Blacker

iTrader: (3)

I wanted to make sure my IAC was working correctly. When I cold start the car up, the IAC is ~170 and it slowly works its way down. The IAC will settle to 40 when the car is hot. I get a little bit of surging during cold starts and wanted to eliminate the IAC. Hot starts are very good. The VE tables are set to 50/65/80 for 400/800/1200 and the F/A has also been adjusted.

Cal

iTrader: (1)

Take a look at this thread:
https://ls1tech.com/forums/pcm-diagnostics-tuning/177230-stop-drilling-those-tbs-fix-stalling-without-computer-tuning.html
I think the best thing you can do is reduce the authority of the IAC with the TB set screw, but not take it out of the system.

Blacker

iTrader: (3)

I guess I worded the question wrong. I just wanted to eliminate the IAC as a potential problem. I have access to EFI Live and will go out and adjust the set screw.

Another_User

It is probably your problem. Your running airflow table is wrong and needs to be adjusted. I left a good post about that on here.

Cal

iTrader: (1)

OK, well just unplug the IAC if you want to issolate it from the problem.

luv2spd

iTrader: (1)

If you have cold start surge, is that an indication of not enough running air flow or too much?

Another_User

Locking the IAC did no good for me. Unplugging it won't make a bit of difference. Then the PCM will bounce up and down off the high and low idle spark adjust thresholds, which is just as bad, if not worse.