sometimes when the engine was warm and I started it, the idle fell so low, the engine allmost stalled, and then I got sick of it... and took one good hour time for my dear MX-3
here's what I've done:
disconnected the throttle wire, removed the throttle body, freed it of the rest of some original seals, which btw cracked all over, so I had to replace the seals (made them out of some cardpaper like sealing plate;cardpaper like plate with two sided rubber coating; which is cheaper than the original seals & easy to cut out with scissors).... I've cleaned the whole throttle body with degreaser, I even took the idle screw out, and sprayed it with the degreaser, than took a toothbrush, and scrubbed all the dirt away through all the details of the TB, the hard accessible points were cleaned with a screwdriver and a piece of cloth. Then I did the TPS adjustment, put the clean throttle back on with the new seals !! warmed up the engine, readjusted the idle, and it works pretty fine for 3 days now... I really hope it stays like this.
I suspect, that most of the problems were caused by the missadjusted TPS.
