I have a 99 civic SI. I'm in the process of turbocharging it, I just installed a walbro 255 fuel pump. After the install, there isn't any power to the pump. I can run a hot wire straight to the pump and it works fine. Any suggestions? I'm doubting the main relay could go out over night, and I want to stay away from running the pump off a toggle switch.
thanks

 

I'm going to assume the stock pump was working fine? Do you hear the main relay click when you turn the key?

 

Yeah, stock fuel pump worked fine. But there's no noise when the key is turned. The fuel pump fuse is also fine.

 

Are you getting power to the relay? Is the relay good? Bad connection(s)?

 

On 95 s I think you jump out pins 5 and 7 at the relay and with key on, you should have voltage at the pump connector......99s may be the same......

 

ran a small jumper from one of the wires with power to the wire that powers the fuel pump and it kicked on. Took apart the main relay and there is a little corrosion on the board so thats most likely the problem.