BA Mustang

Yeah that definitely isn't the CAI. That is a vacuum leak or the IAC is going out.

A way to tell if it is the IAC is with the engine running at idle and warmed up, unplug the sensor. If it doesn't stall or have the idle drop significantly then it is going bad.

dj050894

what does IAC stand for and where do i find this sensor?

shurtual86

Idle air control, it will be on the throttle body.

dj050894

how do i test it?

BA Mustang

Second half of my post above is a way to test it

dj050894

does anyone have a pic of it so i know what to unplug

shurtual86

Carefully when removing it because it has a very thin and fragile gasket.

dj050894

so i have to take that whole thing off whial the car is running?

BA Mustang

No, if you look at the first picture. The spot labeled C is a connector for the sensor. While the engine is idling and warmed up unplug that.

Dbranham

Litterly just made this, my iac is bad just hard to tell in the video

Note mines is a cobra an is located in a different place but same thing

http://youtu.be/dgIDXvIz7_w

Oh yeah this topic helped me! Thanks TMS!

dj050894

does it matter if i did it when it was already warm? i did it after i drove back home and it stalled when i unpluged it

BA Mustang

Yeah having it warm was a recommendation, an it seems to be working.

dj050894

so this is what im thinking, the previous owner probally had a tune on it and when he traded it in he returned it to stock so he could keep his tuner, and that is probally throwing some stuff off