Several times a week after coming to a stop the truck does not have any throttle response until the gas hits about 3/4 down. It just stays ildleing and doesnt move. It just does this once on a short trip and then never again on the next stop. About every 4-days it will repeat. Any idea's what to look for? 2002 Tundra 4.7. New TPS just added without change. Does not have any engine codes.