Cut out under load

Rish thanks for your response, I hate this connectors lol, I might have to get some just because i can’t bring my soldering rig to the parking lot.


ALSO it’s just running crazy lean, I did fuel pump, fuel filter, awhile ago and I think it’s either injectors or the wiring to them, as I blocked off the fuel return line and it made no difference, in the other forums people say there maf being unplugged doesn’t make as big of problem as I am having. I’m gonna get a fuel pressure sensor setup and test pre and post rail. But if that’s good I am once again at a toltal loss

 

Red taco I still haven’t bought it, it’s hard for me to justify I think it’s something else now, idk I’m losing my mind

 

Good luck. Definitely gotta rule out fuel delivery, but the fact that you briefly had it running right with the MAF halfway plugged in seems like fuel wasn't a problem then, so it shouldn't be now. I wonder if the MAF reading is jacked up its then cutting fuel

 

It only runs fixed for about 2 seconds on Maf plug in after being unplugged while running so I definitely think the computer is just tweaking out, maybe I need a new ECU I don’t even know.

 

I tested the fuel pressure out of the fuel pressure regulator and it is a consistent 60psi which is not the 31-44 or anywhere in that range. So I’m gonna get a adjustable fuel pressure regulator and see what that does, I thought it was lean because when it’s dieing out from a bunch of throttle and I spray starting fluid it revs up, but the pressure is to high so maybe it’s just forcing the injectors closed.

 

Anyway put that regulator in, no difference still.

https://youtu.be/1oPv2iN3WIo?si=1OMBNYwIA7-mvIJw

here is the cut out in video format so everyone can see.

As a reminder:
when it’s running at low rpm after plugging the maf in it will run perfect
And I’m sure it’s running lean because when it’s dieing out when I’m flooring it and I spray starting fluid in it runs up great.


as you can see the maf is not on the truck at all, and it acts the same when it is fully locked in, so I don’t think it’s a vacuum leak