Most people do not understand the function of the auxiliary coolant pump and due to its price some people do not replace it when it fails. This is absolutely the wrong thing to do. Most people think that the pumps just circulates water to the heater core to help get heat into the cabin quicker and while the pump does provide this function it also serves as the sole fail safe preventing hot spot or heat soak areas in the engine after it is shut down, that can lead to very expensive engine repair bills. If your pump does not continue to run after you have shut the engine down when it is running hot, then it has failed and you need to replace it before it leads to an even larger problem.

Unfortunately while these pumps are prone to failure, due to the nature of the environment they function, they are very easy to replace.

This is a project you can accomplish within one hour with basic tools and little technical knowledge, although you’ll come away from the project with a better understanding of what’s involved!

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Let us know what questions you have at anytime!