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-   -   Fuel pump won't stop priming (http://nissansilvia.co.uk//showthread.php?t=5951)

grahamhumm 29-05-2014 21:21

Fuel pump won't stop priming
 
Anyone help me I've pulled every relay possible and it still primes. Is there even one for it?? Plus my fuel guage won't work? Anyone please help Ive spent hours chasing this crap lol

CNHSS1 29-05-2014 22:07

std ET fuel pump 'prime' is a 5second timer, then cuts out. some of the scimitar guys that use ETs and have ECU driven fuel pump issues, wire the pump into and ign live via a crash switch. Pump then runs permamnetly when the ignition is on, but in the event of a crash the 'crash switch' senses big impact and cuts fuel pump

grahamhumm 29-05-2014 22:10

So you rekon it's constantly on live through the ignition?

CNHSS1 29-05-2014 22:18

is it recently happened or always been like it? if theres a short to earth it can make the pump run permanently as im pretty sure the ecu switches the earth not positive. On the scimitars the fuel pump cable has a shielding which is earthed one end only (ecu end iirc). if it earths the other end, that can make the pump run all the time

grahamhumm 29-05-2014 22:28

It's always done it, bought it as a project, it's one of my last things on my list to do


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