GeorgeGS300

I have a similar problem w/my 2002 GS300. No dash light or even engine code logged, so the dealer says. When I apply gas from a stop the car will hesitate and move slowly for a few seconds and then picks up to normal operations. Also cruising/coasting along at about 40 mph and apply gas the car will hesitate for a few seconds and then respond. Dealer can't recreate problem-never happens when I take the Lexus service rep for test drive. Does this sound familiar to anyone?