Engine Power Cutting Out/Bucking?

**leakproofcow88** · 06-25-2022

Stock ‘11 G56.

Under acceleration, the turbo spools up and builds pressure but then cuts out intermittently.

Warm or cold engine.

Open or closed loop.

D01177F8-8C71-4868-BED5-AEDFB9D4FE57.jpg

Attached is a photo of the Banks data monster gauge left to right and top to bottom:
EGT Atmospheric Pressure
Turbo RPM Turbo Vane Percentage
MAP MAF
Exhaust Back Pressure Boost Pressure

I am trying to upload videos to YouTube for viewing.

Have codes, and I will edit them when I get off work.

The first video is a clip from when I was driving.

I can’t hear the noise it makes so much, but the numbers are what I was trying to catch.

https://youtube.com/shorts/xQOwSdGNwf8?feature=share

The second video is for sound.

Hopefully, it conveys well.

https://youtube.com/shorts/ylAhUeToYiY?feature=share

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**leakproofcow88** · 06-26-2022

Codes.

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**Corkey** · 06-27-2022

Good lordy.

It was cutting in and out.

Have you seen what rail pres, actual v desired for the turbo and fuel to the CP3?

With all the codes, i believe it's a plug that has come loose, dirty contacts, and or pins; maybe reload the ugh "batteries."

To see if that will work?

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**AK Bob** · 06-27-2022

Attached is troubleshooting information on the codes I have available.

The P2BDC code indicates engine power derate due to the other codes.

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**leakproofcow88** · 06-29-2022

Thank you very much for those pdfs.

I’ll check the speed sensor resistance and I did actually clean that tube and the port the sensor screws into, so I guess I need to install a new back pressure sensor.

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**leakproofcow88** · 06-29-2022

I have not done a command vs. actual, but I’ll change those to show up on my gauge side-by-side next time I drive it.

The weather’s been nice, so I’ve been saving diesel by riding the motorcycle.

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