[Supercar Sean]

Just a thought, have you tried the thottle reset procedure?

1) Turn the car on position 1, no foot on brake, just so the lights on the dash and everything turn on, engine not on
2) Floor the throttle and hold for 1 minute. Use a timer
3) Keep the throttle on the floor and turn off the car
4) Release the throttle and wait at least 2 minutes. Use a timer and be patient

During the 2 minutes you should feel or hear some kinds of mechanical sound. That will let you know its being performed.

Turn the car on and go for a drive of at least 10 minutes.

Hope this helps.