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.Continue Reading
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.Learn more about Car Parts & Maintenance
To install a new water pump in a Jeep Grand Cherokee, drain the cooling system, remove any hoses and components such as belts and fans, replace the water pump by applying a coat of waterproof sealer to the new gaskets, positioning the pump against the engine block and installing with mounting bolts. Check the pump to make certain it freely rotates before re-installing the hoses.Full Answer >
Replace a car's water pump by draining the coolant, removing any belts attached to the pump, unbolting the pump and installing the new pump. Be sure to properly install the gasket that came with the pump, and monitor the car for leaks upon first start.Full Answer >
A car's heater does not generate heat if the coolant level is low or restricted by buildup, if the water pump failed or if the thermostat is broken. The heater fan is also sometimes an issue.Full Answer >
Rubbing, whining and grinding noises coming from the water pump are signs the bearings are about to fail. If a water pump is making any kind of noise, it means the pump is likely starting to wear out; a good water pump shouldn't make any sounds at all.Full Answer >