Sounds similar to what happened on my '93 SSEi a few years ago. On mine, it only idled low/stalled occasionally, and only when the engine was warm or hot. Giving it a little gas momentarily so it idled at 800 RPMS or so always got the engine running ok. I replaced the plugs and wires and then the problem became less frequent, but then I cleaned the throttle body and the problem hasn't happened since. By the way, even when it was idling low/stalling, the throttle never felt like it was sticking or binding.