DID THIS SINCE I HAD VEHICLE, EVEN WITH NEW PLUGS ETC.

When I accelerate quickly from a stop position the vehicle stutters and comes to an almost halt. This also happens if I go over a mound quickly. It is very dangerous and almost caused accident a number of times. I come out in front of traffic and the oncoming vehicles have to break up suddenly because to prevent running into my back or side. I am now extremely cautious joining traffic as a result.