2 cylidros failure in a Chevrolet

Help gentlemen is a pleasure to greet you in advance I want to thank them for reading my message The matter is like that I have a problem with a 2004 Colorado Chevrolet of 2004 The problem is that two injectors do not work in low reboly but if I accelerate it at 3000 rpm. If the coils of place change, the injectors of place the cranksensor and nothing I always fail and the scanner throws me p0315 that is the cranksensor according to my scan. But I don't know what to do more to do is an aid beating me

Did you try if there is injection pulse in the two connectors that have problems? Quisas does not arrive the exitation signal for the injector, also Czech compretion in those same cylinders does not value the motor and not injection problem. Czech and let us know.

did you check it? The injectors do not work on low or do you think they do not have it? Is the cables you mention of the clinders that fail? Because for what you mention that Sigual sensor sends either cutting sign for spark or pulse for the injector.