Where is it located and how easy is it to replace? My DTC scanner said this was the reason for my check engine light.

Happy New Year !!

 

HI!... The 4.6 and the 5.4 have them in slightly different locations. The IAC looks like this :



On the 5.4 it can be seen mounted in this location :

 

those pics show the idle air control valve but he's asking about the iac sensor. is there an iac sensor?

 

HI!... He's asking about the IAC which stands for IDLE AIR CONTROL!!!!!!!!!!!! It's all one unit. Sensor and all. This is what controls the idle on our trucks.

 

they carbon up and cause a rough idle. i removed my IAC, cleaned it and reinstalled it. it fixed the idle problem.

 

And


Just disreguard this if you don't have a 5.4 Liter.

If You do, The IAC is the the part circled (apparently) It's about $40 to replace at almost any automotive store (Discount, Autozone etc.) Or You could clean the sensors (After Unbolting) With Electrical Contact Cleaner...

It's due from a prolonged build up of carbon dust coming from your Engine, therefore if cleaned, it will only last you so long.

Hope this helped in any way possible... Peace

 

I just replaced mine a few weeks ago....cleaned it to no avail ended up just buying a new one.........

 

Cleaning only delays the problem. It helps at first but ends up faulting again. I cleaned mine on my 01 and it became a problem after a month. I remember a while back somebody was selling them on ebay for around 10-20 bucks. I remember a guy on here bought like 3 or 4 to stock up. They are usually around 40 bucks to replace.

 

Thank you, looks like it is behind the throttle body on a 5.4, this picture helped me.