IAC and idle problem

[1nadrag]

Ok I put in a new iac and reset it according to the gntype. org procedure. Now the car is running pig rich and stumbles when I take off from a dead stop. All of my readings on the scanmaster are fine. Any help will be appreciated.

Thanks Tom

 

[TurboDave]

You'll really need a scan tool to set it properly. You, I'm afraid, are just another victim of a procedure that gets more people in trouble than it helps.

 

[Danster]

Post your Idle readings from the scanmaster. Also list your mods done to the car along with the chip.

Dannyo

 

[Roger]

Need to knowe your mods in order to diagnose your problem. Offhand, my first guess, is incompatability between your injectors & your chip.

 

[striker_29]

Did you reset your tps after you got your iac counts right?

 

[1nadrag]

First off the car was running great until after going wot it started running rough at idle. Ended up being the iac gasket partley blew apart creating a vacuum leak. So I put a new gasket in and while tighting the iac it broke. So I put in a new one set it according to the web site and I have the same problem again, running rough at idle and starting off from a stop. Still runs great after 1500 rpm's on up. Scanmaster shows 800 =/- 25 rpm's and 23- 40 iac when engine is warm. This is the only thing I have done to it. TPS is at 44.
List of mods

231 c.i. Buick V6
Ported & Polished Heads
Champion Ported Intake
Ported Throttle Body &
Upper Plenum
Poston Headers
009 injectors ( 42.5 lbs per hour )
TE44 Turbo
Kenne Bell Front Mount Intercooler
210-205 cam
Hi Volume Oil Pump
3 inch Down Pipe
Flowmaster Exhaust
LT1 MAF with translater
SMC Alcohol Injection
I am not sure what chip is in the car. I have ordered an extended chip just in case it isn't one. This setup was on the car when I bought it. The motor was rebuilt 1200 miles ago and have not had any problems till this happened.

 

[salvageV6]

Did you clean out the seat for the IACV pintle? Could be a chunk of old threads casing from the fragged original IACV stuck in there. Or just dirt/carbon.

 

[Razor]

Ahhhh still messing with those 009's...

Get the 50's and I'll set'm up for you...and get the car idling like a northstar Cadillac..

 

[Danster]

I have a much smoother idle when my IAC counts are between 10 and 20, preferably 15.

Dannyo