Hello, this sound is weird when I start car. If I were to describe it I would say it sounds a lot of keys being dragged across a metal washboard real fast. It’s just a second. Engine warm or cold. Maybe even a bunch of pennies in a can and shake it fast. Like I say warm or cold, engine warm or cold, I push start button and the noise. Pretty much once car is on there is no noise...normal? Bad? Please help. Thanks!!