Water Pumps: What You Need to Know

Water Pump

The water pump, often referred to as the coolant pump, circulates liquid coolant through the radiator and engine cooling system, and is powered by the engine itself. It ensures that the engine temperature is maintained at a safe level while operating. If it fails, the engine may overheat, causing serious damage if left unchecked.
 
How do I know it's time to replace my water pump?
A pump that leaks even a little is on its last legs, and one that makes rumbling or screeching noises is getting close to failing. Another sign that it's about time to replace the pump is when the engine temperature warning light is illuminated on the dash. Contaminated coolant and corrosion can cause seals and internal pump parts to fail.
 
Why do I need to change my water pump?
Water pumps generally don't need to be replaced unless leaks develop or the pump completely fails. An important exception to this is that some water pumps are driven by the timing belt, and not the accessory drive belt, and most mechanics recommend the pump be replaced at the same time as that belt (and vice versa). That's because both are hard to reach and require considerable time and labor cost to replace.
 
How often should I replace my water pump?
With any luck, you shouldn't have to replace a water pump even if you keep a vehicle for 10 years or more; they often last that long. Unless you see the warning signs listed above, there's generally no need to replace it unless you are replacing the belt that drives it.

How much should I pay?
The cost of repairs can depend on where you are as much as it does on what you need fixed. To get an estimate for your repair, go to our estimator, plug in your car's year, make and model information, add your ZIP code, and choose the repair you need. We'll give you a range for what your repairs should cost in your area.
 

 

More From Cars.com