funky idle issues and running rich. PLEASE HELP!

cenok is family

15 Year Member
Jun 25, 2003
1,409
69
79
Norman, Ok
i've been battling this for months and i'm starting to run out of ideas! i wouldn't say it has a BAD surge, but it definitely has a surge at idle and runs RICH as hell. i've had it dynoed twice and both times it had a 10.x:1 a/f. every sensor on my car is new except for the MAP. no vac leaks (i've checked dozens of times), fp is at 40psi, timing at 14. it's strange cause it'll drive HARD on occasion, but i'd say about 80-90% of the time, it drives poorly, spits and sputters, low power, etc. it will do this thing after it's warm, if i'm just sitting there idling like at a stop light or something, it'll idle at around 800 with a small 100 rpm surge, but if i sit there longer than a few minutes, the idle will try to drop to like 500 or 550 and gets really quiet. i have to blip the gas to keep it from dying. i'm not even sure if it'll work but the next thing i'm gonna try is re-adjust my rockers. i havent done it since i put the heads and cam on so i need to anyway. anyone have any ideas?
 
yeah i'll try to pull the codes tomorrow. i figure it needs some fuel pulled at idle, but i have no way of doing that as of right now. i need to either get a tuner for it or at least a chip burnt.

Since its doing this after its warm you surely need to pull the codes, since it sounds like a closed loop problem.

Actually I thought you already had a tune done while it was dynoed.