Fuel Pump Wiring/Power Issue

[s13_chris]

Vehicle Description: 1990 Nissan 240sx HB. It used to be a automatic and is now a 5speed. It used to be a SOHC and is now a 98 Type X Sr20DET. It has a Apex'i SAFC, and Greddy Boost Controller.

Problem: No power going to fuel pump.Things I've Checked:Relays- OKFuel Pump Fuse- OKECU- No power going to fuel pump relayFuel Pump Wiring Harness- No power going to harnessFuel Pump- OK (tested)

I am going to end up buying a new ECU in the next couple of days if I can't figure this out. Its my DD and I need it back yesterday haha. Thanks for your help and I am going to be checking this frequently so if you need ANY information PLEASE ask. I will help in anyway to get this fixed.

[vancouverbc]

for my 1991 dohc the computer sends a ground signal to the fuel pump relay which in turn sends power to the pump. also, fuel pump is not always on so you obviously have to test when the pump will be on ie first 5 seconds of turning key on.
Modified by vancouverbc at 9:38 PM 4/18/2009

[s13_chris]

for my 1991 dohc the computer sends a ground signal to the fuel pump relay which in turn sends power to the pump. also, fuel pump is not always on so you obviously have to test when the pump will be on ie first 5 seconds of turning key on.Modified by vancouverbc at 9:38 PM 4/18/2009

I know you can only test in the first 5 seconds. I put the volt meter into the FP Relay hole and turned the key. Nothing.

I tested the fuel pump with external power going to the power wire so I know the fuel pump turns on. So, thanks for the help?

Anyone else?

[Bobby Drake]

im have the same problem with my 2004 350z did you ever find out the problem