hello i have a 1999 ford explorer and i disconnected the computer cable with the battery still connected and the key was in the on postion by mistake and now it just cranks but no turn over ive replaced the battery because it was old and bad anyways and change the computer after and still the same thing i do notice i dont hear the fuel pump prime and ive tried two different code readers and one said error and the other said could read data anybody have any ideas