One item you might want to check is for a vacuum leak. All the rubber plugs and stuff on the module sometimes wear and leak. If the change was sudden or recent this might also be the culprit.
The IAC motor is not that difficult or expensive to replace if you feel you need to do that just let us know. Hope this helps,
JP
Even though you are fuel injected you should have an idle screw,if not your IAC idle air control valve needs cleaning...take it to your trusted mech...Good Luck to you friend...Tim
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