hi yeha i live in south east suburbs of melbourne. i own same car but in manual. i have same problem. the car runs fine, but when this problem occurs the revs usually sit around 1,100 rpm but it sits around 4-500 rpm, and in alot of the time will just totally drop off. and engine cut out occurs. my old man and i replaced both the fuel filter and spark plugs. this fixxed it for a while then a week later i was driving around and then stopped at traffic lights and the cars does the drop to bellow 500 rpm. i was like SHITE@ need to get home our else will become pain in the bumm. got it home and then turned it off and turned it on again and the engine just cuts out. so i left it for 1hr and came back and the same thing happens engine cutt out. so i restart 3 times and it decides to sitt at 1000 rpm, so i just reved it in incriments of 500 rpm too 3000 rpm and then drop it down in those incriments and it didnt drop out, so i went for a 30km drive and was all good. i have noidea what the problem is. hopefully its sommething easy. I'm thinking its the auto choke. not responding to keep the motor at proper idle. but could be dodgey fuel.. just yea I'm only 19 so i have noidea. if it turns to shit ill just get RACV to come figure it out!