water pumps grinding

  • How to Tell if a Car's Water Pump Needs Replacement: 7 Steps

    Jul 26, 2019 · The water pump impeller can wear out, thus no longer moving coolant around, so your car overheats. To test this. Do a cold start with Radiator cap off,; you should see the fluid moving around some in the radiator. If not, then there is a good chance the internal water pump blades are gone or only a small amount left.