This is the frustrating mystery of it: I have tried everything from the TH fix to cleaning and then replacing the IAC valve, all to no avail as far as this "high revving" thing is concerned.
The dealer assures me the techs have inspected everything mechanical - throttle cables, cruise cables and what not - that could be implicated, and all is as it should be. The TB cleaning is the only thing that seems to make any difference, and even that is only a temporary cure - 4 or 5 thousand miles at most.
Beats the you-know-what outta me.
