silhoutte 1995 turned off

Hi to everybody, im new on this foro and i need your help, i have a olds silhoutte 1995 3.8l and the brief history of this is as follow, i just get this one and couple of days laters i saw that get turned off by itself, i went a diagnostic center and they told me the next codes P0122, P0321, PO705, P1361 & P1406. Once that i knew that i fix the PO122 which is related with the TPS sensor, but the failure still was there. then i try to fix by myself replacing the crankshaft sensor but while i remve this one i found that the cables for the transmission and the camshaft sensor were burned out and i replaced the camshaft sensor only and i fix the cables, the problem is that the failure still is there. anybody might face a failure similar like this the truck just turned of and you turned on and it works for couploe of miles and then the same.


regards.
note: my english might be not so good but i trying to say what i saw on my truck.