I did do the searches and found nothing similar (close but not quite). Here's the problem. 98 CSVT, start it up and it immediately revs up to 2700 then comes down to about 1200 quickly, might jump up to 1500 then slowly settles to 700. All this in about 5 seconds. Very annoying. Additional info I also I did the Ford moose fix for $80 this summer and have not had any problems since then (about 2000 miles ago) until just this past week.
Currently 75,000 miles, new ford short block engine due to previous owner water pump at (you guessed it

- 63,000 miles)
What's dirty? Or Broke? Or clogged?
Thanks