still have this problem... diagnostic test brought up the idle control valve, there's two wires going onto it and i was missing one so put on the other one and still the revs bounce away. then cleaned the icv, it was fairly dirty due to the oil so gave that a clean and was perfect for 3/4 days until today. was on my way to the city and it was worse than ever, this time the engine managment light stayed on instead of flashing. my local mechanic said he doesnt know what it is and id be better off taking it to someone thats working on glanza's more often than he is.