Why your dodge neon accelerate on its own?

A Dodge neon may have troubles with High Idling due to a few different problems. It could be something in your air flow that can not get through. If this is the case something may be holding your Accelerator open slightly to have a higher Idle. This typically isn't the case because when you accelerate faster that will open more and will cause that object to be sucked in. Another thing it could be is your spark plugs. You could try to replace them to see if the problem is resolved as well. It could also be your throttle is stuck slightly