
As you have already found out, “Death Wobble” is the horrible front end vibration that starts when one tire (usually the right tire first) hits a groove or bump in the pavement somewhere around 40~50mph. Death Wobble is quite possibly the worst possible downside to having a coil-sprung front suspension on a vehicle with a track bar or panhard bar. Vehicles affected by this design are the Jeep Cherokee XJ, the Jeep Grand Cherokee ZJ and WJ, TJ and JK Jeep Wrangler, (and also include trucks like Toyota, Ford, and Dodge Ram, as well as early Ford Broncos).
Death Wobble is also extremely difficult to try to diagnose and fix, because it is actually caused by slop in the entire steering system as a whole, not by one component. To diagnose and fix Death Wobble correctly, the technicians at Tanner 4 Wheel Drive look for “play” everywhere in the steering and front suspension system, searching for anything that could have “play” in it. It’s very time consuming to find a Death Wobble fix, and can be downright dangerous while you are in “testing phase”, trying to exorcise this demon from your Jeep or Truck
The first place we start when diagnosing a death wobble is with an overall visual inspection. We spend 10 solid minutes under the front end, visually inspecting each one of the steering components for shiny spots on steel, rubber, or polyeurthane, which is typically indicative of suspension components that are moving around when they are not supposed to be. .
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