Bad vibrations - diesel E-Class estate

When smoothly accelerating, my 2003 Mercedes Benz E-Class Estate 'shudders' and vibrates! There was no fault shown when plugged in to diagnostic computer, and it doesn't happen when accelerator is not engaged.

Asked on 16 October 2011 by Maurice Fermoy

Answered by Honest John
Reads like the Valeo radiator automatic transmission fluid heat exchanger problem.
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