Safety shut-off for electric fuel pump

I just changed my '38 Ford pickup from mechanical to electric fuel pump. I know that all late model vehicles with fuel injection have electric pumps that have a safety shut-off that kills power to the fuel pump in an accident. Looking for suggestions of a safety shut-off that is readily available in the junkyard, compact and easy to mount, and simple to wire into the hot wire to the pump. Which donor vehicles should I look for?

 

Mid 90's Ford. Sometime they are in the glove box, sometimes in the trunk. They have a reset ****on and are smaller than a pack of cigs.

 

Exactly. I have a couple laying around as a rule. I never get around to wiring one in but the ford unit is the best in my opinion.

 

Thanks, plenty of mid-90's Fords in the junkyard.

 

Alternatively you could use a tachometric relay. Basically a relay that needs a signal from the ignition coil before it will supply power. So whenever your engine stalls the pump will stop after a few seconds.

Same deal when you start the car. Flick the ignition on and the pump will run for a few seconds then stop. Then once you crank the engine the pump will run and stay running with the engine. Basically makes an electric pump behave a lot like a mechanical one. Stops flooding etc if you leave the ignition on and the pump running

 

I think he wants it to cut off if the car is impacted, so the car will shut off and lessen the risk of a fire if he is in a collision.

 

I have a couple on my car

1. An oil pressure switch. Pump won't run unless there's oil pressure. So if the engine stalls or is shut off, so is the pump. Cheap via Speedway or probably any parts store. I have an over ride ****on to pump up a bit of fuel prior to cranking.

2. A solenoid valve that requires power to open. Mainly there to stop fuel from syphoning out of the tank when its parked but also adds a little safety.

Pete

 

+1 on the Ford inertia switches. Know anyone that preps demo cars? Removal is usually one of the first things they do on the Ford stuff, you wouldn't even have to go to the 'yards, might even be a better price - like free.

Ed