I have a 2004 Honda Accord EX with leather interior. I feel a slight singular bump sensation in the driver's seat whenever I make a left or right turn and accelerate or decelerate. It is almost as if the seat shifts 1/4 inch or so. Sometimes it happens and sometimes it doesn't. It is a very subtle (but annoying) feeling. The passenger seat feels nothing when this happens, so I have the feeling it is something that is inside or under the driver's seat. I checked for loose objects and I didn't find anything. Has anyone else ever experienced this?

 

Take your hands and try and move the chair. Shake the crap out of the seat by hand. Then do it to the pass. seat see if it feels the same. If not then your driver seat might just be lose some ware. Maybe a lose bolt....inspect all your bolds and stuff that connects the chair to the car.

 

It seems all the 7th gen power seats do this. My seat moves a little, if I brake or accelerate hard. I have been looking for a fix, because the replacement part is outrageous (have to buy the entire mechanism). I hope someone finds some bolt we can tighten. I know techs have dealt with this before.