Hello, those caudalimetters fail a lot, it is one of the most sought after pieces in the scrapping, which I do not advise you since that of another car can be in the same state as yours.
Mounting it is very easy only are two flanges, but you will not be able to erase the fault codes, so you will be at the same point as at the beginning.
He who stops has me bewildered, enjoyable to be disconnected. Normally in breakdown it takes defect values and does not work correctly but works.
Try first to change the caudalimetro in a workshop, more than anything to erase the fault codes, the workforce of changing the maximum flow must be 0.5 hours.