Fuel pump relay output signal not working - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

crazy9ceguy · 07-07-2005, 11:25 PM

My sr20's fuel pump relay output isnt working, so the fuel pump doesnt turn on. its the black purple wire. there is power to the ecu though, what might the problem be?

projectRDM · 07-07-2005, 11:27 PM

Ground the wire, does the pump turn on? If so, the ECU's output is dead.

And it's black/pink.

crazy9ceguy · 07-07-2005, 11:47 PM

well we tested the fuel pump relay by hardwiring it somehow, and i heard the fuel pump. also i tested my ecu on my friends s13 sr20 and it fires right up, held idle, and revs to redline. oh yea, this happened when i had to replace my whole upper harness, then there was a small short and the EGI fuse blew, so i replaced that and still nothing.

07-07-2005, 11:25 PM	#1
crazy9ceguy BANNED Join Date: Jan 2004 Location: socal Posts: 658 Trader Rating: (0) Feedback Score: 0 reviews	Fuel pump relay output signal not working My sr20's fuel pump relay output isnt working, so the fuel pump doesnt turn on. its the black purple wire. there is power to the ecu though, what might the problem be?

07-07-2005, 11:27 PM	#2
projectRDM Post Whore! Join Date: Dec 2002 Location: Atlanta Age: 51 Posts: 13,812 Trader Rating: (12) Feedback Score: 12 reviews	Ground the wire, does the pump turn on? If so, the ECU's output is dead. And it's black/pink. __________________ FORMERLY R240NA Learn what's really going on and protect your assets now before they're gone forever: www.paypalsucks.com

07-07-2005, 11:47 PM	#3
crazy9ceguy BANNED Join Date: Jan 2004 Location: socal Posts: 658 Trader Rating: (0) Feedback Score: 0 reviews	well we tested the fuel pump relay by hardwiring it somehow, and i heard the fuel pump. also i tested my ecu on my friends s13 sr20 and it fires right up, held idle, and revs to redline. oh yea, this happened when i had to replace my whole upper harness, then there was a small short and the EGI fuse blew, so i replaced that and still nothing.