best way to shut off fuel pumps?

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URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=127595
Printed Date: January 12, 2026 at 3:59 AM

Topic: best way to shut off fuel pumps?

Posted By: bjamick
Subject: best way to shut off fuel pumps?
Date Posted: June 09, 2011 at 11:39 AM

This is for a turbo car. It has 2 fuel pumps one will only turn once under boost. This will be done via Hobbs switch. Also I would like to add in a fuel pressure safety switch that will shut off both pumps if there is a failure. The ECM supplies 12V to the pump that will be for just driving around no boost.

So what would be the best way that I can shut off power to both pumps if the fpss see's a problem?

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93 mustang coupe

Replies:

Posted By: oldspark
Date Posted: June 09, 2011 at 1:59 PM

The ECM should control the pumps.

Otherwise pumps & valves are controlled by the charge light circuit, else an ignition sensing circuit.

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