Dek swap using 5th gen iacv. I recently did a clutch swap. Everything went well. I did not touch the iacv at all. I did move the battery of course and the small relay box connected to the battery tray.

Now with the car off after i drive the iacv keeps making a noise. If i unhook the battery the sound goes away. When i hook the battery back up it doesnt make any noise until i crank the car and turn it off again. Im fairly certain this is killing the battery. I searched and some have said egi relay? But mine doesnt click or anything like some have suggested. So im open to any info or ideas

 

Bump, any ideas. will a bad iacv just continue to make noise like that? i would think it didnt do anything but what do i know

 

To confirm it's the IACV you could unplug it after you shut off the car. If your battery isn't dead the next morning, you have found the problem.