Originally Posted by
gregs78cam
I have been meaning to ask this for a while, I have an electric water pump on my Camaro, and due to the routing of the cooling system it takes forever to heat up because the water pump's flowrate. I would like to get the pump to run at say 25% at start up and stay at that speed, then from 150* to 190* ramp up to 100% as the temp rises.
I had previously thought about using a brushed motor speed control (ESC) like those used in RC cars, to handle the load side of the equation, and using a simple circuit to change the temp sensor output to a compatible PWM signal to control the ESC. But if this PWM control is cabable of controlling the pump through a solid state relay, that would be great. I was thinking of making a table of temp values and the associated PW or duty cycle that the ECM would command.
How hard would this be implement? I have been looking over your code, and parts are starting to make sense, but I still don't think I could handle it myself.