Originally posted by Terry Haines:
As I posted recently, a V6 with 42,000 had the pump changed for a metal one, plastic impeller was fine but the cone fell out...which do you think happens first...the cone or the impeller... 
Last month both my cars had shattered impellers and perfect cones. That doesn't mean that a loose cone can't happen and subsequently damage an impeller. Your example however tends to indicate that a loose cone doesn't necessarily cause impeller damage.
If you have to replace the housing, you are kinda in a Catch 22 since they come from Ford with a plastic impeller (allbeit a different color).
