Focus St mk4 clunking Elsd,transmission

[fugleman]

Has anyone with the automatic 7speed on their Focus ST mk4/mk4.5 noticed a clunking/knocking from the transmission/Elsd when on and off light throttle (2nd or 3rd gear 20km to 50 km approx) -as if in bumper to bumper traffic on off throttle or approaching a round about coasting off throttle then on throttle again-sounds Just like a worn cv or excessive backlash in a diff.? It only occurs when the transmission/Elsd fluid is warmed up, when cold perfect.

Ford replaced the whole transmission with a new one last week(stating it was fixed) but it still clunks the same when warmed up. So i am suspecting it's the Elsd but before hounding Ford again thought i'd ask the forum.

>Have heard the borg warner FXD lsd can have noisy (chatter)clutch packs but that's when slow turning on tight corners, this is always.

Also do the Elsd run like an open diff(disengage) when off throttle and close/lockup(re engage say 10%- 100% as required) when back on throttle as they can adjust every 150ms??

thanks