idles 5-700 frequently

[robg860]

Hello, I have a 99 GT, and it always falls on its face when idleing. Can the idle setting on the computer be adjusted when doing a custom chip?? Thanks.
Car is in stock condition and a 5 speed.

 

[daver01]

i'd try cleaning or replacing iac. mine was kinda doing the same when i bought it. i just cleaned mine & it has been great ever since.

 

[robg860]

i'd try cleaning or replacing iac. mine was kinda doing the same when i bought it. i just cleaned mine & it has been great ever since.

Dave is that idle air control?? Where is it, and how did you clean yours. Im down the road in Louisville, KY.

 

[downsouthman1]

Before trying that I would do a system reset just for kicks. Disconnect neg batt cable & let sit that way for 15 minutes. Then reconnect & crank engine. That could work but I wouldn't bet on it. My theory lies in that internal computer somehow lost your correct a/f ratio & must re-learn it.

 

[daver01]

thanks to jonjon for the pic. i cleaned mine with carb cleaner.

 

[robg860]

thanks to jonjon for the pic. i cleaned mine with carb cleaner.

nice pic. thanks for your help!!!!!!!!!