Dodge shimmy when turning

Hello all
1.) I am new to this forum I have a few problems with my 2003 dodge Hemi when I turn left it has a harsh vibrate noise (sounds and feels like tire rubbing but its not) took it in to dodge and they replaced the power steering high pressure line that did nothing has any one had this problem?

2.) When I start my truck some times when its in idle it starts shaking like its going to die or stall what could this problem be they said it was also the high pressure line any one have any suggestions.

Sorry so long please help

poss. wheel bearing

If you have a 4x4 it's "Highly" possible it's a front wheel ujoint probley wasn't greased before assembly. Jack up front end turn wheels hard one way left or right then rotate wheel if it's bad wheel will try and straighten out. If it does you will have to disconnect link between wheels to find out which which one is bad could be either side.