My Baby is a little sick

[Burgenlander]

Dear Friends, My 96E300D has developed a slight flutter or mis in the 2100 to 2600 rpm range. This has happened after I took it in for a anti freeze flush at an independent but trusted garage. Whether that has anything to do with it or not I don't know but just wanted to say in case that could have done it. I have changed th fuel filter twice now, thinking perhaps water, I see no trace of water. Could this possibly be Injectors?I must say that it is not all the time but I would say at least 75% of the time . I notice no problem accelerating or at higher RPM. AS always any input will be appreciated.
Burgenlander
83 240 D
82 380SL
82 380 SEL

[mbdoc]

IF by flutter you mean SURGE then many of the OM606.912 engines have this problem. USUALLY related to the variable intake manifold control flaps(sticking).

[blackmercedes]

Is it really cold? Our diesel hasn't done this, but I have heard a couple other W210 diesel owners complaining of such behaviour on their diesels when it was -20 or colder. If memory serves, it was some flap sticking, as M.B. Doc has described...

[Burgenlander]

Is there anything other than taking it in to rectify the problem.Could a do it yourselfer try to tackle it?