I wasn't getting vacuum when it was just idling. If I revved it up and created the right conditions, then it would start to pull vacuum. I watched the snap-on tool we have to make sure it was calling for the egr to open, and it would only create a vacuum when the computer was calling for it. I haven't had a chance to do the vacuum test manually yet, but I'll relay the results. In the mean time the stupid light has gone out again so who knows.
