car start

Hi everyone, I've got a question that I haven't been able to find an answer to no matter what terms I search. Maybe I'm using the wrong language, but I'm hoping you can offer some insight. When you get into your Mustang, there's typically a little drumbeat-type sound...

Car sways back and forth during startup First video at startup on a level surface, vehicle in Park, without the brakes applied, it rocks back and forth as soon as the engine turns. Been doing this since day 1. Second video this time in Neutral without the brakes applied, the car rocks about 6...