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Hello, my name is ***** ***** I am a professional here at Just Answer. I have noticed that your question was not getting a response and thought I would see if you still need help with this.I apologize for the delay and I hope I can still assist you with this here.One thing I would try is to give the throttle body as well as the IAC (idle air control) solenoid a good cleaning with some carb cleaner and a soft cloth. When doing so be sure to disconnect the negative battery cable. If after doing so and the problem returns then see if you can get the computer system scanned to see if there are any fault codes setting. Post back with the results and we can work from there.
Okay Bruce, let me know and we can work from there if need be.