The only thing is that when the car is stop idle stay at 1000 rpm?

Hi. I have an 89 325i. Today I just change the idle control valve and the idle its much better. The only thing is that when the car is stop idle stay at 1000 rpm. How can I calibrate the idle in 700-800 rpm?
The idle has a really small movement, lets say from 1000 rpm to 1050 rpm, is it normal? Or should I suspect some thing is wrong?
Another thing, with this new idle control valve when I open the switch the valve has a small sound, do you know what can be?
Thanks

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[Kerry at Pelican Parts]

Is this a two wire ISC or three wire? The two wire design should have approximately 450ma passing through it so you have to connect an amp meter in series. The three wire ones usually have power on the middle pin and pulse to ground the outer pins. One to open the motor and increase rpm the other to close the motor and decrease rpm. When you say open the switch do you mean the idle position switch in the TPS? You also may have a vacuum leak that can cause the possible lean surge you are describing.

- Kerry