Vibrating accelerator pedal

Hello, it's probably something harmonically rhythmic that is happening due to a component needing to be insulated or grounding out on another component. It is impossible, though, to know what it could be without having a hands on inspection to find out what is happening. Unless there is some kind of engine performance issue related also, this is probably more an annoyance than anything else. Still, have someone professionally trained look at it to resolve the concern. Use this link to find some shops near you that can help with your concern: www.repairpal.com/repair-shops