when driving in traffic and trying to keep a constant speed, like, 25-50 kph, and slowly lifting gas pedal, the car acts like i have totally, suddenly lifted the pedal and revs drop to idle...new idle control valve, plugs, wires, dist rebuild, injectors, next may be a new throttle cable, though that is a bear as it is a varioram...ideas? and thanks ahead for any input... annoying mostly but needs fixing at some point...like, now...