I went to the pick & pull this past weekend and snagged a combo switch and cruise switch altogether, as well as a couple extra cruise switches, 2 cruise control electronic boards, and a bunch of other things for the '83 300CD turbo.

I put one of the cruise control electronic boards in and a new switch (mine was snapped off). All it would do was accelerate when the switch was activated. I put the second one in tonight and IT WORKS!!! I took her out onto the interstate and she holds speed very nice.

On another note, I ordered a couple of valve cover gaskets so I can set the valves and get the ol' girl to stop leaking oil at the valve cover gasket. She's not leaking much, but enough to coat the underside a bit. Also have a center support and drive shaft bearing ordered so I can get that replaced. The rubber is wasted. I did check the flex disks and they look to be OK.

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1983 Mercedes 300CD Turbo- 199,370 miles - Lapis Blau
1974 Mercedes 240D - 186,445 miles - Aqua Blau
1982 Volvo 244GL Diesel wagon - 168,956 miles - to be sold
1994 Chevy G30 6.5 Diesel "short bus" converted for camping, painted red white & blue & white stars 78,956 miles
JD F935 diesel front mower

did you ever notice a possessed 'clicking' from the cruise control amp / regulator?

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When replacing the valve cover after adjusting the valves, make sure that the cover touches the head all around (without the gasket). Sometimes people over-tighten the valve cover bolts and warp the cover. The gasket then doesn't seal well. I believe it's possible to unwarp the cover but I admit I don't know how – my mechanic did mine when I first had the '85.

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"Buster" in the '95

Our all-Diesel family
1996 E300D (W210) . .338,000 miles Wife's car
2005 E320 CDI . . 113,000 miles My car
Santa Rosa population 176,762 (2022)
Total. . . . . . . . . . . . 627,762
"Oh lord won't you buy me a Mercedes Benz."
-- Janis Joplin, October 1, 1970