[Brett]

I've had an impeller go bad a week after installation.
The rubber impeller separated from the core bushing.
The bushing was going round and round, the impeller wasn't.
No telling how old that impeller was when you bought it.
Might have been sitting on a shelf since 1985...

 

[FSUfisher]

Have you checked to make sure your pee tube isn't clogged or somehow disconnected? It is really just a check to know your motor is pumping water and the motor will run fine if it is clogged. Maybe you dislodged something while repairing the impeller. This is a very positive way to look at it, but it may be the case.