2011 RAM 6.7L Cummins Not Building Boost!

[AK Bob]

Sorry for the dumb question, but what would I use to get the actual/ desired?

I'd like to try that

The MM3 will have these PIDs, Autoenginuity software, or a higher-end Scan tool.

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[Corkey]

Either a monitor or a scan tool.

Unplugging the FCA will max your fuel rail out; therefore, monitoring the actual vs. desired should match almost identically.

If the desire is off, I suggest buying a new FCA and starting there.

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[11megacab]

How would I do that on the MM3?

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[AK Bob]

How would I do that on the MM3?

Please scroll through the Pressure PIDs to find them and display them on a gauge screen.

From there, you can observe or record.

See RP-D and RP in the upper right of the screen.

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[Corkey]

Go to config, and I think it will be under.

I haven't tried to see if the pressure tab has an actual vs. desired, but i would look there first.

If you find it, click it and put it somewhere on the screen, and change it.

Worst case scenario would be to bring the truck back to your guy and have them plug in a scan tool.

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[11megacab]

I found the gauge and watched it on my way to work and noticed at some points it’s roughly 1000 off, then seems to take a second and catches back up to close to the desired number.

So it’s looking like the FCA from what you guys are saying.

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[AK Bob]

I found the gauge and watched it on my way to work and noticed it’s roughly 1000 off at some points, then seems to take a second and catches back up to close to the desired number.

So it’s looking like the FCA from what you guys are saying.

It sounds like the actuator may be sticking.

The OEM Bosch P/N 0928400642 is available on Amazon for $129.

I believe that’s a reasonable price.

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[11megacab]

Thank you so much for all your help!

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