High idle issue with ICV and MS2

[BMWManiac]

Wanted to bump this....seems that I cannot run A/C without an ICV, so now I have a tune for summer, but would like to solve this mystery. I will reinstall my old ICV and see if the problem continues. There are no vac leaks....if I unplug the ICV, shouldnt my idle drop or will the vac flow itself force the gate open?

[BMWManiac]

Still no resolution...running off no ICV and opened the TB about 5%....idles great, but I'm sure in winter it will get worse

[BMWManiac]

Yes, but why? They are both brand new....issue started with my old icv, which is why i replaced it

[nightbear]

the ICV could get stuck open

[BMWManiac]

The car has run great for months. Out of nowhere, it now wants to idle at 3k rpms....replaced ICV, no change. Removed ICV and now use the idle screw....idles like a dream between 900 and 1000 rpms with 5% tb adjustment....thoughts? Is there a driver or something in the MS2 that controls the ICV that could go bad?