Second opinion needed on track bar issue...
I have an 06 Wrangler Unlimited with a 2" lift. I put the lift on years ago and had a bit of death wobble at the time. I got a new steering stabilizer which seemed to resolve the problem, and signed up for Firestone's lifetime alignment plan. Every six months or so when I would start to notice a little bit of vibration beginning to appear, I would take the Jeep into Firestone, have them check the alignment, as well as rotating and balancing the tires. In the past, this has always fixed any issues with wobble.
Unfortunately, I recently started to get wobble again, and even after having the alignment and tires taken care of, the wobble is still there. I took it back to Firestone again and asked them to double check that the alignment had been done correctly. Their answer was that my track bar is bad and needs to be replaced. They quoted me $175 for this task.
Although something clearly needs to be done to fix the wobble, I'm not convinced Firestone is being honest with me about the problem. I always double check their work, because I have had some bad experiences with certain Firestone locations in the past attempting to sell me "repairs" that weren't needed, and then when I went to check them myself, I could clearly see that the repairs weren't needed. I'm not an expert mechanic by any stretch of the imagination, but I can tell when something is in perfect working order on a vehicle with low mileage. This current Firestone location hasn't done that to me, and I actually spoke with the mechanic who did the work on my Jeep, but I still feel the need to get a second opinion to make sure I'm not being asked to replace something which won't solve my problem.
So I guess my questions are:
1. How can I verify my current track bar is bad? Is there an obvious test I can do to determine if a problem actually exists?
2. If the track bar is bad, should I simply buy a new one and attempt to replace it myself, or allow Firestone to do that?
3. I've noticed that while a basic replacement track bar is fairly cheap (I saw a link in another thread to one on Amazon for $65), there are also more expensive track bars which appear to be designed for use on vehicles with lift kits and can be adjusted. Would these more expensive track bars possibly help to solve my wobble issue and are they a good investment?