Oh didn't know that. My shop instructor build a 4.7 Dakota than ran pretty darn hard and he always was saying how he wish he could go carburetored with his. Maybe he ment he could but it was pricey?

 

Ok took me 3hrs but i got the barrel pins replaced and back into a PCM plug housings my friends Dad actually had from a Ram 1500 project. Everything went together fairly easy just slow going. Power is back to everything again and surprisingly no codes are being thrown. It's still cranks over without starting so just out of desperation I sprayed some gas from a spray bottle down the throttle body and it started right up! I tested the fuel pressure at the rail passenger side and it was just shy a 50 lb so I think that's acceptable? Tried starting again no fire, sprayed gas down the throttle body again fired right up so I kept spraying while running the accelerator with my hand and the RPMs climbed perfectly and well over 3500 just by the sound of the motor from the outside with no hesitation. So what this tells me I'm guessing is that there's no power to the injectors otherwise it would at least be trying to start right? I rechecked all the fuses and relays again and everything is fine, so now I have to figure out why there is no power or at least no fuel coming through the injectors.

 

You have pressure, so, you are either lacking power to the injectors, or the PCM isn't pulsing them. Power is easy to verify, unplug an injector, put your test leads across the terminals, and have someone turn the ignition on. (not start, thankyouverymuch) Should see power there for about 3 seconds.

 

Just test probed #1 and #4 injector strong light for just over a second.

 

Same test, but, try cranking the engine. Light should pulse. (put your tester across the terminals. )

 

Ok just tried the pulse check, this time it took 5 tries to get any power to the injectors for the initial light to stay on for a second then yes, the injectors pulsated while cranking but still no fuel to start. Sprayed gas in the throttle body and she fired up. How can the injectors be getting fuel/power but not spraying fuel?

 

You have pressure, and the PCM is firing the injectors, that does not necessarily imply the injectors are actually passing fuel.

Pull the fuel rail, with the injectors. Point them into some appropriate containers, disable the coil....... (just unplug it.) crank the engine a bit. ARE the injectors actually spraying fuel? Hows the pattern? Balance between cylinders? Note: These should be pencil beam injectors, if they are stock. so, they shoot a stream of fuel.

I wonder if the effort required to get power to the injectors is the problem though...... Since you actually get spark, even though you don't seem to get fuel, I would suspect a wiring issue AFTER the ASD relay. (it feeds the coil, and injectors.)

 

Yeah i think i tested that particular wire brown/white i think? It had power.

 

The weather is getting bad here so probably won't get the rails pulled today but i did check the error codes one last time and it threw P1491 and threw all 8 injector codes lol.

 

Leftovers from the connector swap?

Wonder why it's whining about the injector circuits.... especially, ALL of them. That would suggest a power problem there.....