My mate from work has a ST170. The engine light has come on it and he said he did 100 mile to half a tank the other night. Does anyone have any ideas. We plugged the ford diagnostic tester in to check to see if the lambdas are working and they seem to be fine.

There was also another fault code which was for the inlet manifold. We the engine is reved you can see that the cable from the control unit is pulling the flap open in the inlet manifold.

Has anyone got any ideas.