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It's Fixed,,,for now. Eliminated it and it's water supply.
I took the Idle Air Control Valve off and cut a gasket that blocks the IACV passage into the upper T.B.
The ICS still has air passage and functions.
Truck runs good and has never idles so smooth.For years it has really never idled quite right as I had to keep idle screw cranked closed. THe IACV was partially working all that time, but I guess when I hit that bump on The Carrizo Plains in Oct. it must have knocked the last of the wax out of the valve.
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I took alot of pictures of the guts and passages of all the T.B. and IACV, and ICS.
I'd like to post those picture into it's owe thread to help others with what seems to be a common problem with these aging rigs.
(I gotta yet figure out how to post them here, petiful).
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Getting those phillips screws out was a real PITA , I had to end up propane heating them, p-blaster, and micro impacting.
I put the IACV in the freezer and then boiled it to see if anything moved. Nope , it's outta wax.
As soon as I can find a junk IACV I'll do a complete disassemble(with pics) of it and make a more permanant version of this "eliminator kit". Other than the freeze out plug , the interior parts are threaded into the aluminum body. Maybe the is a way to rebuild.