safety cutoff for fuel pump

[bowtiemonster]

need to figure a way to put a safety cut for an electric fuel pump on my 83 El camino. you never know when you would need one like an accident or roll over, God forbid. What would i need and how would I wire it in. I know that I could put a oil pressure sensor on but where it would connect I have clearance problems with a t-fitting. any help is appreciated.

john

[TheSilverBuick]

Re: safety cutoff for fuel pump

Most are wired into an Oil pressure switch, engine stops, fuel stops. T-fitting on where your oil pressure sensor goes. I think you have to wire it also some how through the R? terminal on the starter to allow the fuel pump to pump while cranking.

[smallblockjay]

Re: safety cutoff for fuel pump

Most are wired into an Oil pressure switch, engine stops, fuel stops. T-fitting on where your oil pressure sensor goes. I think you have to wire it also some how through the R? terminal on the starter to allow the fuel pump to pump while cranking.

That actually doesn't sound like a bad idea. I would have said wire it with a battery kill switch, which would cut all power to the car. But the pump woud potentially continue to run until somebody turned the switch. I guess the oil pressure idea could be along the same lines as a nitrous kill switch using a fuel pressure switch.

[TheSilverBuick]

Re: safety cutoff for fuel pump

I think the oil pressure switch is insisted upon in the directions that come with a universal electric fuel pump.

[BlackoutSteve]

Re: safety cutoff for fuel pump

http://www.holley.com/12-810.asp



http://www.holley.com/data/Products/...199R9680-1.pdf

[CTX-SLPR]

Re: safety cutoff for fuel pump

Buick T-types came factory wired with this setup. Its common thing to bypass though with the upgrades to the wiring for the fuel pump voltage.

[CarPlayLB]

Re: safety cutoff for fuel pump

Assuming you have a mechanical oil pressure gauge, you could T the oil pressure cut off switch at the gauge. This will help keep the engine compartment uncluttered too!

[Falcon67]

Re: safety cutoff for fuel pump

Go find a mid 80's Ford in the yard and get the impact switch out of the trunk. Last one I got was $1. It's black with a big red button, uses two small thin spade connectors. Mine is fixed to the back of the trunk - no problem in the race car under normal use, shuts off the pump if the bumper gets whacked good.

[Tommygun]

Re: safety cutoff for fuel pump

I was about to suggest the Ford inertia switch, very simple and cheap

[DanStokes]

Re: safety cutoff for fuel pump

And you can use both in series. If either thing is tripped, the pump will quit. I've never actually tried this, but it seems like a good idea.

Dan