earnhardt3

I recently purchase an automotive diagnostic system.Everything checking out on the koer & koeo Data.
I can go in a dcl capture mode and see these parameters:
engine speed 1276 rpm
spark advance 33.5 degree
intake air temp 1.6 volts
engine coolant temp 171.8 degree
egr feedback 0.5 volts
throttle posn 1.1 volts
vechice power 14.3 volts
injector pw 4.3 ms
egr vacuum regl 39.5%
idle air control 4.9%
oxygen sensor 0.03 volts
loop status closed
Does this look nornal and how can i find out.
The truck acts like it's starving for gas at 1300 rpm. Thanks