Electric water pump control | AEM
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clunkahollic
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Last seen: 5 years 2 months ago
Joined: 04/28/2015 - 09:34
Electric water pump control

I have a EMS series 2 for my Dsm, and I am switching over to an electric water pump with a dc motor. I have heard that AEM can adjust fan speed ( I don't know how yet) and I would like to apply the same adjustability to my water pump so it isn't on 100% all the time. Something like it regulates voltage to the pump based on coolant temp or something along those lines. I called AEM and they weren't much help at all but they did mention something about trying to use a solid state relay and adjusting pulse width. I don't want to use an external controller unless it is my last option and I want the car to be able to warm up with out hot spots in the motor/coolant. Thanks and sorry for being vague. 

 

AEM_NS
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Last seen: 36 min 54 sec ago
Joined: 06/06/2014 - 09:31
You'd definitely have to use

You'd definitely have to use an external controller/driver to drive a water pump.  None of the drivers in the Series 2 are rated to drive such a high current device.  What you were probably told by tech support was that you'd need to use the User PW 1 output to drive a solid state relay which then drives your pump.  That'd be the right way to do this.  Unfortunately, this isn't something we've done ourselves so we can't give you much guidance beyond that.

clunkahollic
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Last seen: 5 years 2 months ago
Joined: 04/28/2015 - 09:34
Thank you for the reply. I

Thank you for the reply. I know the ems doesn't have the ability to directly hook the water pump or fan to the ecu. I'm more or less looking for a solution as to how to control the pump/fan by using the ems. I have no experience with a solid state relay or what other hardware I might need to set this up. As for the software, I'm just as confused. I understand a relay either solid state or mechanical needs to be used. I would like to be pointed in the right direction. Thank you

 

clunkahollic
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Last seen: 5 years 2 months ago
Joined: 04/28/2015 - 09:34
I found this link for anyone

I found this link for anyone who reads this thread. It helped me understand what needs to be done greatly.

 

http://www.autospeed.com/cms/article.html?&title=Using-Solid-State-Relay...