Camaro Research Group Discussion > Mild Modifications
What is the purpose of a fuel pump relay for an electric fuel pump?
qwertyme77:
if you are looking for a factory style oil pressure cutoff switch, try the one that was used on the chevy vega. the vega used an electric fuel pump mounted in the tank. if my memory serves me correctly,( this was 30 years ago), when the oil pressure dropped too low, the switch would cut either the fuel pump or ignition circuit out so the engine would die, preventing damage to the aluminum engine block. the part number was 3986857 from 1971 thru 1975. it was a three terminal switch using a standard pipe thread the same as any gm oil pressure switch.
paul.
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