I have a really odd electrical issue with my #1 injector. it will be out(no signal at ecu/ecm)most of the time but will come back evey so often when it's on it pulses like it should and is getting a steady signal at the ECU/ECM. but when it's out it will still sometimes a get signal at the ecu but nothing at the injector end. it's not the injector it's self i've swapped them all around several times still remains at #1.

have done pulse test(when it works)pulses as it should, have used test light to check signal at the ECU all other injectors have steady signal even #1 some times. Car is a OBD1 GS-R.

you can see when i plug it(injector clip) back in it comes back on randomly

 

Its possible the ground is bad. When you put the lite to it it acts like its shorted before it gets to the injector. If you do it to the other wire in the plug do you get the same symptoms or does it get better.

 

don't forget the car is old so replace the pigtail on all injectors or wire harness if you can.

 

if i touch the one wire(brown in pic) regradless of the injector it goes shitty touch the other wire nothing happens. here is what my pigtails look like was thinking they looked worn out all the others have the cover to the bottom 3 has a bit of metal showing. The ting im confused on is if you play around with the wires enough it will work it's self out so to say.

@mr beeks will an obd1 pig tail(s) from a civic or DSM work AFAIK we can use dsm(obd1) injectors on our cars not that im intrested in the injectors more so the pigtail

 

u solved your problem.

 

Grounding issue ? but it comes back....that's only a temporary fix should i replace the pig tails as the issue seems to be on the "engine" side of the harness rather than the ecu that being said when i tested the wires at the ecu it would do the samething" kill the injector"

 

yes replace pigtails and check engine harness the car is 20yrsold