Found out what it was today, there is an air bleed valve (not sure of its purpose) on the bottom of the intake manifold that I could pinch off vacuum to and the car would idle normal. I gave it a good tap with a pair of pliers and it seems to be working fine now.
Now, I suppose it will do it again some day and I should probably know what it is supposed to do. It is on the bottom of the intake manifold and has a small vacuum line that comes from the top of the manifold that goes to it, it also has a large air line that comes up from it along side the manifold and tee's off and one goes to the throttle body, this line is about 7/16 ID or so. It has a pressed steel canister with a nut on the bottom of it, it has 6 screws that hold the pressed steel canister to the aluminum housing, the whole thing is held on by two 10mm headed bolts. Any ideas what it is??
Thanks
Justin