In post #1 I ask a question. In post #4 I knew the answer. Now I don't know the answer anymore. I am leaning toward the muffler bearing idea. That is the only one that hasn't been disqualified. My muffler has a hole it it so that explaines why my 602 doesn't shut down when I block the port on the valve cover.

Happy NEW YEAR to everyone and I hope everyone has a better 2008 then any year before.

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84 500 SEL (307,xxx miles)