The ECU automaticaly adjust the idle. The only thing that can be done is to adjust the screw on the throttle plate, but I wouldnt recommend doing that to much, being that it is set from the factory. Of course PO's tend to mess some things up if they dont understand what they are doing.
What is the idle at when at a stand still in neutral?
Also, your Idle actuator motor might be bad. It moves the screw ,i was telling you about, in and out to adjust the idle at start up and at normal idle when operating.
[FONT="Century Gothic"][B]I'm a more proactive person.
You spray the ants before they get in your house.
You plant the crops before you starve.
And you keep the terrorists in check before you get your *** blowed off.[/B][/FONT]