1rad280

Check and see If you have voltage on both sides of the fuse linkes with a test light. But that dont sound like the problem. See If you get voltage at the small wire that connects to the starter while someone else turns the key. You might want to check the bottom fuse on the right hand side of the fuse box also just a few ideas.

I'm haveing the same prob, but my car is fuelinjected much more stuff but I would like to know how everything works out.Maybe someone can put me in the right direction.

I replaced the fuel injection relay and the engine turned over with the key.I had power to everything even spark.But it didn't last long after cranking for a few sec,everything quit now I'm back to square one,but closer to square two than befor.Any one have ideas what is causeing the problem?

Sorry, about that I was posting at work most of the time,If we a on the computer not doing work, we get fired on the spot. Plus didn't you see Im from Ky lol.

I failed to tell you no power to it either.The power runs from the battery and goes into fire wall, into the injection relay/fuelpump relay back out to air flow meter. If I'm not mistaken the guy I bought it off of seems to think he crossed the wires from pump with the battery on and I think he may have fries that relay check this out. http://www.atlanticz.ca/zclub/techtips/efisystem/280zfuelinjectionbook.pdf

on my 1975 280z. I think I have narrowed it down to the fuel injection /fuelpump relay above ecu after reading the z fuel injection (bible) and looking over my huge wire diagram.I have power across the fire wall into the fuelinjection relay but nothing after that. so Im going to barrow parts off of my 76 and maybe that might fix my problem because this finding wires thing stinks.

power to lights ,horn ect, no power to ecu.

ok if i put my test light on neg side of battery and touch the two small blue and red wires on ign swithmy light comes on ,also if i cross the bottom fuse on the right side with the one above it i get power to the starter so im guessing bad ign. swith so far.

I will have to try that what does the 1 1A fuse go to at the bottom of the fuse box? and ill tell you how that works out because it could be any thing this car set for a long time.

Yes, I have power to the lights and horn relay because I can hear the horn relay click and the lights work. I dont have power to ign but I can arc the starter and it will crank but nothing else this week im going to see if it is geing power to the ecu, I think it has a bad ground thats not completed the ecu loop. The guy i got it from seems to think he fryed the wires going to the fuel pump so i have to find the fuel pump relay and the ign. relay and check voltage there. so far a test light with a long leed from battery works the best to check for ground.

I have a 1975 280z 4 speed when I hook the batt. to it the lights work but I have no power to the ign or fuel pump I can cross the starter and it cranks but thats it what should I start with relays?,switch?,