"Steve B." wrote

> >Hi, we have a 92 Pontiac Grand Prix with a 3.1, 6 cylinder, auto, a/c.
> >The water pump made a worn bearing sound, leaked coolant and showed
> >high temperature at the panel. Today I replaced the pump but the car
> >still overheats in about 5 minutes of idling.
>
> Since you pulled the thermostat and did the hose test we can assume
> their isn't a blockage. Are you sure you have the right water pump
> and that the impeller is firmly attached to the shaft? It almost
> sounds like your impeller is loose so you aren't getting any water
> flow.

Maybe the old impeller disintegrated and the pieces are blocking the water
passages from the pump? Or was it Ford pumps that did that?