Strange sound like a waterpump trouble

[overlord]

Hi, I think I have I trouble with my waterpump on my 944 N/A 86.

First of all, I can't see the level of cooling on the tank between Max and Min so the level should be very low.
I will buy tomorrow some prestone for fulling the tank. But I think this will not change the situation...
The situation is: When I start my engine, everything is okay, no strange sound, nothing, BUT after some minutes I hear a sound like "Twick twick twict twick, from the driver side. Could this can be a problem from a belts (less tension = make this strange sound) or this can only come from the waterpump?

Thanks

Simon-Pierre

[SoCal Driver]

A bad water pump will make a rough grinding noise. All the time. You can take off the top belt cover, reach down and wiggle the water pump pulley up and down when it's bad.

I think you have a belt problem. Could be to loose or too tight or missing a tooth.

It's a time bomb.

[overlord]

I see some crack between tooht on the timing belt, this is normal or this is a weakness; sign to change the belt
Thanks

[Eldorado]

change that belt and retension.

how long has it been? since the belts and the pump have been done?