EFI Problems

[zmaster]

I need some good help, no one from hybridz.org is helping me out muchwith just simple questions.

I have a 1975 280z coupe, and the fuel pump will not come on at allI have switched it to a 12v source, and it runs, and pumps gas. my question is what is the amp for the fuseable link for the EFI harness?

http://i296.photobucket.com/albums/mm195/hybridzmaster/EFIharness.jpg

thats all I have been trying to ask, and no one has an answer for me. so what are they going to do when their fuseable link blowswhen they are driving, and they need a new one, and they don't know what amp it is supposed to be??? oh and on top of that they just suspended my for 7 days, because I asked to many simple questions they keep saying are in my haynes book THAT I COULD NOT FIND!

Well I have called the nissan dealership, and there computer doesn't go back that far so theres a dead end, I tried google, dead end, and I tried my haynes book dead end.

I believe this could be the reason why my pump will not come on at all.

[zmaster]

Ok I think I have Finally figure out the problem. I did all of the tests on the ecu connector, and it turns out that all of my grounds do not read continuity, or battery voltage, the same goes for the ecu power input. My theory is if there is a bad ground the power input wount work ....right??? If that being the case, I will just rewire all of the grounds, and that should fix my problem.

[TomoHawk]

The ECU isn't responsible for turning on the fuel pump (I think.) The fuel pump is controlled by the EFI relays, the ignition switch and a set of contats ( like a snap switch) in the AFM.

Get a copy of the 280Z fuel injection book (bible;) there is a section on the fuel pump relay

(bible)

[zmaster]

I am way ahead of you I downloaded it and printed it out. But If the the ground is bad of the EFI relay, then It will not work properly....correct? have a brand new ignition switch, and the efi relay is a few months old, and new/ used AFM and tests at I think 201 ohms which is the 180 ohm specifications. so I have to check the grounds and see what the problem realy is.