'79 280zx problems... again

[DoctorRobert]

No, the car does not restart immediately. I notice that on the '81 AFM that I bought that someone had drilled out the air/fuel mixture adjustment plug. So I have no idea if that one is even good or not. And the car, when it did run, certainly didn't run well with that AFM. I'm leaning towards maybe a problem with the fuel pump. Except that while the car wasn't starting one time I took the fuel line loose and it was pumping fuel out, so I know for sure it was pumping fuel at that time it wouldn't start... I don't know.

[bbrownx]

My z had some similar issues when I first got it. The biggest change in starting/running better was when I swapped the ECU. I later replaced the CHTS, but I believe the ECU made the biggest difference - just an idea to try out.

[blackice280zx]

I have never had to replace the ECU but not unheard of. I got that other zx that was doing the same thing the OP's car is doing I replaced the fuel pump relay and It has been fine. Knock on wood. I will keep you posted b/c it is not a regular thing like he stated.