New pump new iac new crank sensor still same problem. Fires and dies immediately! Pouring fuel down the throat makes it run. Help please?????

 

Will it stay running if you keep your foot on the gas?

 

Any codes?

 

no, seems like when it fires it runs out of fuel. I can pour gas down its throat and it runs until i stop. The fuel pressure never drops below 40psi. But in the rum position its pressure is 50psi.

 

no, seems like when it fires it runs out of fuel. I can pour gas down its throat and it runs until i stop. The fuel pressure never drops below 40psi. But in the rum position its pressure is 50psi.

 

Does the fuel pump continue to run once it fires?

 

Do you still have power at the coil when it quits? (power will go away a few seconds after the engine stops running, so, keep that in mind.)

Might try swapping some relays around, start with the ASD relay, if that doesn't help, try the Fuel pump relay.

 

Pump replaced no change from old to new.

 

Help with asd function .

 

Auto Shutdown Relay. It gets energized for about 3 seconds at initial key on, and then, only if the PCM sees the engine turning. Since you are getting spark reliably, the PCM seems to be seeing that the engine is turning..... but, if the relay is weak/bad, it may not be staying engaged.

Could also be a bad ignition switch, not sending power to the control side of the relay with the key in the run position.

If you don't have one yet, grab the service manual for your truck from here.