Originally Posted by ordway.dc

This problem has been solved.
I purchased a new EGR valve and found that it does not allow vacuum across the valve with no power on the plug. So I installed the new EGR valve, cleared the codes, and all is well.

In addition I have a clean MAF, Clean TB, New Breather Hoses, New MAF Seals, and a New Crank Position sensor. Should be good for a while now!
In all, I don't think I spent a lot solving this. Most of the stuff I did would be considered extended maintenance. In other words, all of that stuff needs replacing when your car is approaching 100K miles as mine is.

Also, I wanted to thank everyone who helped me solve this problem; especially tikara, samaritrey, moviela, quadcammer, blzdout, and 2subway.

Originally Posted by ordway.dc

The quickest way to toubleshoot this is to remove tube b as shown in in post 19. If the car runs normally with that tube off, then I would replace the EGR valve. In my case it was the Valve Y31/1 that failed. I doubt cleaning would fix that, but you could try.