I am pleased to report that the Guzzitech.com came to the rescue and solved a perplexing problem of the continually increasing idle problem. I brought the fixes to my mechanic and as of the last 50 miles or so, I have a normal idle all the time. He did the shutting off of the vaccume lines to the evaporator box as instructed. It must have tricked the stepper motor or something. Either way it worked. Now I kind of miss the errant revving. On second thought.....