sometimes when i turn car off (key removed) the fuel pump continues to run it will only stop if i turn key back to run position and wait a second also if you don't wait and just try to start it doesn't want to start (maybe not pressurizing fuel system?) it is a random thing somedays not at all next day every time i stop, Ive changed fuel filter, fuel pump relay and no difference.going to change fuel pump next any other ideas?