150 is maxed out..whats the INT?? this is usually a massive vacuume leak. Shouldn't be when I came to see you your BLM's were low, and or right in the 120's....did you disconnect something and forget to hook it back up while messing with the IAC???? Also remember your TPS voltage is probably way off now. Glad to hear it was the IAC, figured that was it once we ruled out everything else.
BTW, after I finally got the gumption up I tore down the intake manifold, you were right it looked worse then it was. I did notice a couple of things.
1) there isn't enought RTV in the world to keep the front and back sealed without the rubber gaskets. Eventually it's gonna leak with just RTV..
2) good call on "the right stuff" rtv...I could tell immediately it would do well. It is thick and very sticky, almost like glue.
3) and most important, I noticed as I was putting all this together that the rubber seals and the valley pan meet flush. Looking at the two cardboard side gaskets and the way the valley pan gasket met so nicely with the rubber front and back seals I decided the only thing those side gaskets could possibly do is cause a gap between the rubber seals and the vallety pan so I did not put them in. Instead I coated the entire side of the manifold with a thin layer of the RTV, dropped the manifold in place and torqued it down.
I also applied a bead to the underside of the rubber seals, placed them on and let them set for about 2 hours. Then just before I put in the manifold I applied a bead to the the outside of the top of the rubber seals, and a glob in the corners. Crossing my fingers that this will stop my damn manifold oil leak.
T
