Wants to jerk around 40 ,iles an hour - CL Acura Cars & Trucks

That's a Misfire more then likely, A spark plug , or a coil breaking down or a plug wire if your vehicle has them ! Most vehicles have done away with spark plug wires an now have a single coil per cylinder called coil on plug ignition .Have you ever had spark plugs replaced ? If the spark plug gap becomes too worn (large) it can cause the high energy spark to find a path with less resistance . This high Voltage can back feed through the primary side of the ignition coil causing the driver (transistor) inside the PCM - engine computer to short out . This will cause you to have an expense you don't won't . Buying a new computer can cost several hundred dollars .