I still have not found out why my 300SDL is stalling at low speeds
But I put in the old kilma kickdown to see if there was any differance and there is none

It only stalls at low speeds and only after I release my foot off the pedal at like 5mph or less it will idle along in gear and no amount of steering braking gets it to stall

Here is what I can tell you
the trans is shifting like crap since (or because)of this low speed stalling
The oil pressure bobbs when it stalls or is about to stall (not dangerously low but never did that before) it always idled at 2 bar and pegged when driving. I change oil filter housing O-rings everytime!!

Heres my ??? is it possible for something in the trans to "pull the motor down" into the stall
the trans is holding gears too long and some up shifts are followed by a down shift for no reason no extra force on throttle
and some shifts will rap up to 3500 4000rpm with just a smooth even pressure on throttle
then I let off alittle then it will up shift