98 Tacoma engine problem

Hi all, first time here ...I have a big problem with my '98 Tacoma 2.4 engine ...While driving in low speeds the engine cuts off( I drive on the Interstate no problems when Im in the city at stop lights it keeps shuts off)....all the lights come on but the engine does not run... it starts right back up like nothing happened....I went to mechanics but all of them try the computer thing and doesnt say anything ....or they cant read it....HELP....Thank you