["00"Tundra]

This sounds like the accelerator pedal position sensor is malfunctioning. I do not remember the code number off hand, but did you check your code when it was showing the check engine light?

 

["00"Tundra]

Scratch the second part of my post. Does it only act like this when it is cold?

 

["00"Tundra]

Check to see if there are any stored codes before replacing any parts, but I am still leaning toward the accelerator pedal position sensor.