[RABarrett]

In order to simplify the troubleshooting here, bear in mind that the ECM controls the idle via the IAC. If the problem is extras air, as from a vacuum leak, there are no solutions in the world that will fix it until you address the air leak. Using a scan tool, check the IAC counts. I suspect that they will be close to zero, indicating an air leak. Typically, these are the result of the gasket under the throttle body leaking. Replace, if necessary, then allow the system to recalibrate itself. Ray