Idle log, need help

[DSM_munky_man]

Alright guys, I have a 15 second or so log of my idle, I tried adjusting the stuff for what the demo says and nothing works. It is idling like crap and no matter what I do for deadtime or mafcomp it doesnt change much. I just upgraded to 1200cc injectors when I did the V3. Hopefully you guys can help me.

Edit: Along with the Idleing rough it does when it is warmed up, most the time, and it seems my o2 sensor always is at .02. Whats up with that? bad o2? and is my MAf supposed to be that high of hz?

 

[doubleclutch99]

what maf are you running? is it stock or something different?

 

[DSM_munky_man]

Stock, I think i found that my o2 sensor is bad. That may be the reason for the .02v and the not being able to tune right no matter how much I adjust my mafcomp to get the airflowperrev to ~.25. when I adjusted it lower it wanted to die and the number went up. If i adjusted it higher, no matter how high it would not go below .39.

 

[doubleclutch99]

Id say i have to agree on the O2 issue. id check to make sure it doesn't have any shorted wires before buying one . the log you put up showed that you had the stock maf so i wanted to verify that. theres been more than a few people ive met that are running a gm maf and leave link set up for stock. that tends to have an effect on the way itll run. just my 2 cents

 

[DSM_munky_man]

Well I did the test specified in my Haynes/Chiltons manual and i get source voltage to it al lthe time, and I am not getting continuity between 2 and 4 like it says I should and the volts at idle is fluctuating a lil over and under 0v and at a high rev it only goes to .227 or so volts when it should be between .5-1v according to the manual.

And damn o2 sensors are expensive. 54 for one from autozone.

 

[doubleclutch99]

well atleast it should get you back on track to tuning. good luck and let us know how it's going