My car bucks due to a faulty Throttle Valve Switch when it's in the midrange transitioning between coasting and accelerating. It is fine as long as I am cruising steady or accelerating. Is removing it as simple as removing the two screws and pulling it out? I tried that but it wouldn't budge, like there is something else holding it in place. I have been advised that it might just need internal cleaning of the contacts but don't know how to get inside of it. I have also been told that that part is no longer available form parts suppliers. If that isn't the case, does anyone know of a source for replacement? Thanks,