Well Guys dig this:
I had the same problem, it will almost die but not shut when you use the shut off.
I started looking at all links and guess what??. The links at the cruise control area were messed up and wrongly attached and the whole mechanism of rods was messed up including the Stop shut off. Now its just a little push and stops in 2-4 seconds.

MVK

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One penny saved is three penny earned.

1985 300D Turbo 179,000miles