Opel Signum 2003 2.2 DTI Automatic transmission.
I have mysteriours problem - when i starting run to forward and while going to the bigger left, then i have twitchning in transmission when sorting from 1 to 2 . (it's like transmission dont know when switch to the second level - it's like trying swtich to second level twice for free seconds.. ) When i going straight or right or more speed then 30km/h then is everything OK.
I am sure, that transmission is OK (is it after general repair ) So i dont know what can be connection going to the left and transmission switching.. ?
Do you have some one some idea?

Thanks Tomas ! btw. sorry for english