Hello and thank you for using JustAnswer.com
Did you try cleaning the throttle chamber and performing a idle relearn?
yes I clean the throttle but I don't known how to do the relearn.
Lets try the relearn. Here is how it's done.
If you haven't performed the idle relearn after replacing the idle air control, then the car will stall. The idle relearn needs to be done so the computer can control base idle.
will the relearn solve this problem even thou the idle control motor was replace 8 months ago?thanks for the relearn prosedure.
it may, but that needs to be done when the throttle chamber has been cleaned and when the iac has been replaced
But you have to start there.
Your welcome and thank you for using JustAnswer.com.. Thanks Jay!