Fuel Pump not shutting off - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

mmtmatrix · 07-14-2006, 11:05 AM

Hello everyone, for the last few weeks, I have noticed at random times when working on the car, that I hear the fuel pump on in the tank of my S13 (KADE swapped into a 90) come on for a few seconds maybe 10 or so, like its priming the system. It doesn't matter if the car was just run, or if it has been sitting for a while. Wondering if anyone else has experienced this? Any ideas of what it could be? Fixes? Dangers (other than draining the battery)?

Thanks,
mmtmatrix

kandyflip445 · 07-14-2006, 11:26 AM

You could try a new relay. You should be taking the battery cables off when you work on your car anyways. Safety!

spdfreek0o · 07-14-2006, 11:29 AM

Not much help, but I had similar experiences. A couple times a few months ago but hasn't happened since. It would happen right after I shut off the car after a drive. Fuel pump would shut off for a couple seconds then it would kick back on for about 10 seconds, a high pitched whine like it was pushing alot of fuel. I've got a 195 walbro if that helps.

Indolent · 07-14-2006, 07:27 PM

Quote:

Originally Posted by kandyflip445

You could try a new relay. You should be taking the battery cables off when you work on your car anyways. Safety!

relay.
turning the key on the acc position triggers the relay establishing the connection/power to turn the fuel pump on

07-14-2006, 11:05 AM	#1
mmtmatrix Leaky Injector Join Date: Sep 2003 Location: Currently So Cal Posts: 97 Trader Rating: (0) Feedback Score: 0 reviews	Fuel Pump not shutting off Hello everyone, for the last few weeks, I have noticed at random times when working on the car, that I hear the fuel pump on in the tank of my S13 (KADE swapped into a 90) come on for a few seconds maybe 10 or so, like its priming the system. It doesn't matter if the car was just run, or if it has been sitting for a while. Wondering if anyone else has experienced this? Any ideas of what it could be? Fixes? Dangers (other than draining the battery)? Thanks, mmtmatrix

07-14-2006, 11:26 AM	#2
kandyflip445 Post Whore! Join Date: Sep 2002 Location: Arden, NC Age: 40 Posts: 4,460 Trader Rating: (1) Rides Gallery: kandyflip445 Feedback Score: 1 reviews	You could try a new relay. You should be taking the battery cables off when you work on your car anyways. Safety! __________________ My 240 vBgarage

07-14-2006, 11:29 AM	#3
spdfreek0o Zilvia Member Join Date: Mar 2005 Location: Oklahoma Posts: 280 Trader Rating: (0) Feedback Score: 0 reviews	Not much help, but I had similar experiences. A couple times a few months ago but hasn't happened since. It would happen right after I shut off the car after a drive. Fuel pump would shut off for a couple seconds then it would kick back on for about 10 seconds, a high pitched whine like it was pushing alot of fuel. I've got a 195 walbro if that helps.