Dear friends is very pleasant to me to address you and request them for a problem that I have with my motor vehicle Vectra 2.2 year 2001. First when I put my car in the fucionation and put this after several minutes after several minutes it emphasizes to move. Then when I put advance it undertakes the progress with all power but after four blocks it loses force and I remain with the engine running and although I accelerate it does not advance. I turn off the engine for five minutes and it works again as if nothing but after three blocks it loses strength and does not advance. This car the changes are automatic and I have a doubt if it will be the automatic box or sensors.