Even a normal-looking car is a work to be held in wonder. A very complex network of machines and other gadgets work in unison to make a car function smoothly. Most people would look at the car’s engine or brake system as a miraculous invention. However, the cooling system is way more important than these networks. In the depths of your car’s cooling system, there lies a crucial little component you might know as the water pump. This work of art ensures your car never overheats. This way, it prolongs the vehicle’s lifespan and indirectly boosts its performance.

A water pump works by constantly running coolant through the engines. This coolant is the key reason why your car doesn’t suffer from any major damage, as the coolant keeps running through the engine like an important medicine that keeps your car alive and well. Car owners might expect a water pump to last forever; however, these pumps aren’t built for life. They have an expiry date and may become useless after giving you 60,000 to 90,000 miles. In other words, you must replace your car’s water pump after three years or half a decade.

However, this blog will explore a few must-know facts about vehicular water pumps. You will learn how these pumps work and when they start to show the first signs of trouble. Only then will you be able to replace these bad boys at a time and keep your engine running for decades?

Water Pump

Car Water Pump Replacement Cost

How would you know if your car’s water pump needs to go and make space for a new one? A leak is mostly the first sign of water pump replacement. That’s why you should contact a spare parts provider the moment you notice the coolant leaking out on the front of your engines. What if it starts showing up on the sides?

Yes, even in this case, it’s a sign that your water pump has run its course and needs to be replaced. Some other signs that the pump needs changing may include the following:

·The engine gives off a whining or squealing noise

·It starts overheating way more than it usually does

·The coolant starts losing its efficacy sooner than normal

As explained above, you should replace the water pump after the car has run 60k to 90k miles. For older cars, drivers should stick with the lower figure of 60,000 miles. But if you own a brand-new car, then you can go along with a higher figure (or replace the thing after 100k). But don’t delay changing the pump; otherwise, your engine will sustain damage due to overheating.

An experienced mechanic can easily replace the water pump for $400 to $800 in most cases. You may need to buy a new gasket and coolants as well. If you add the cost of labor, it would amount to $1,000 in total. You should consider changing the timing belt and the serpentine belt, considering that you’re already spending around one grand on all these replacements.

So, if the two belts show signs of wear and tear (or approach a period where they should be replaced very soon), then don’t dilly-dally and get them replaced ASAP. Better safe than sorry!

Why does a Car Overheat after Replacing a Water Pump?

What should you do if your ride keeps overheating even after you’ve replaced a new heart and lungs (i.e., thermostat and water pump)? It happens to the best of us, and many car owners on websites like Your Mechanic ask this very question. We can think of a few reasons why this might happen to your car.

1. Wrong Coolant Type

You should use the right coolant type for your car. The manufacturer may suggest which type works best for your car. Suppose you don’t have a darn clue about which type to use. You should get in touch with a mechanic who knows the drill and has repaired the same car model before.

Their keen eyes will notice it quickly if you’re using the wrong coolant type. So, avoid using the wrong coolant type and extend your car’s lifespan.

2. Faulty Head Gasket

A bad head gasket is also the usual suspect in some cases. If the gasket gets blown, then the coolant may start mixing with engine oil. In this case, this mixture enters the system and starts overheating the engine.

3. Trapped Air

Even cars suffer from trapped air in the digestive tract. So, you should remove all the air from the cooling system before replacing the coolant. If the mechanic doesn’t do it properly, then the car may start overheating. Those in the know call it “burping,” and it is exactly what it sounds like burping the air out of the car’s stomach.

4. Heating Core Leak

A leak in the heating core causes air to enter the system. This infiltrating air overheats your car in some cases. This is why you should be cautious about such leaks and get them fixed quickly before they destroy your car’s engine from the inside out.

5. Faulty Radiator

It might be that the radiator is not working well. Even new radiators can be bad. It will not be able to set off the heat properly, which is another reason for your vehicle to overheat.

6. Bad Radiator Cap

There shouldn’t be a crack in the radiator cap. It causes the coolant to evaporate on its own, so your engine starts overheating. So, invest in a strong radiator cap for your vehicle.

7. Improperly Installed Thermostat

If the mechanic or the car manufacturer didn’t install the thermostat the right way, then it may lead to heating-related problems.

8. Corrosion

Overheating issues also stem from corrosion. A corroded cooling system will clog the system. Rust, after all, isn’t known to boost a car’s performance. So, clogging will block the proper flow of the coolant.

9. Impeller System

If the impeller design is defective or has not been installed properly, the cooling system will not work properly. As a result, the car’s engine may begin to heat profusely.

How Does a Water Pump Work In a Car?

The timing belt drives the water pump. Remember the timing belt? We recommended replacing it when it grows weary. It has impeller blades that keep spinning and pushing the coolant deep into the innards of the radiator.

The engine block gets access to coolant thanks to a timing belt as well. These blades are designed in such a unique way that they keep the coolant right there inside the radiator. These sharp edges also distribute the coolant evenly throughout the engine block. This is how a water pump works in your husk of metal.

buy car Water Pump

How to Test Water Pump on Your Car?

You will first have to set the transmission to neutral or automatic. Remove the radiator cap and turn on the ignition. Then, you should keep the engine running for twenty minutes or so to get to the working temperature. Now, see where the coolant is going. If it doesn’t make its way to the hoses, one of these three things has happened:

·The thermostat isn’t working right

·The radiator is clogged with debris

·The water pump needs to be replaced

Replace the radiator cap. Force a rag into the upper radiator hose and press the accelerator. If the coolant does not rush out, the water pump is faulty. Switch on the heater. If your car doesn’t overheat in this scenario, you should try checking the radiator, thermostat, or water pump for a possible need for replacement.

Suppose you replace both the radiator and the good old thermostat. In this case, you have no option other than replacing the water pump.


What did we learn in this discussion? Let’s do a brief recap of all the things we’ve learned here.

You should replace the pump after three to five years. Other reasons why your car might be overheating even after water pump replacement often include a blocked radiator, failed head gasket, lack of coolant, seized cooling fan, failed fan relay, failed fan control unit, and others. Car owners should get their vehicles inspected and have the right pump fitted there. Contact experts like Gearup Auto Parts to ensure your car is always in perfect working condition.