Hey there, I have a 81 280z turbo that is in desperate need of help. I have had the thing for several years now it for about half the time I have had it, its been not working. Just recently I had the engine and the turbo rebuilt and and I instaled them myself. Now the poor car will run but it has a really ruff idle and somtimes will die. Also when its being driven the RPMs will go up and down in a very random pattern just like when its idleing. If anyone has any clue as to what might be wrong with it I would be eternally greatfull.

check the integrity of the connector at the air flow meter.