xfordman

i had the same problem when i got my 83 280zx..it had sat 4 a year and i had to replace my module as well as pull the pump and replace the filter before it would even run. the module in my car is a E12-92 and needs the extra wire for the profile ignition pick-up for the computer or it wont allow the injectors to fire..it sounded like it would misfire then turn over and over then fire again without starting and just keep turning over..your problem sounds similar.i never had to replace my module in my car, i just needed to clean the pump and screen and replace the fuel filter. later i gave it a complete tune up and it runs great today..i would start with checking with nissan and see wut your vehicle is supposed to have.and order a shop manual for 1983 280zx so u get the wiring schematics which i found to be quite usefull.if u got ur car from a private party that u never met before they could have done some creative wiring that u dont know about..that was my expierence with my car and the book cured alot of guess work when it came to "does this belong here or there"???good luck