5.3 wont turn over Help!

[zeeman]

Did you have vats deleted in your tune? You had the pcm tuned right?

[sweet_87_iroc]

The pcm has been tuned. I built it.

[ruckusz28]

Still Sounds Like VATS / PASSLOCK to me

[sweet_87_iroc]

My buddy double check the tune and everything is right. My injectors aren't firing for some reason

[sweet_87_iroc]

Ok still not starting. Any ideas?

[hoogiesngrinderz]

Getting power to the injectors? One wire should have 12v constant and the other is the trigger wire from the ECM (injectors are fired by ECM grounding via a injector driver)

Check INJ1 and INJ2 fuses if your harness was properly converted.

[1BADAIR]

run a constand power to pcm. more than once ive had ignition switches that dont keep constant power between start/run

[sweet_87_iroc]

I have 12v to every injector. I also have a constant 12v to the Pcm. I did continuity checks of the harness connectors to the pcm. Everything check out good. I have spark which I check with a spark light. I have fuel pressure. Only thing I can think is I missed wire something up on the pcm when i built the harness or missed something on the iron harness. I have to double check to make sure the 87 harness doesn't have vats. From what I am told is GM didn't start vats until 88. I am at a lose right now.

[1BADAIR]

Test light doesn't blink on pcm power while key from start to run? What pcm/harness

[sweet_87_iroc]

I can double check with a test light. It's a 411 and a harness out of a 2000 Silverado.

[ruckusz28]

Never use a test light on modern vehicles. A multi metet is a much bettet choice. The light draws enough amperage to deploy restraints or fry a pcm. A guy at the old shop had to eat a huge damage claim when he toasted the pcm of a charger from using a light.

[sweet_87_iroc]

I have a iac low voltage code. I don't think this will affect if it starts or not. Anyone have any input on that?

[sweet_87_iroc]

Got it. She is alive. I had my feed and return Lines swapped on my regulator.

[1BADAIR]

Never use a test light on modern vehicles. A multi metet is a much bettet choice. The light draws enough amperage to deploy restraints or fry a pcm. A guy at the old shop had to eat a huge damage claim when he toasted the pcm of a charger from using a light.

he was checking 12v inputs....

[ruckusz28]

Just trying to save somebody a big electrical nightmare is all.