Everything will be fine the second and nothing will be fine

Hey, guys.
I've lost it, I'm a little new here, so beg your pardon.
Of course, I cleaned the LLRV instead of the LMM.
Only short-term improvement occurred.After a long journey yesterday, high fuel consumption again.
How can I test this thing?In the developed state, power up with 12 V???And then see if the roller turns, or is 12 V too much???Can there be a pre-resistance somewhere.
And another question about the lamda probe.After installation of Euro 2 excellent values at AU.Can it be that with warm motor the values change and thus wrong signals run to the ECU????Is a mass band actually remedying???
And who knows how to get the sunroof out?

Thanks people in advance

Frank