Does anyone know how to test a fuel pump on a 1984 2.5 ?

[jelly2m81]

Proper way to test that is with a Noid light, plug it into the injector harness and crank the motor see if it flashes. If it does, the injector is at fault. If it doesn't you may have a problem with the wiring or ECM.

In absence of a noid light you can test the ECM / wiring with a test light or an old analog multimeter ( style with a needle ).
The pink wire at the connector is hot at all times with the ignition on, the blue wire should pulse when cranking with the test light / meter connected to +12v.

Have you checked the Injector fuse? there is a fuse for that.

[84duke]

I tested the injector lead solinoid,with a noid tester and cranked it over, and theres no reference signal.Where is the Injector fuse? is it in the fuse box? what is it labeled? Does anyone have a clear wiring diagram that would show how the power goes to the injector leads? is there anyway to test the ecm? also where does the ecm power harness come from on the indy fiero with just the battery and the ground wire on the battery side wall and the main harness on the firewall layout early 84 version. My battery and ground looks like the pic. the ecm pwr junction box is on the firewall behind the seats. thanks

[KurtAKX]

Just bring your car over. I'm confident I could fix it faster than I could explain it.

[befarrer]

I do believe the ECM grounds the wire for the injector, which means your injector should have 12V at one of the wires all the time when the ignition is on, and the other wire goes to the ECM. If you are not getting 12V at one of the wires with the igniton on, I would check fuses, I cant remember if it is my 84 or 86 Fiero (both originally 2.5L), but one of them had an INJ fuse. Could also be a fusable link, 84's had alot of wires going to the starter solenoid, and they all had fuseable links at the starter end, maybe one of them is fused?

[The Dark Side of Will]

As mentioned before, the pink wire at the injector plug is +12 all the time. You can check the injector fuse with your test light by referencing the battery negative post instead of the other wire to the injector connector.

[84duke]

Will where is the injector fuse? is it the crank fuse? 3amp? or is the ecm ignition fuse 10amp? thanks

[The Dark Side of Will]

In the later years there are fuses in the box labeled INJ 1 and INJ 2. I think it's the same on the '84 but I'm not 100% sure.

[84duke]

inj 1 and inj 2 are for the v6 unless one of these is used for the 4 cylinder does anyone know? thanks

[befarrer]

Most, if not all of the 84 fusebox is different, it is arranged differently, and there are fuses for different circuits.

[The Dark Side of Will]

They were used for the 4 cylinder first. The port injectors draw less current than the TB injectors. That's why you can run three/four port injectors on the same fuse that feeds one TB injector.

[84duke]

Where would u start to figure out how to get power to the injector solinoid? I checked all the fuses with a test light and they are getting power when key is turned to run. Whats next? any thoughts. Does anyone live in cincinnati ohio that might be able to stop over with a 84 and help i would be willing to buy the beer? thanks