shuting of when reversing e36 also low power also heavey start

hi the bimmer family guys i need yo help my bmw e36 323i has a problem of shuting off when reversing also it has low power at times but mostl when in reverse i changed camsensor,cranksensor,fuel pump,injectors were checked,plugs changed,tank cleaned am now not sure what to do next help guys coz the daignosis is not showing any faults it onec showed the vanos4d fault but cleared it. it also has a heavey start.

shuting of when reversing e36 also low power also heavey start