Exhaust Brake, Turbo, Or Actuator?

[Jessekman]

Good afternoon.

On my way to work this morning, I was driving with the exhaust brake on; I was doing about 75mph.

While i approached my exit, I let off the pedal, and the brake started to slow me down.

It sounded a little different than usual and it felt like it was bogging down.

I gave it more fuel, and i noticed it was blowing smoke when I gave it more fuel.

I pushed the button for the EB, turning it off.

The smoke went away, and it ran fine.

I took a trip for lunch and checked it out again.

Around 40 mph, the EB works fine, slows you down to about 35, and then disengages.

No Smoke.

I plugged in the tester, and no codes came up.

I've been reading on here about the actuator having issues, I'll check connections when I get home tonight.

Has anyone had this problem?

It has a 5" pipe, EFI Live.

Thanks for any feedback

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[Corkey]

The best bet, plug in a scan tool and check the actual vs. desired when working the brake.

They should be fairly symmetrical with each other.

If the number is deviated by a noticeable number, it could be the first sign of an actuator going out.

What I would do, or what people have done, is put a good load on it with the brake on and burn off the accumulated carbon.

Hopefully, this will clear the symptom up.

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[AK Bob]

If you suspect the turbo vanes are sticking, keep using the exhaust brake and try running some fuel system cleaner.

https://www.archoil.com/products/ar6...ystem-cleaners

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[Jessekman]

Thank you.

I forgot to mention I have around 240,000 miles on the truck.

I'm sure it has accumulated a lot of carbon.

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