Nearly everyone has heard a washing machine with noisy bearings so if your car engine sounds like it has one of those inside you could be right. Waterpumps sometimes make a skreeeling noise too. Whatever the noise, if it is loud enough to turn heads it is time to panic. If the pump is driven by the timing belt ignoring such a noise for a second longer could cost you big.
Some pumps also make a sort of soft knocking noise just before the bearing collapses.
Some pumps start to leak before the mechanical integrity is at risk but some can hang onto the coolant until the pump actually breaks.
Jeff (above) is right and getting it checked out is best. Overheating can be difficult to isolate...
Water pump making noise , could depending how worn it is . Before you have a bunch of parts changed why don't you take it to a reputable repair shop an have checked out .
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