It's me Michael. Your worst nightmare is back already. I have been plodding through the testing. EGR, PVC, O2, TPS. I got to the IAC. My chiltons says infinity ohms on one side and 20 to 80 on the other two terminals. Alldata says above 20 on both. Go figure. I have infinity (0) on both. My friend says that infinity is absolute 0. I am not into ohms. Meter set at 200 I have a starting 1 that gos to 0 (infinity)? Do I replace, adjust or push the Trooper off the new Narrows Bridge? And could this be so important as to put the truck in a total preformance shutdown?

I did start the trooper when I had all kinds of things disconected just to see what I could get (it died). I did get a reading off the ecm (33) so I am starting to come over to your thinking. Whats the air pump (it must have a 3 letter abev.) called under the alternator? Is it important?
You've been a great help. Thanks Stan