thanks for the reply. yes I know how the vacuum is created.and the actuactor indeed looked to me to be totally electric,but the parts books keept calling it a vacuum act..i do appreciate your conformation. most cars I deal with are American and most of them still utilize vacuum servos up until electric throttles took over....man, ill take a car with a throttle cable over throttle-by-wire any day of the week. just my opinion. thanks again for the reply,barry