2004 4.4 - Is the idle user-adjustable?

[X5Jay]

I'd like to increase the idle on my X about 50-100 rpms. Is there some sort of a mechanical adjustment on the valvetronic V8s? Will the dealer do it for me if I can't do it myself? I can't even find the carburetor on this thing!

[noncom23]

Why?

[xx3]

I ask too... why?

The computer automatically adjusts idle, depending on engine temp...

[X5Jay]

Mine idles at about 500 - 550 and I can feel a slight vibration from the engine while sitting at a light. If I give it just a tiny bit of gas, i.e. another 50 or so rpms, she's smooth as silk. I think the X5 idle setting is just another fuel economy thing (like the way the tranny doesn't shift to a low enough gear around a neighborhood corner) and I think the engine would benefit from a slightly higher idle, i.e. from less vibration. Most vehicles have a warm engine idle somewhere around 700 - 800 rpms which I think is better for the engine. Unless it's a loping Harley motor, 500 rpms is barely running...

[supersteve]

In a word. . .No.

Everything is controlled by the engine and trans computers. You can try re-calibrating your throttle body. It involves turning the key on and off a couple of times. The complete proceedure is list in the articles

[noncom23]

? Bad ICV

[vinuneuro]

J, aren't you still under warranty. It may be a sign of a bad iavc or motor mounts.