and about the idea that it might be an 02 sensor. I dont think a bad 02 will do what your saying. With a bad 02 your car might misfire or run really rich. but making the idle fluctuate isnt caused by that

 

well it all started with the altinator surging power loss ,no 12v. replaced it. now i have a 3k very high idle, after that in a couple of mins it drops to 1500-2k rpms..i looked in the forums, an nothing or at least no right answer to the question. the ohms for the TPS is 0.58-0.62 checked..mass air flow unpluged an made it higher..im running out of options here with a new born baby only 12 days old kinda hard to just spend money when its not needed, so if anyone knows or know someone please answer my post..thanks btw i was a honda owner for some time but my wife covinced to get this so i want to make her happy an keep it, but mitsubishis are jiberish to me so any or all help would be awsome...