Q:

What noises come from a bad water pump?

A:

Quick Answer

A bad water pump can make a rubbing, grinding or whining sound. A water pump is relatively silent when it is operating properly. If it makes any loud noises, it is an indication that the bearings are going out.

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Full Answer

Another indication of bearing failure is coolant leaking from the water pump. The seals in water pumps are designed to leak when the bearings go out. Drops of coolant on the ground under a parked car can be the first sign that a water pump is beginning to fail.

Auto repair shops routinely replace water pumps. However, instructions for water pump replacement are available at About.com.

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Related Questions

  • Q:

    How do you replace the water pump in a vehicle?

    A:

    To replace the water pump in a vehicle, first cool the engine and disconnect the negative battery posts. Drain any coolant from the radiator. In complex cases, the water pump is located under the exhaust manifold. Take the radiator outlet pipe from the water pump housing, and then remove the housing itself before removing the pump. Clean all surfaces, including anywhere the pump was mounted, of debris and adhesive to prevent future coolant leaks, and test-fit the pump before attaching.

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  • Q:

    How do you repair a water pump on a Nissan Sentra?

    A:

    To repair the water pump on a Nissan Sentra with an E-series engine, drain the coolant into a container, and remove the power steering belt and power steering pump. Remove the water pump or alternator drive belt and alternator mounting bolts, and move the alternator aside to access the water pump pulley. Remove the water pump pulley to access the water pump. Install the new water pump and a new gasket before reassembling the engine.

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  • Q:

    What does it mean when my coolant leaks and my car overheats?

    A:

    Coolant leaks and engine overheating are usually caused by a failing water pump. Automotive water pumps are designed to leak coolant through weep ports as a warning that they are failing. Aside from overheating, a distinctive grinding or whining noise caused by a bad bearing is also a symptom of a bad pump.

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  • Q:

    What is a serpentine belt?

    A:

    A serpentine belt is a rubber belt with a ribbed side that drives vital vehicle components, such as the alternator, power steering, water pump, air conditioning and many other accessories in a vehicle. As a serpentine belt breaks, many critical vehicle functions cease simultaneously.

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