Knock sensor

[Preyes59]

I just change knock sensors and my avalanche still stalling when I starring., I have to press gas pedal so she starts., I changa manifold intake, fuel pump, injectors, map sensor, crankshaft sensor evap sensor, etc

 

[Preyes59]

I have my truck diagnosed 3 times and I fixed all the issues she still having problems starting, can someone help me out.

 

[EXT4ME]

Pumping the fuel pedal doesn't do the same on a fuel injected engine as it is did back in the days of carburetors.

No fuel is pumped into the engine like on a carbureted engine.

I read you changed the fuel pump, but what are the fuel pressures?

Key on/engine off.

Key on/engine on.

Key off/engine off.

 

[ygmn]

what codes did you get?
Did you just change the part or go thru the diagnoses chart?