keitha1julie

89 Nissan PU won't run

I cannot find what is preventing the fuel pump from running. Voltage is getting to the positive terminal of the fuel pump motor, but it appears an equal voltage is going to the neg side of the fuel pump motor as well. That terminal is going to the on board computer. Is there some sort of sensor or signaling device that tells the computer not to let the fuel pump run through some sort of relay? Thanks!

Joe_F

Sure. Check autolibrary.org or a good service manual for a wiring diagram.