I have a 1982 240d with 224k miles that I bought last year and has been stored over the winter. It started first crank after sitting for four months. The valves have been adjusted and it runs strong except for this instance. When warmed up and stopping with car in gear, (auto transmission) the engine seems to idle quite rough and shakes quite a bit. The problem does not seem to exist when the the engine temp has not reached normal which has been around 90C. I tried disconnecting the ERG valve but it still acted the same.
Any suggestions?
Thanks for any replies.

This could be quite a few things. But I would first look at the engine mounts, engine shock, and damper on the 240D
When they go bad this is how it can act. Try this before we get into the injectors, idle, etc.

Dave

PS And if your engine mounts are rubbery or compressed. Then the transmission mount is probably the same.

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1970 220D, owned 1980-1990
1980 240D, owned 1990-1992
1982 300TD, owned 1992-1993
1986 300SDL, owned 1993-2004
1999 E300, owned 1999-2003
1982 300TD, 213,880mi, owned since Nov 18, 1991- Aug 4, 2010 SOLD
1988 560SL, 100,000mi, owned since 1995
1965 Mustang Fastback Mileage Unknown(My sons)
1983 240D, 176,000mi (My daughers) owned since 2004
2007 Honda Accord EX-L I4 auto, the new daily driver
1985 300D 264,000mi Son's new daily driver.(sold)
2008 Hyundai Tiberon. Daughters new car

Just solved this problem in my 240D. Then I noticed th muffler shaking quite a bit, so I replaced the donuts for the muffler. That was a $12 repair, that felt good for a change.

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'10 Chrysler T&C Stow-N-Go White. Grandpa's ride.

'13 Chrysler 200 Touring Candy Red. Grandma's ride.

Age and cunning will always over come youth and vigor.