[Hydro]

Have to get the PC version of ForScan to do the cylinder cut out test -- I do wish they would implement the compensation disable command (not sure why it is not there already)
you do not need the license for this test

Even without disabling compensation, you should be able to hear and notice the differences in fuel delivery, RPM, and IPR percentage

I see you posted a screenie of Torque, so use that adapter to connect to ForScan

 

[Hydro]

So, ...watched the vid
that is an IPR problem causing that
because the ICP sensor is giving a false reading

Also in your Torque pic
the ICPv showing 4.5 ?
with a pressure reading of 874

The PCM is making the psi and % numbers up
at 4.5 volts the pressure would be more like 3600 psi

 

[Hydro]

You do not need the license to use the tool for troubleshooting, only need the license for programming

The voltage on the ICP pid is what the PCM uses to determine a "pressure reading" -- if that makes sense to you
that 4.5 volts is what the PCM is seeing as a signal from the ICP sensor
in this case the "pressure" reading is invalid -- it must be verified by using the voltage from the sensor -- there is a chart

that does not mean the sensor is bad, but it does mean the signal wire has too much voltage on it

Also the true oil pressure may not be represented by the voltage -- if the wires to the sensor are shorting
so, there may be random pressures depending on the severity of the short , and the PCM trying to "figure out" where to place the IPR valve

use the oscilloscope function of ForScan to watch for the voltage spikes on the ICP sensor -- even that is buffered some so you will not see all

Usually we see this when the harness has short a to the vRef (5 volt) wire -- also usually at the ICP connector or at a splice from a previous repair

 

[Hydro]

Start by looking at the icp connector
with it disconnected ForScan should show zero volts on the icp signal
if there is voltage, then you need to look for a short