SleeperGS

Guys so im working on a D15B7, car was working fine til last week, I'm getting fuel and spark, but no injector pulse on 2&4 Cylinders, Tested the injectors for continuity and all are good, Ive gone through the whole wiring harness and checked injector wiring all the way back to the ecu and good connection throughout. I sprayed carb cleaner into the intake and idles and revs good. Also have good fuel pressure

Dist. , Engine harness, Main relay, and Ecu has been tested on another car and all work together

I have gotten the car to idle but i have to keep the throttle down half way but idles right above 400RPM, if i let the throttle plate close it dies.

I'm basically at wits end just throwing the towel and ripping out the complete dash wiring harness and throwing in a known good working one but i thought maybe someone on here would know anything else i could try.

ezone

Backprobing the injector connectors# 2 and 4:
Is there 12v present in each connector on the yel/blk wires?

On the other wire in each connector: Is the ground pulse from the ECM present or missing when using a test light?

Knowing which side is present or missing leads the way to the next step.

Is the ECM actually pulsing ground for the 2 missing injectors but the signal isn't reaching the injectors? Test to find the answer.

Harness junction connector on the fender is the only other connection between controller and components for the ground (pulsed) side.

Terminal tension/pin drag checks in each injector connector (and all the rest of the terminals along the way)? The female terminals can wear out and lose grip, causing loss of connection.