I took off the pump noticed it was covered in build-up...I eagerly grabbed the impeller to see if it was slipping.  It was so loose it fell off in my hand.   Hopefully the engine wasn't damaged by the 10 miles I've driven with no water circulation it never boiled over.  Also probably explains why the "flushing" of my cooling system didn't get much stuff out.

Nate - Madison, Wisconsin

 

56 Ford Customline Sedan