Every time i try to fill up the pump shuts off as if the tank is full. I takes forever to get just half a tank and i have to go very very slowly. and i am not putting the nozzle in all the way ( just so you know). this is happening to both my cars not just the stang(02 Audi A3 TDI), and it just started recently. not sure what to do anymore takes half an hour to fuel up my car and its dang cold outside!