Electric water pump
 

Spent the last few hours reading threads, and wondered how difficult it would be to convert the pump in my 2000 chevy malibu 3.1 to electric.

I could manage with a pump from a Toyota prius? They can be had for 70 bucks on eBay. In theory could just about any water pump work? Then, how would I wire it?

Obviously I could get the electrical connector for it and wire the positive to the battery and ground the pump? Would this create a situation where the pump constantly runs even when the engine is off? How could I wire it so that it comes on after cars been started?

Then would it be suggested that I use a resistor to slow it down so that it isn't running full speed all the time? Or do I want it at constant full speed

Would be nice as I've already deleted the ac system on my vehicle, wasn't working anyway. If I can switch to electric pump, then that allows for Mechanical pump, idler pulley and PS delete leaving just the tensioner crank and alternator config

I would suggest attaching a motor directly to the stock factory pump and bypassing the belt if possible.

The water pump only needs to turn at maybe 1500rpm, you can find a cheap brushless motor and RC plane controller to do the job, or even a brushed motor (I would go brushless for reliability).

Trying to lose weight in the engine bay so don't really want to go that route if I don't have to

Actually, you're adding weight either way. But, instead of adding a pump and a motor, you'd just be adding a motor. :)

Either way, you'd want some form of controller so its not running full tilt all the time.

I've heard of people simply wiring as described in the first post and adding a resister. Is this not possible?

Its possible, but its still just a single speed. If you want to do it properly and efficiently you'll want a controller that monitors a few things and modulates speed based off those sensor inputs.

And how much am I looking at? Don't want to spend over 200* bucks for this setup honestly and I'm aware it will only be a single speed action.

Also., any water pump could work right?

If you don't have a proper controller, you might not see any of the benefits an E-pump can bring, in fact you might go backwards.

A pump running enough to cool at WOT right from cold start will only slow warm ups, and with the T-Stat closed, that's a lot of load on the pump/motor/battery/alt.

Etc, etc.

I don't know why people are so insistent on DIY solutions when a Davies Craig setup is only a fraction over $200 and comes with a proper controller, warranty and adapters for certain engines.

Wheres this davie craig setup you speak of? got a link?

I assume one of the kits on his website.. just came across this one..

Electric Water Pump EWP80