ECU problems

[Tim 76' 280Z]

I have a 1976 280z. The only way I can get her to start is to tap the ECU with my foot while starting the car. Can I just go pull a ECU out of another Z the same year or so and put it in or does it have to be a set one??? I have not pulled it out yet to see if its just a bad connection or not but we will see. Thanks for your input...

[zbane]

Since all it takes is a tap, I would imagine that you've got a loose connection or corrosion in there. May as well start with the easy possibilities and go from there.

[Tim 76' 280Z]

well i pulled it out this morning and it look great nice and clean and all connections good. im guessing im needing a new one. does anyone have one they can sell for a 76 280 auto?

[sblake01]

What's the number on your ECU? I have one that's from a 76. The number on it are A11-600 000.

[Tim 76' 280Z]

Yes Stephen that is the part number im looking for... its a cali ecu as well so that works too. My are is originaly from cali.

Edited October 17, 2008 by Tim 76' 280Z

[sblake01]

You've got a PM.

[Tim 76' 280Z]

Ok I got a new ECU for the Z. Plugged it in and she fired right up! BUT... I got out of the car and noticed a huge puddle of gas forming under the car back by the tank. So has fast as I could I turned the car off because I have a gas fernace in my garage. The leak just happen to be a bad hose coming of the fuel pump. Changed it. Then I put the old ecu in and tried to start her... thinking that mayed that bad gas line might have been causing the lines not to have a full vacum allowing the car to run boggish or even run at all. Well she fired right up. Had to set the idle and she running great...:stupid: Does this sound right??? Should I take the ECU back and just call it a day?

[Tim 76' 280Z]

Well I took the Z for a good run... she started bogging again. So I replaced the old ECU with the new still running bad. Im starting to think its the fuel pump now. I noticed that there was a pretty loud clicking coming from the fuel pump. So loud that I could hear it from inside the car. My problem is... I just be crusin along and bam nothing... car has died. Then it wont start. After tryin and tryin.Then it starts to smell flooded but I would think if its the fuel pump it would not do that. What do you guys think???

[sblake01]

I'd return the ECU if the seller will take it back. Have you run a fuel pressure check? What condition are your underhood EFI system connectors in? Especially the one that connects to the temperature sensor but if you haven't checked them and cleaned the contacts on the good ones and replaced any bad ones, your problem could be there. I'm not up to speed on the history of this car but did it sit for a period of time before you bought it? Not sure whether you mentioned that in another thread or not. If it has, you might have problems in the gas tank.

Edited October 22, 2008 by sblake01

[Tim 76' 280Z]

The car has never set for a long period of time.... what i know of. Its just going to take some looking around to see whats wrong this weekend. Its just strange that it will run great but then when you go out to drive it it just dies on you...:cross-eye

[Tim 76' 280Z]

Well I looked under the hood tonight but all the grounds look good and all the connections look fine. Im thinking its the fuel pump. is it commen for fuel pumps to come and go when they are going out? I have not checked the fuel pressure yet because I dont have a gauge.

[Tim 76' 280Z]

Could I get some pics of the temp gauge your taking about?