Hi,

 

I recently changed my leaking water pump to a new one, seems to work fine coolant is flowing and temps stay at 90.
But after the change I started hearing some weird noise, that seem to be coming from some where around the pump area. This won't be audible on idle, but when you rev to aprox 2000rpm
it kicks in. To me it sounds like some metal parts are rubbing/vibrating against something.

Took of the air duct and pumps belt cover and checked the belt was dead center when I closed it after the install but seems to have move bit to one side.
Could the belt be too loose and cause the noise or did a just install a new pump with a bad bearing?
 

Here's a clip af the noise

Did you fit a new belt and tensioner, was the pump genuine, plus the VIN please?

Yes I did fit a new belt, there's no tensioner, the water pump is on the opposite side of the engine, same as seen here
https://www.youtube.com/watch?v=ESpTIdoGQ9M

Pump is an aftermarket part from Continental.

Can't remember the VIN of the top of my head sry.

 

Did tension the belt with a torque wrench to the 30nm spec like in the vid.

One more thing I do remember the new pumps impeller being relatively stiff to turn compared to the old one, but that obviously has wear
in it and i didn't think much of it, but if it turns poorly that might be the reason for it making noise/vibrate.