speedracer5532

iTrader: (8)

Cold starts are killing me. On a cold start I have to start the car about 3 times before it will stay running and the IAC counts are pegged at 310 and stay there. After the third start the car will surge alittle and then settle in to a nice idle. The IAC counts continue to stay at 310. I have LTIT disabled and it takes awhile before the STIT start reading. I have logged IAC - Start-up Airflow and at startup the scanner says the engine wants 16.6 grams/s more and I logged IAC - Start-up Friction Airflow and the scanner says that is wants 6.73 grams/s more. I have added more to it and then the next cold start the scanner will say that is wants even more air for the Start-up airflow and Start-up friction airflow. It just seems no matter what I do nothing seems to help. I am running the car in Open Loop.

Hopefully someone out there has a good idea for me to try.

Billiumss

iTrader: (11)

What are all your mods?

If you have a FAST 90 TB, did you drill a hole in the TB blade?

speedracer5532

iTrader: (8)

I have a NW 90 TB and no I didn't drill a hole in the TB Blabe.

white2001s10

iTrader: (4)

Sounds like it needs a hole.
This isn't on a vette with ETC is it?

speedracer5532

iTrader: (8)

No this is not on a Vette, it is with the car in my sig. I added some fuel to the after start enrichment and now when I start it up revs up to like 1800 rpms. Now the car is kinda warm so I really won't know until tomorrow morning if the cold start is any better. I would think for it to rev up to like 1800 rpms it is getting too much air right?

white2001s10

iTrader: (4)

Well if it's not a vette with the ETC, then it does need a hole in the TB blade.
Yep, a 402 will definately need a hole. It's no surprise it's maxing out your IAC range.