i heard this is a common problem but i dont know much about these cars, i am buying one tonight with this problem its only when you are parked and idling any clue?

 

looks like i need to clean the IACV

 

ok so im thinking it might not be my IAC, i unplugged it and the car runs the same?(still has a irratic idle. while driving at 45 or 50 it acts like it wants to start doing it, all other times it does not, and with the cruise set it drives normal. i was reading today about someone that had a similar problem with their car and it turned out to be the alternator, i am going to try to disconnect it briefly tomorrow to see if it makes any difference
does anyone have any idea, the p.o. said that they tried a new maff. and tps sensor thinking it was that,

 

no one also let me add the the trac light is on and check engine, hopefully i can scan it this weekend