Can someone help please.
 

The engine management light come on my focus st170. I took it to some garage to have a diagnostic check. He said its coming up bank 1 and 2 sensors and intake control runner box. So i got 2 new lambda sensors and a control runner box. Fitted them took the battery off to re set. The light went off. When i started it there was clouds of smoke which filled the street so i guess they worked fine. I let it run for a bit turned the engine off and back on again and the management light came back on again. When i took it for a drive it was cutting out when i was about to stop.

Any reason why its cutting out ?

And have i got to take it back to a garage to get the management light re set ?

Cheers

Is the car behaving differently with the new bits on it then? or is it the same as before?

The car runs better it idles at 800rpm now rather than 1500 and is lots better on petrol. But it never cut out like it does now