So i just bought my 07 charger (used) and well 2 weeks later, it starts shaking bad at id;e. I put it in reverse and it started shaking while moving. Everytime i drive, when im completly stopped and let go of the brakes a little it shakes too. It feels like it wants to sturn off. anyways i took it to the dealership and they said it was the spark plugs so then changed them and cleaned out the throttle. and just now it started doing the same thing again, shaking . any ideas what it might be?