2012 maxxforce 13 boost surging

2013Maxx · Apr 20, 2021

eland310 said: ↑

Few years late but for others out there, surging after that kind of work is almost always caused by the throttle valve. Pull the butterfly out and send it.
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Pull the butterfly out? Is that different from the throttle valve?

Bdirn49 · Jan 28, 2024

RickieBrent said: ↑

This engine is dpf/egr free now, I have a scan gauge to readout alternative gauges. The truck is surging really bad under any circumstance, loaded/ unloaded. The boost psi is jumping from high 30s, to high 20s. It did this before a half day, but then never again until now and is constant. Is there a common problem I could go straight to and check or just a turbo failure coming? And the surging doesn't seem to start until 9/10 gears, and then it seems like it's the entire rpm range. Any experience with a similar problem or a where to start would be very helpful. I'm new to the diesel world.
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I I know this is an old post. But were you able to ever figure it out. My truck has the exact same symptoms to a t.

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