P0122 Code 2001 Chrysler 300M

I bought a 2001 Chrysler 300M Friday and everything was fine. It ran great, I drove it about 3-4 hours Friday, then Saturday the check engine light came on and after a 30 min trip, it cut off pulling out of a parking lot. It runs rough and cuts off. The first time I checked the codes they were:

P0740
P0122
P0700
P1496
P0405

Cleared the codes and only P0122 and P0405 showed up. I am not a mechanic but a friend of mine used to be a mechanic at a Chevrolet dealership and because I have no money after just buying this car, we're trying to figure it out together. We replaced the Throttle Position Sensor, all of the codes, except P0122 and P0405 went away, but it cut off again. We cranked it back up, wiggled the wires going to the TPS and it immediately cut off. We replaced the plug and wires, and it cut off again. OBD website said it could be aligned wrong, but there is no way, that we can tell, to adjust it. It is now showing the following codes:

P0740
P0122
P0700
P1496
P0405
New one: P0106

I cannot afford to take it anywhere and because the car was sold as is, they are not responsible and won't fix it. If you have had a problem like this and could steer me in the right direction or could tell me where to go from here, I would greatly appreciate it. My thoughts are maybe the crankshaft position sensor? OBD said pedal position sensor, but according to Advance Auto's and Napa's websites, my car doesn't have one. I don't think I looked it up wrong, but I don't know. Any help would be greatly appreciated!