It's2000 w/ 218K miles on it. It started a couple weeks ago after my wife had a flat and the spare was put on it. The spare probably had nothing to do with it (just a coincident?). I replaced the hub assemblies around 150k miles. I went to look at the pitman arm and idler arm and low and behold it doesn't have them. Now I have never messed with this type of steering. Before I go and start pulling boots off and checking it out, is this where the vibration is coming maybe?

Thanks