I was just sitting here and thinking!!! The IACV just spins to adjust the amount of air flowing through those tubes right??? So should the little valve on it be open at all?? Mine runs just fine with that closed all the way, so I would assume that it changes its velocity to adjust idle and hold it steady, Correct??? I have it open a hair whick would allow outside air into the system! Maybe that is the cause of my idle being felt inside the car, as I have new motor mounts and tranny mount so I would assume that I should not feel the engine running at all in optimum tuned conditions! I can not even tell my C230K Sport Coupe is running so I assume that even the 190 was designed to be smooth at idle! Can anyone verify that the IACV knob should just be turned all the way in? Of course it makes me wonder why there is a knob there at all!

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~Jamie
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2003 Pewter C230K SC C1, C4, C5, C7, heated seats, CD Changer, and 6 Speed. ContiExtremes on the C7's.

1986 190E 2.3 Black, Auto, Mods to come soon.....