TT_Rex_7

Alrighty, i've been thinking about running an EWP (Electric Water Pump) for quite some time now, but have tried to avoid it due to the possibilities of it failing, leaving my engine to overheat. However, I'd like to avoid these remarks, and try and focus on a possible "fail safe system."

Just to get it out of the way before anyone asks, I'd like to run an EWP so that I can mount my GT40R in the location of where the stock air pump used to be. (3rd Gen.) Since the turbo is so large, it effects me trying to run hoses from the water pump to the radiator due to how I have my setup. The reason I want the turbo in this location is to clear my custom intake manifold, and still have room to run a 4" DP/exhaust. I also like the idea of being able to run the water pump after the motor has been shut down. And of course, there's the "bling" factor!

FWIW, I plan on running Meziere's 55GPM EWP.

So far the best solution i've seen is lights/buzzers that are wired up to the EWP, and go off if the pump stops flowing/fails. So lets say your just cruising at an avg. speed, (50-70 mph) how long do you think you'd have to pull over after hearing the buzzer before the engine was to overheat?

Although a light/buzzer is somewhat of a good idea, I still don't think it's all that much of a "fail safe system." So after a little bit of thinking, I was considering running two EWP's, while only having 1 running continuous. Then I'd have the second wired up to my ECU. I could then set the ECU to turn the second EWP on at a specified temp. Therefore, if the first pump was to fail, the ECU would turn the second one on after the motor began to heat up, allowing coolant to start circulating again. In conjunction with this, I could also wire up a light/buzzer so that I know wether or not it was the EWP that failed, or if something else happened.

So does anyone thing that this could/would actually work?!

I also came across this thread by GuitarJunkie28 ... https://www.rx7club.com/haltech-forum-62/its-impossible-overheat-my-motor-506001/

So who thinks that by tuning the ECU to do what's linked above, running a second EWP that's wired to the ECU, AND running a light/buzzer to warn you if the pump stops flowing would be considered a "fail safe system?"