weird idoling

[ilovedrifting]

when ever my car idols, the tac will move from .5 to 1 and back and forth for as long as i idol, car still performs fine, car just didn't used to do that and I'm wondering what causes that

[navysnail]

clean the maf, that filter that you put in may have gotten oil on it, ill help ya tomorow if you want

[SilviaS14KA24DE]

american idol? or do you mean idle and idling

[s13EastTN]

I beleive that might be a vacuum leak, I know my honda did the exact same thing when I had a small vacuum leak. You can spray carb cleaner all around your vacuum hoses and such, if your car starts to sturrer then that means carb cleaner is getting in your engine, IE there is a vacuum leak.

[180fan]

Too many possibilities as to what could cause that. Usual suspect though is a vac leak for oscillations. Tighten down your hoses and vac lines. Replace if you see cracks in your vac lines.