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I would have posted this a lot earlier but I had a commitment to deal with. So, here's the results of my "dead cold" start:
8:00am, 31 degrees. The engine fired up just as soon as it always had, but the idle was a little lumpy, struggling, which disappeared the instant I applied a tiny bit of throttle. So then I hold the throttle open just a crack - just open enough to keep the idle steady. I did that for 30 seconds or so, then I let it idle without my help. Perfect. Smooth, low, and really quiet. Just needs the smallest warming-up period. I can deal with that.


31 degrees F is kids stuff. <img src="/forums/images/graemlins/smile.gif" alt="" /> I'd like to see what happens when it was -17 degrees F two weeks ago here. I can pretty much guarantee she would stall...several times...and probably kill the battery in the process. And in temperatures of that extreme an extended warm up, unattended, is pretty much required unless you want to sit there freezing while you goose the gas to keep it running. Not this boy. <img src="/forums/images/graemlins/lol.gif" alt="" />

Dave, to answer your question...that's why the IAC is there. It allows the engine to idle under all extremes. I think what this comes down to is that the old style IAC was trouble prone. Which is why we see a different type on later models. Unless someone wants to try this on the newer IAC I personally see no benefit. In fact, I see a regression because now you have a modern fuel injected vehicle stumbling and hesitating. I gave up that crap years ago when carburetors went bye-bye...as they should have.

1998 Sportage - Gone.
2004 Honda Civic Coupe.
2007 Suzuki Grand Vitara - She got it.