[ECU / Fuel Pump Problem]

Please let me know how you solve your problem. I'm still having the same problem, however I will change out my ECU with a known good one to see if that solve my problem. I went thru and cleaned all of my injector connectors due to some corrosion. I performed the same bench test on my fuel pump, and it worked, so we do share the same problem.My e-mail is hypetyme@earthlink.net

 

Tony

[WTB, factory '77 EFI ECU.]

I still need an ECU for a 1977 280Z. What is the part # & Lot number of the one you have? Some of the ECU'S have different amount of pins. e-mail me, hypetyme@earthlink.net

 

Tony

[ECU / Fuel Pump Problem]

My question is, can replacing an ECU with a replacement with a different part number, and fewer electrical pins cause the car not to function properly? I replaced the ECU in my 1977 280Z that has 26 pins with an ECU with 35 pins.

 

Would the exchange not work if the pin count is not the same? I'm trying to get my fuel pump to work? I was told that the ECU was bad.

 

The old ECU part number is A11-600-000. The replacement ECU part number is A11-000-000. The car is Fuel Injected.

[WTB, factory '77 EFI ECU.]

I'm looking for an ECU for a 1977 280Z. The portion that control my fuel pump is shorted out. Any recommendations welcome.

[Fuel Pump not working]

Power is only supplyed to the fuel pump when the key is in the start position (while it's cranking) and then once it's running, there is a switch in the AFM that supplys voltage. This is by design so the fuel pump will quit if the engine stalls. (such as in a wreck) so the thing doesn't sit there pumping fuel all over a hot engine. Some later models also have a low oil pressure cut off switch. There are a couple relays involved and running the prolem down will take a little effort and some skill with a meter and detective work. But whatever you do... don't do this

 

The system is design this way on purpose and for saftey. You should be able to put the key in the run position while the engine isn't running and pop the boot off between the air filter and AFM and stick your little fingers in there and raise the flap off it's stop and hear the fuel pump kick on. Parts america has the wiring diagram posted online, do a little searching and you'll find a link (sorry to lazy to do it for you) and check the system. Follow the wiring along, some of it runs along the floor and can get crusty. Make sure the wiring diagram is the right one for your car. They changed it up between years in 76 - 78

 

I had a brain cramp! What does AFM stand for? I know it's location, however can't recall the name.

[Fuel Pump not working]

The fuel pump on my 1977 280Z does not work. I removed the fuel pump and did a bench test, and the pump worked. I performed a voltage test on the wiring harness going to the pump, however with the key in the start position, I did not have power at the pump. I have yet found the fuel pump relay so that I can check it out.

 

Any advice welcome!