Car came in for regular service our apprentice broke fuel filter housing when changing filter, filter housing replace with genuine citreon part, road test car stoped after 300 meters leave for five minutes and restarts, have chack all connections and after lots of testing im lossing the 12 v feed to the low pressure pump and then it returns after 5 mins, if stantory the car can be reved steady and no problem but if u rev fast as blip the throttle it cut out as fule pressure is lost only code is Poo89 fuel pressure montering Have some live data rail pressure is 235 bar at idle and held at 2500 rpm its 455 bar any one know why im loosing fuel pump feed please help Wayne