Rotten egg exhaust smell is indicative of a rich fuel mixture. Only thing that I would recommend, since I don't know too much about these things (yet) is to check the wiring, and any gadgets that it goes to from there. There is a post that is fairly new, that talks about the EHA and another device that it works with... it may be of help.

-Larry

PS: also check to make sure you didn't accidentally knock off a vacuum line...I think there is one in that area. (I replaced my leaking EHA last year, and don't quite remember if there was a vacuum line in that area or not at this moment.)

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It is a truism that almost any sect, cult, or religion will legislate its creed into law if it acquires the political power to do so. Robert A. Heinlein


09 Jetta TDI
1985 300D