobble and set toe in the driveway

DIFFICULTY 2 / 5TIME An afternoon to diagnose; minutes to set toeCOST Usually a track-bar bushing, tie-rod end or ball joints, plus an alignment

Symptoms

Violent front-end shake after a bump, usually at 45–65 mph, that stops only when you slow right down.

The fix, step by step

  1. Start at the front track bar.
  2. With the Jeep on the ground, have a helper rock the steering wheel a quarter turn each way while you watch both track-bar ends and the bracket holes; any side-to-side movement is a fault.
  3. Then check the tie-rod ends, drag link, ball joints, control-arm bushings, wheel bearings and tire balance.
  4. Quadratec says a steering stabilizer rarely fixes the cause.
  5. Replace the worn part and re-torque the front-end hardware.
  6. Set toe-in by loosening the tie-rod sleeves and turning the tie rod until the front of the tires is about 1/16 inch (no more than 1/8 inch) closer than the rear.
  7. Center the wheel with the drag-link turnbuckle, then get a proper alignment.

Tools & part numbers

  • 13 mm and 15 mm sockets
  • tape measure
  • pipe wrench or locking pliers
  • a helper
  • torque wrench.

Where to buy the parts

Crown Automotive 52088431 front track-bar bushing, TJ & UnlimitedQuadratec ↗Amazon ↗
Crown Automotive RT21017 adjustable front track bar, TJ & UnlimitedQuadratec ↗Amazon ↗
Crown Automotive RT21008 heavy-duty steering stabilizer, TJ & UnlimitedQuadratec ↗Amazon ↗

Hunting a used or discontinued part? Search eBay Motors for Jeep Wrangler Unlimited (LJ) parts →

Before you start

Rated for a competent home mechanic with a decent tool kit. Confirm torque figures, fluids and procedures against the factory service manual for your VIN, support the truck on stands rather than a jack, and work at your own risk (disclaimer). Some parts links are affiliate links, which pay us a small commission at no cost to you.

The Boxy Dispatch · monthly

One new guide, one featured rig, one recall worth knowing. Monthly, no spam.

Subscribe and get a free printable inspection checklist for any truck we cover.