I recently am experiencing a loss of speed when doing quick acclerations. Like if I have to acclerate real quick the engine won't the rpm swings real fast back and forth from 3 to 5 rpm. It never did that before when I acclerate quickly especially on on-ramps. Almost got in a accident today, because my engine wouldn't acclerate fast enough, but it did before. I can't figure out what caused this, but it just started happening last week. The car has no problem when driving only when acclerate real quick. Is it the speed limiter ? if so why is it kickin now, and never before ?