Mercedes-benz 722.6 torque converter slipping

MB ML w163 270 cdi 722.661 torque converter slipping and vibrates. Trying to save it changing oils and filter but it doesn't helped.
"new" gearbox have now:
transgo shift kit
mobil 134 atf
febi filter
new kyb
new conductor plate

[@Veres1982]

worse or better when gearbox warm?

[@Allu89]

It was worse when getting warm

[@kon4014]

Oliko turbiinissa vika?

[@Allu89]

@@kon4014 todennäköisesti kyllä, mutta vaihdoin samalla vaihdelaatikon kun ne maksoivat käytettynä jotakin 400e paikkeilla yhteensä niin pystyin jättämään vanhan vaihteiston vielä varalle.

[@sambuka187]

Hi did you fix the problem?

[@Allu89]

I changed gearbox and torgue convertor to another used ones. Now it is working normally,but i dont like it anyway.
Needs tcu programmin to get it acting more like C or E series.
ML gearbox is too soft in my mind.

[@DakotaRaymond1999]

@@Allu89 what was reason for changing gearbox as well? Also did the do this everytime or only occasionally?

[@Allu89]

@@DakotaRaymond1999 reason was that "new" (used) gearbox cost 300-350€ so i think its better change both same time. New torque converter cost about 400-500€ and hydraulic unit also. There was metal in filter and magnet, so cant be sure if hydraulic unit is also wear out.
It started couple days before doing this but it wasnt this bad. When driving highway it seems to work fine, but under 80km/h and hills and acceleration was too much finally.
With cold oils was much better and when driving 5 minutes it started go worse.

[@derekkchung]

was there a code?

[@Allu89]

There was that gearbox is slipping and something else... Cant remember anymore.