I know its been a couple of days since your last post. But, when you wrote that at the dealer everything appeared fine, the first thing that occured to me, is that: "a bad wiring harness will do that".

Mine was bad. Before it was replaced, it took the ignition module (not cheap) and a coil with it.

If you do a search for the above mentioned, you will get a good amount of info.

Good luck!

-Larry

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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