Another no start. Different this time.

[HennaE30]

So today I drove to school, lunch, and work. No issues.

Come out from work. And it cranks and cranks and cranks, no fire.

So my dad comes to help, figure out we are getting spark, getting fuel to injectors (we know because my dad got doused in the face with gas), but they are not firing.

What sends the signal to the injectors to fire?

[PumpdUpKicks]

The DME grounds the injectors to fire them. Power to the injectors come from the ignition switch as is only present in start and run. either the ground pulse isn't reaching the injectors or they aren't being powered. Try grounding pins 14 and 15 on the DME to fire each bank manually.

[HennaE30]

I also forgot to mention, it did fire up once or twice, then idled for a second and died.

[cWalk3r]

Figure out what this was?

[HennaE30]

With the month of solid rain we had, I didn't really have a time to fool with it. Thought it was a bad ECU, traded it out with a known good one, no fix. With how busy I've been, I just decided to take it to Spec Motorsport to get it checked out. We narrowed it down to being an injector problem though.. Something isn't sending them the signal to pulse. Hence why we thought it was the bad ECU, because the injectors ground back into the ECU as well.

[IceWhite]

Have you checked the C191 plug?
A half assed way to test, would be to ground brown temp signal wire to the chasis with the car in the "on" position and see if the temp guage on the cluster moves to full hot. That wire also runs through the C191 plug.

[HennaE30]

Have you checked the C191 plug?
A half assed way to test, would be to ground brown temp signal wire to the chasis with the car in the "on" position and see if the temp guage on the cluster moves to full hot. That wire also runs through the C191 plug.

Temp gauge is dead. Cluster needs SI batteries