so i had a hard start issue about a month ago. and since then have replaced cas, coil twice. done the hei igniter conversion , changed ignition switch and still no spark. coil gets 12 v but no spark. have fuel and afm is working. 0.04 volts from yellow igniter wire . dont know if thats correct v range or not. new plugs wires cap and rotor. ecu has green light on except when turning over ignition it turns off until i turn key off and then back on ,then it relights until trying to start again. i am at my wits end with this car. i was excited to have my very own z and this happens. any help will be much apreciated.

 

also yellow wire does not pulse

 

Is your Fuel Pump works good?!?!

 

If the ecu is getting power and there's no power (pulse) on the yellow coil wire, you have a dead ecu. I have a spare dead turbo ecu that does the exact same thing. Somebody on the 280ZX Driver FB group mentioned that it's the "zero-ohm link / resistor" in the ecu, and they fixed this problem by replacing that resistor. I've never researched it, but that's a start for you.

And, if you need to replace the ecu, now is a perfect time to do the Z31T ecu / maf upgrade (I have a helpful zip file of info, and I have most of the needed parts).

 

thank you
i'll research that. does anyone have an idea of where on the board i can find it ?

 

oh and yes it does have fuel. the relay cuts on and off so often that i put it on a switch.

 

NismoPick . Are your items for sale or your own collection for a upgrade ?