I have been working on my "77 280z getting some bugs out it. The last time it was driven was in 99. I have gotten the car to run pretty good, clean all my sensor connections and so forth . Yesterday for the first time I disconnected the ECU harness. There was alittle corrosion that I cleaned up, then I spayed it down with claener and use di-electiic grease. Now the problem.... I think. The car runs a tiny bit rougher now and I here a clicking sound from the passanger side compartment. It's cycles ever 5-6 seconds. And I hear my fuel pump run up with it. I'm thinking it's the fuel pump relay. Is it normal to cycle like that? At idle , with the igntion on engine and just driving all the time. What's up?
P.S. I did a search and was unable to narrow it down.