Well the vibration has gotten worse. I've avoided this long enough and finally started making some changes.
- Replaced the track bar bushing with a Moog rubber one (not the 3-piece). When I was finished the axle end seemed solid, but had a little movement on the frame end. On a scale of 10 to 0, 10 being how it was, this made it about a 7.
- Replaced the lower CA bushings with Raybestos Professional Grade Clevite. This made a big difference, maybe a 2-3 on the 10 scale but it steadily got worse over a few weeks.
- Replaced the Track Bar with a Moog. BTW, the Moog DS1235 that is supposed to fit 97-06 is about 1/2" - 3/4" longer than the stock bar, so the axle is off center now. (It's stock height.) It's vibration free now up until about 70mph. At that speed it will vibrate a little, until you brake, then it's bad.
My next step is to replace the upper CA bushings. I've searched, but I can't find a definitive answer on the bushings. Is the front bushing on the axle the same as the rear bushing in the arm? The Chrysler parts list shows the arm (with bushing) then a rear bushing as a separate part (2 req), but no part number for the front bushing. Rockauto has various brands, but only one part number for the upper. They sell the Raybestos lowers in pairs, but the uppers as singles. Does anyone know if the axle end & frame end use the same bushing?
Does anyone have any next steps if this doesn't solve the problem?
Thanks in advance...