Target idle.

[jameslleary]

Can somebody open up ASDU and see what the Idle is set at? I have done the proceedure a few times for minimum air, but its still not right. I just want to make sure that I am going for the right idle speed. I have seen some posts on the net saying 525 +/-25 in drive, but I cant get it down to the 425 range. I must have the wrong info.
PS-Still have not found an OBD1 tuning App for iPad...I would do it myself if I could.

[gregs78cam]

I think the target idle - 100rpm is only an estimate, just to make sure that the IAC has a little bit of range below target idle. If you can get the idle you want with between 10 and 20 IAC counts you should be fine.

[jameslleary]

Thanks...I have no way to log, all i have is a hand held tach. I know that it needs to be set 100 below target, I just need to know what target is. This is a Factory ASDU prom....not modded.

[EagleMark]

ASDU is 525 stock totally warmed up in closed loop. If you can't get it that low just get it lower then that and stable.

Without looking at data it's a little harder. Drive around and get warmed up, turn off and cross A and B of ALDL plug, turn key on, unplug IAC, start engine and rev to 1500ish RPM for a minute to insure CL timer delay is met and O2 is warm and gone closed loop. Then set idle below 525.

[jameslleary]

Is that the minimum idle air setting, or the actual idle speed in drive(Target)?
Edit: never mind....i got it, thanks Mark!

[Scorp1us]

What is OL timer delay?