Love to help you out, I know how frustrating this can be. When I did my glow plugs I broke one of the wires to a transducer for the flaps. Drove me nuts, finally paid the DIAG fee at the dealer and had them fix it. Closest to you I will be is Fairfax on July 31 and Aug 1, then again on 2nd to 3rd for work.

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Dennis
2006 E320 CDI Black/Black Leather. Nav, HTD Seats HK stereo 32000 miles.
2000 VW Passat 1.8t 300,000 miles as of Dec 09, 2009 original owner
1997 E300d Silver 300,000 miles As of Jan 05, 2010
3rd owner SOLD