Originally Posted by tpf hunter
I have done some research and will have them look into the Idle Control Valve and the Throttle Positioning Sensor but why would any of those be impacted AFTER the car is driven?
Yes those things would, sounds like you did some good research.
Check those two out, Sometimes the Idle control valve just needs to be cleaned. They sometimes just get junked up.
As for the TPS, as the car gets old the voltage reading to the TPS gets lower, and can cause the throttle body valve not to open enough, and in return, cause a low Idle, IIRC
, the only fix is to replace it.
I might be a little off about the TPS, so anyone feel free to jump in and add.
And great data-logging with the dates and everything.