Thread: Electric water pumps in winter time.

Do you guys with electric water pumps get heat in your cars in the winter time?

Nobody using an electric water pump here?

I don't see why you wouldn't. Seeing as an electric water pump still pumps the coolant and as long as you still have you heater core hooked up and the hot coolant runs through it you have heat.

So Im confused because I heard rumors that the pump moves the water so fast that it does not get a change to absorb heat because the block is always receiving a cool charge from the radiator. I am not even sure if you can run a thermo stat with that set up can you? Would this put strain on the pump?

it being what, the heater core, the coolant? If the coolant can't absorb the heat, it's useless........

yes the coolant, I mean it does absorb the heat but there is other parts to the question because the guys I hear using the water pumps removed their thermostats completely from their cars.

Well yes, because the stock water pump is in the block, where as the electric pumps are installed between the radiator and block, so the thermostat blocks the flow of electric pumps at cold starts. Basically, electric pumps are on the wrong side of the thermostat, so it has to be removed. That won't affect the heater core.

I get what your saying so Technically the elctronic pump is not pumping when the thermostat is closed. I assumed that the electric pump built up pressure inside the lines forcing the thermostat open.

If you want to use an electric water pump the right way you have to remove the thermostat and get the voltage controller that controls the speed of the pump according to engine temperature. You are right...the car will not warm up correctly in the cold because without the thermostat and the controller the coolant will be circulating as fast as the pump can push it, and this will over cool the engine when it is cold out. You have to remove the thermostat to allow the coolant to circulate at startup so the motor warms up evenly......to avoid hot spots. The stock water pump circulates coolant throught the block and head even when the thermostat is closed. This is very important and needs to be addressed when using an electric pump. If the engine heats up unevenly something will break, warp, a gasket will blow out.....etc.

You could take off the stock water pump and weld in connections to connect the electric pump lines directly to the block @ the stock water pump inlet and outlet locations on the block. I'd like to see somebody do that! I thought about it but never followed through. You probably wouldn't need the controller if you did that. How ambitious are you?