My truck started running really shitty today, it would bog down and have no power and then it would come out of it and seem fine for a bit adn then it would bog down again.

When I came back out to start it, it was a no go. it wouldnt' fire. I sprayed some ether and that makes it fire for a couple seconds and actually i managed to keep it sputtering for almost 30 seconds 1 time. but it wont' actually start and run strong.

I shorted the diagnostic port and got these codes.

13 Oxygen sensor or circuit
32 Open MAP sensor circuit
43 Electronic Spark Control unit (ESC)
43 Knock sensor signal
44 Oxygen sensor or circuit - lean exhaust detected

the only one that seems like it would prevent it from starting is the electronic spark control unit. but it has spark cuz it fires off of ether.

Maybe the whole computer took a shit on me?

With those codes I'd be checking fuel pressure. Sounds like a pump to me. 9-13 psi. Good luck. DB

Yep, there's a good chance it's the FP.
And I've noticed it's never when your running low on fuel,
it's always when you just filled up the tank that the FP quits.
Gotta love wrestling with a full tank of gas!