the car refused to rev when pressing the accelerator and the engine management light came on. The AA told me it was the accelerator pedal. 1 of the 2 sensors in the actuometer had failed. I purchased and fitted a new pedal but this has only partly solved the problem. I can now rev the engine but there is a lag at one point. The warning light has remained on but does go off at the point where the engine lags. I have tried disconnecting the battery to reset the ecu but with no difference. What am I missing?