Yeah, I'm thinking it's mechanical rather than a vacuum leak. I used 1/2 can of starting fluid looking for one. Also, like you said thompsoj22, it is only doing it upon warm up, before that it seems like everything's fine. Squeezing the lines sounds like a good plan. Also I'm going to look further into the solvac unit. Another thing is that it seems like the longer I run it, the worse or higher the rpms go up. I wonder if there's a temperature sensor that is responsible for idle control? This morning I drove the 5 miles to work.. it was idling fine. I turned it off.. fine. Started it right back up, the rpms were at 1700 and wouldn't kick down, even after I gave it a minute, then it dieseled a bit when I turned it off. Will do the line squeeze and look into solvac. Thanks.