Im having the code P0507 pop up in my 2003 Evo 8. My idling will vary anywhere from 900-1500 (max). When i turn the heat or AC on it goes down very low ( 400-500) and feels like it wants to stall out. It does have a tune on it, but I was told it isn't the tune and it is probably my IAC sensor. Is there anywhere to get one of these cheaper than $300? or is there another fix to my problem(s)? Thanks.

 

did they use the tephra patch? maybe they forgot to calibrate the idle when AC load is on

 

I am not too sure. I am definitely getting a re-tune in due time, but I also need to get a sticker for my car and the CEL wont stay off because of the idling.. whether I turn AC on or not.

 

Any input on where to get an IAC sensor not for "$300"

 

https://www.evolutionm.net/forums/ev...ge-my-isc.html