IAC numbers to high please help.

[xtremexnyc]

Last night i was trying to adjust my IAC to around 10 to 20. Its currently reading at about 40 at idle. I adjusted the throttle stop screw and i couldn't get the IAC counts to drop. I think i read some where that you need to shut the car down after each 1/4 or 1/2 turn of the screw? Is this correct? Or should i have seen a change in the IAC counts with out turning the car off. I'm going to try and do this again today and just wanted some pointers. TIA.

 

[Carolinaturbot6]

You're on the right track. After adjusting the screw a notch or so, turn the car off. Then turn the key on (engine off) for about 10 seconds. You'll probably hear the iac motor run & reset itself. After 10 seconds, turn the key off & then crank her up. As you know, you may have to do this a few times until you get the counts where you want them. This worked for me.

I really don't worry a whole lot about the iac#'s unless the rpms are too high for my taste. I believe the iac settings (10-20), aren't all that critical when it comes to engine operation. HTH

 

[xtremexnyc]

Thanks Carolinaturbot6 for your informaiton and help. The car is idle's fine right now, it ldle's at 800-875, TPS is set at 42. with the key on engine off and with the engine on it is at 44-46. Do you think i should just leave it alone? or should i go ahead and fine tune it to 10-20 for the IAC. TIA.

 

[Dan Thompson]

Take it out and drive it through a lot of stop and go driving. This will help adjust the IAC also.

 

[gnXfan]

Originally posted by xtremexnyc
Thanks Carolinaturbot6 for your informaiton and help. The car is idle's fine right now, it ldle's at 800-875, TPS is set at 42. with the key on engine off and with the engine on it is at 44-46. Do you think i should just leave it alone? or should i go ahead and fine tune it to 10-20 for the IAC. TIA.

Leave it - unless it's rough or stalling, <50 is ok.

 

[Carolinaturbot6]

I agree with gnXfan. As long as it's idleing fine as you say, don't even worry about it.

 

[dpok69]

My iac are at 30 John if it helps you any, and tps is the same as yours. I followed the procedure in Gnttpe,org site. It was a pain in the ass to do cause i had to loosen my uppipe to get at the iac plug each time.

You seen my car idle so ithink your on the right track, John

P.S. and no i have not installed the intercooler fan yet.

 

[xtremexnyc]

Hey buddy good to hear from you. Thanks for the help also. And you say your car idles rough. I think its pretty smooth from what i heard and seen Yup i thought it would be easy to get the IAC's right. It took me a while but i got it. I'll speak to you some time.

Take care and get that turbo replaced