alexiscastro221

Hmmm, yeah makes sense. Even though I upgraded the transistor (and I used heat shrink crimps by the way, please correct me if I shouldn't have) to the z32 transistor, it is also still my main culprit. I'll check out the wires and do the tests you told me to, thanks for the advice.

The fuel pump relay mod is basically when you rewire the fuel pump to an aftermarket relay in order to hardwire the fuel pump to the battery because the new fuel pump requires more current and would possibly damage the ECU if you used standard wires. And yes I checked the ignition coil wire and the positive side gets 12 volts. I also tested the ground side while cranking to see if the voltage would go up and down, and it didn't, meaning that the ignition coil isn't even getting the signal to turn on in the first place. And I cannot check for diagnostic codes because the lights bulbs on the ECU don't turn on at all.

I have had a no spark issue for a while now with my 300zx, it began after I did the fuel pump relay mod because I put in the Walbro 255lph fuel pump, the car did receive spark a few times but after a few weeks of trial and error, the spark completely went away. Yes, fuel is injected when I crank the car, and I have replaced the ignition coil, crank angle sensor, ECU (ECU diagnostic lights don't turn on in the original ECU, and the replacement ECU doesn't have diagnostic lights so I couldn't test it), and I did the PRW-2 mod and nothing fixed it. I am out of ideas, any suggestions would be appreciated.