You did not state anything about a hot/cold engine. Engines shake more noticeably until at operating temp.

Perhaps you notice that shakes as the car is warming up but then notice it smoothing out when it reaches temp?

__________________
2009 ML320 Bluetec
1985 300CD
1981 300TD

Past Mercedes
1979 300TD
1982 300TD
2000 E320 4Matic Wagon
1998 E430
1984 300SD
1980 300SD

There is a fuse in my '80 240D for "Idle Stabilization" Im pretty sure it doesn't have it but the fuse box cover proves that it exists on some of these cars. See what you have and pull the fuse to see what happens.

__________________
http://i106.photobucket.com/albums/m...73378_30-1.jpg

Huh, I never noticed that, but my 85 has "Idle Stabilization" listed under #8 fuse, I have no idea what thats all about

__________________


1985 Euro 240D 5 spd 140K
1979 240D 5 spd, 40K on engine rebuild
1994 Dodge/Cummins, 5 spd, 121K
1964 Allice Chalmers D15 tractor
2014 Kubota L3800 tractor
1964 VW bug

"Lifes too short to drive a boring car"

Nope. There is no such thing as "idle stabilization" on a 240D or 300D/300SD....its all mechanical. On a 240, idle stabilization is that knob on the dash that mechanically raises the idle.

Only the 1986 300SDL and onward had an electronic idle control.

Your car probably has an incorrect fuse cover from a gasser W123 or something.

__________________
-diesel is not just a fuel, its a way of life-
'15 GLK250 Bluetec 118k - mine - (OC-123,800)
'17 Metris(VITO!) - 37k - wifes (OC-41k)
'09 Sprinter 3500 Winnebago View - 62k (OC - 67k)
'13 ML350 Bluetec - 95k - dad's (OC-98k)
'01 SL500 - 103k(km) - dad's (OC-110,000km)
'16 E400 4matic Sedan - 148k - Brothers (OC-155k)

Could it be the more dense air with colder environmental temps allowing for more efficent burn of the fuel? (AKA Natural Intercooler)

If so, Alda adjustment needed orr? Slight change in IP timing is needed orrr?

__________________
"Know other lessons I need to learn? TELL me. Tired of learning'em the hard way".

Glow Plug Wait: [i} Time of silence in homage Rudolph Diesel. Longer you own a diesel. more honor you give". [/i]

Life; SNAFU Situation Normal All Fouled Up, & FUBAR: Fouled Up Beyond All Repair

-Now: Snafued Jeep TJ w/OM617 2Be daily driver & building SS M1079 w/Ambo boxed /live in Adv. Truck, Diesel KLR conversion
-Sold 62 UNIMOG Camper w/617 Turbo, 85 300SD

Guys - my diesel has always run smooth under power, just shakes at red lights. But not for the last few days. Smooth as a baby's buttocks. Why - I have no idea. I like the idea of an idle stabilization fuse; with the answer had been that simple all these years.

It will get hot in Atlanta again and I will get the shakes again; sure as anything.

That was my guess.. After all, it does have a OM617 oil filter housing on it...

__________________
http://i106.photobucket.com/albums/m...73378_30-1.jpg

-- they purr when they know they are loved .

He actually stated that it shakes more at higher temperature. So does mine. I was about to change the engine shocks on the theory that as they heat up, the internal shock valves lose damping ability - but since your's are relatively new my theory become questionable. Driving around town, mine is pretty smooth. Coming into town after 60 miles or so on the highway and I've got a lot of shake. Maybe hot engine shocks is not the reason?

__________________
Charles
1983 300D, bought new, 215k+ miles, donated to Purple Hearts veterans charity but I have parts for sale: http://www.peachparts.com/shopforum/mercedes-benz-cars-sale/296386-fs-1-owner-83-mb-300d-turbo-rebuild-parts.html

He stated higher temperature WEATHER, not operating temp.

__________________
2009 ML320 Bluetec
1985 300CD
1981 300TD

Past Mercedes
1979 300TD
1982 300TD
2000 E320 4Matic Wagon
1998 E430
1984 300SD
1980 300SD

Observe exact same in the SD during summer. Now that it's cold out it doesn't appear to be doing it, coming to think of it. Any more theories?

__________________
'83 SD, 2x '85 SD
You are entitled to your own opinions, you are not entitled to your own facts.