Grinding noise from water pump area

[87TTops]

So I just installed a new water pump a couple months ago. Lately I have been hearing a horrible metal on metal grinding noise, almost like a fire alarm bell ringing. It happens when I start the car up cold and usually goes away in a minute or two, except for yesterday when it persisted for an entire 5 minute drive. I tracked it down this morning and it seems to be coming from the water pump. Have I installed a faulty pump? Or is there something else going wrong in there? Coolant is full and I'm not noticing anything leaking from the weep hole, but then I haven't driven it much before I checked. Should I let it run for a few minutes and then check for leakage, or would it be apparent?

[danielsatur]

Remove the serpentine belt from the engine, this will isolate the water pump, power steering pump, and the alternator for the short.

[auto trainy]

also check the belt tensioner bearing.

[Tech II]

Also grab all the pulleys and rotate them with a little sideward force, and "feel" the bearings.....

[87TTops]

It's definitely coming from the water pump, and there is no play in the pulley in any direction. I will go on a small drive today to check for leakage, though not too long since I'm still dealing with a clogged catalytic converter till the new one gets here on friday. The last water pump was leaking enough onto the pulley and the belt that there was a streak on the hood insulation from coolant being flung all over it, but this time it's not so obvious.

[Tech II]

Won't be the first time you buy an aftermarket pump, and it fails......should be under warranty.....