Te first obvious question is the coolant level full with no air in radiator, loose serpentine belt, is the cooling fan running, especially at idle . What are signs of a bad water pump?
Five Signs Your Water Pump Is Failing
- Overheating. A dead or dying water pump cannot circulate coolant through your vehicle's engine and, as such, the engine will overheat. ...
- Coolant Leaks. Coolant leaks from the water pump are common and a clear sign that it's time to replace the pump. ...
- Corroded Water Pump. ...
- Whining Noises.
I would look at a new water pump. the impellers are stamped steel and erode.
https://itstillruns.com/install-water-pump-saturn-6674985.html
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