A quick update, I have since replaced my EGR completely with a cheap one off of ebay. Just yesterday I cleaned out the EGR tube using this tool. Just wanted to let everyone know, it worked ok, but could have been better. If you can find a little bit thinner brush that can snake through the bends in the tube easier, you will be better off. However, this one fits really snug and for the parts of the tube you can reach, it cleans it very well:
http://www.amazon.com/Herco-HE78-Tro...dp/B000EELFOM/
As soon as I replaced my EGR (about a month ago), it cleared the code P1404 (valve stuck open) but code P0401 (insufficient flow to EGR) popped up. Now that I've cleaned out the EGR tube, NO CEL!!! It feels weirddriving down the road without that light shining..
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