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Check under car for water leaks. Check the pump make sure the seal is tight,listen to the pump while the car is running and see if you hear any noise from the pump. This could be a sign of broken blazes.Finially pull off the upper hose to the water pump start the engine and see if the pump is working. If it is, check the thermostat it may not be opening to let the water pass through.

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Q: How do you know when you need to replace water pump?
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