The heart of the cooling system in a vehicle is the water pump.  It serves the purpose of circulating engine coolant through the entire system, starting with the radiator, then to the engine and back.  The water pump allows you to use air conditioning when it’s hot out.

The vehicle’s engine powers the water pump so that it works correctly.  It uses either a gear and chain system or a belt and pulley.  The pump generates power that goes to a shaft with an impeller.

The impeller circulates the coolant throughout the vehicle.  The impeller can be compared to a propeller that makes a boat move.

The impeller and shaft spin on a sealed bearing.  Checking this part of the water pump is essential because it wears out easily.  You can look for coolant that is leaking and an odd noise.  Also be aware that a wet engine is an indicator that you should replace your water pump.

If you notice any of these signs, it is time to replace your water pump.  Also, it is a good idea to have a road service program and used car warranties just in case of emergencies.  After all, you can’t always foresee when your car will fail you.