I will certainly check the O2 wires again. When I did so 2 years ago, they were perfect and the sensor was performing within spec. Still had the Code 17 though. The code finally went away when I adjusted the duty cycle.

Can the idle control valve be damaged by clearing the memory on the diagnostic module?

I only ask because the idle trouble and Code 18 started after doing so. Will the idle issue be corrected and the code disappear after the car rmanagement re-learns?