Thanks, John - appreciate the help. On the Landiss page, there is reference to a test for the throttle valve switch - Job 07.3-121, from the FSM, I assume.

Any idea on where I can get this - or, any advice on further testing of the throttle valve? Would like to do some more troubleshooting, before spending the money and committing the time.

ryan

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RG Newell

1984 300D
1972 250
1986 560SL
1991 300CE