NSW Corvettes

Technical Tips => Electrical-Electronics-Air-Lighting-Guages-Security-Vacuum => Topic started by: Darylle on September 20, 2017, 08:40:44 AM

Title: Power to electric fuel pump
Post by: Darylle on September 20, 2017, 08:40:44 AM

Hi everyone
What is the best + source for an electric fuel pump, can I use the alt wire? 

Title: Re: Power to electric fuel pump
Post by: sirfixalot on September 20, 2017, 09:11:26 AM

Electric fuel pump feed has to be switched thru ignition should also cut off if engine stops ie in an accident usually uses a signal pulse from Tacho or an input from an oil pressure sensor on engine

Title: Re: Power to electric fuel pump
Post by: Vettech on September 20, 2017, 12:14:59 PM

In C4's the +ve is supplied from ign switch in crank position only, when engine fires/runs the +ve is supplied from the "Oil Pressure switch". This ensures if oil pressure lost or engine stops, fuel is immediately stopped. As Sirfixalot says.