Unplug ICV?

[RedReplicant]

What should the car do if I have a bad ICV and I unplug it? The idle varies a little bit occasionally with it plugged it and if I unplug it the car idles at 1k-ish perfectly with no variation. Bad ICV or is it something else?
Thanks.

[bmwman91]

Sounds like it is dirty. Clean it out with some rubbing alcohol.

[RedReplicant]

Well, if the big tube that comes out of the intake accordion goes to the ICV then I think I found my issue - it doesn't change idle when sprayed with starting fluid but I'm fairly sure the cracked tube is allowing unmetered air in regardless - I could be wrong.

I'm assuming I can run a tube directly from the intake accordion to the bottom of the ICV and leave the cracked tube in place to continue running coolant through the bottom until I have the time to do the full intake manifold mess cleanup.

[bmwman91]

Yeah, you can run a tube straight over. I do because the stock molded rubber hoses are crap and just break open causing vacuum leaks. Same goes for the PCV hose from the valve cover.

[RedReplicant]

Thank you :) I'll give it a shot tomorrow and see what happens. The idle issue is pretty intermittent so it's not a real 'issue' yet. :)