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Does the idde Valve, closes when throttle is pressed??
http://forum.diyefi.org/viewtopic.php?f=16&t=2382
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Author:  settra [ Thu Jan 23, 2014 2:10 pm ]
Post subject:  Does the idde Valve, closes when throttle is pressed??

hello forum. i was wandering. on electronic controled idle valves, does the valve, completely closes when you press the throttle? or it remains on the position it was before you pressed???

Author:  Fred [ Thu Jan 23, 2014 6:46 pm ]
Post subject:  Re: Does the idde Valve, closes when throttle is pressed??

This is a matter of taste.

Author:  settra [ Thu Jan 23, 2014 7:06 pm ]
Post subject:  Re: Does the idde Valve, closes when throttle is pressed??

i was suspecting something like that... cool! thanks allot :)

Author:  Marek0086 [ Fri Apr 24, 2015 6:12 pm ]
Post subject:  Re: Does the idde Valve, closes when throttle is pressed??

Yeah thats exactly what i wanted to know... for years!.

What kind of strategy do OEM's use?. I would be GUESSING that the IAC-valve would be commanded closed at higher rpm/load... so as to minimize turbulence/restriction in the throttle body?

Author:  Marek0086 [ Mon Apr 27, 2015 2:30 pm ]
Post subject:  Re: Does the idde Valve, closes when throttle is pressed??

... anyone?

Author:  Nige [ Sat May 09, 2015 1:21 am ]
Post subject:  Re: Does the idde Valve, closes when throttle is pressed??

No idea what OEMs do, but I prefer it to stay at a fixed open value before trying to command idle when you let the throttle off. It is just smoother in my experience. I want control over that value though. Larger throttle openings it doesn't really matter unless it's a massive valve I would think, even then probably doesn't matter depending on plenum design.
Like Fred said, whatever you prefer - which you will find out with tweaking.

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