You have a fuel delivery problem. Its confused. Mass air flow
sensor, injectors, fuel filter or fuel pump, throttle position sensor.
If you have a check engine light on GREAT. Its already trying to
tell you what to do to fix it. If no Check Engine Light start here.
Once or Twice while driving before letting your foot off the
accelerator pedal move the transmission into neutral and see
what happens. If it does the same thing..fuel delivery problem, if
it does something different you need someone to look into your
car's so called memory or codes to see what is stored.