did U do the throttle reset? and U should disconnect the batt do one of two things 1 open the door about 5 times from fully closed.
two pump the brake peddle about 5 times, this is to discharge the capacitors in the system,,, reconnect the batt if that did not work reset the throttle body.

The throttle body reset

1. Get in your car
2. Turn the key to the on (not start) position, the position just before the starter
turns over.
3. Press the gas pedal to the floor with the key in the "on" position.
4. Hold the pedal to the floor for five seconds, then turn the key back
to the "off" position (don't remove the key), then release the gas
pedal.
5. Wait 2 minutes for a full alignment.
6. Drive the car as you always do.