where is the fuel pump relay on a 1977 280z

[CAMS280z]

cant find the fuel pump relay on my 280z

[Skib]

it can vary sometimes.

 

but check under the passenger seat.

[CAMS280z]

i checked its not under the passenger seat.

[CAMS280z]

i had replaced the fuel pump i did not replace the fuel pump relay so my car its not starting up could this be the problem

[ggzilla]

The fuel pump relay does not need to be replaced with the fuel pump. It is only replaced if it fails, as normally it will last 100s thousands of miles.

 

When you turn the key to ON (engine off), you should hear the pump purr for about 1.5 seconds. Do you hear it?

[CAMS280z]

the pump is not powering on so i think it is the fuel pump relay.so i ran a wire from the pump to the fuse box that works but still not turning on i think i need a new fuel pump relay

[ggzilla]

Maybe that was the problem in the first place? Why did you replace the fuel pump?

 

Think about this carefully, and test it out before you spend more money. Test the relay, it's easy. The factory service manual explains how to test it.

[CAMS280z]

where is the fuel pump relay at so i could test it i cant find it i have a repair manual for it i found it in the book but its not telling me where is it.

[CAMS280z]

if the fuel pump relay is bad would that stop the car from starting

[Hardwyre]

If you run power directly to the fuel pump, does it actually pump? There's a switch built into the AFM that cuts the power to the fuel pump if the engine isn't running as well.

[ggzilla]

Look for it inside the car, above the fuse box on passenger side. It's hidden up in there. Don't remember how to get it out so you can see it.

[datsunaholic]

On my '77 the fuel pump relay was on the DRIVER'S side, pretty much right above the ECU, but mounted to the dash frame. It's a double relay. It won't come on unless the car is running... or cranking to start. The way to test it is disconnect the starter solenoid and turn the key to start, the pump should run briefly. But even if it doesn't run, that isn't necessarily the relay being bad. Could be the ECU.

[Hardwyre]

First test; see if you have voltage at the pump when the car is being cranked over.

[CAMS280z]

there is only voltage when i run a wire from the pump to the fuse box

[ggzilla]

Conclusion: Could be the relay, or a bad wire, disconnected wire, or corroded wire connection. When you find the relay, you can see if the input signal changes when you put the key to START. If Input is good, but output is not then it's in the Relay itself.

[Hardwyre]

This is what Google is telling me regarding the relay's location:

 

"

I own a 1977 280Z automatic and the fuel pump relay is located above the kick panel on the right passenger's side floor in front of the door. You have to access it from under the dash.

 

Read more:

http://wiki.answers.com/Q/Where_is_the_fuel_pump_relay_located_in_a_1977_Datsun_280z#ixzz22BRtXJW2"

 

your fuel relay is behind and down from the glove box It should have Five pins, the fun part is... there are two others that look just like it. your manual should tell you the colors of the wires to find your relay

 

Here is a really well done color wire diagram: https://www.dropbox.com/s/yp315ike74pcxhp/F77ZCAR-WIRING1.pdf

[Hardwyre]

Also, I like the idea of using a cable tracker to track down wiring on one's car :)

 

http://www.classiczcars.com/forums/thread46159.html

 

[CAMS280z]

when i turn the key i dont feel the clicking on the relay at all