I beleive I am experiencing the same problem. I was driving my car last Friday when all of a sudden it began jerking while I was driving, it cut off while I was driving & cut back on, the dashboard, the radio & everything shut off & on while I as in motion. I pulled over 2 times on my commute home, luckily Iii made it home safely. Well once I got in my driveway it appears that the car was still acting crazy as I tried to power it off, so it still was kinda running when I took the key out, out if this world experience, never seen nothing like this before. It's been told to me from several people it may be starter, it may be alternator, it may be ignition lock control, module or whatever but I put on new starter & new alternator also since whatever issue it drained the baftery so I bought a new battery from AutoZone. Can anyone on board pinpoint me in the right direction. Thank you. Also let me add that when the new battery was put in, 1st with the positive connection than the negative, without the key being in ignition the car began to run on its own, like seriously, the engine fan was spinning & everything. Weird! Please help me.