Exhaust brake not working

[rob10858]

This is 07.5 manual transmission I'm guessing the sliding vane has either broken or stuck solutions please

 

[MichaelOverfield]

Rob, I think you are on the right track. There have been reports of that variable vane becoming stuck, which would prevent the exhaust brake from working.

 

[seafish]

EB failure to operate can be caused by exhaust vanes sticking due to soot buildup is one cause, but electronic actuators failures are another cause.

The former can be fixed by a thorough cleaning. Partial cleaning can be done on the truck using am existing or a drilled port into the exhaust side housing is one way to do it, but IMO the most effective way to clean is turbo removal and partial disassembly, which is a
somewhat difficult and definitely detailed and dedicated job!!! If your turbo has a cleaning port already installed, then perhaps use that route first.

If EB failure is due to a bad actuator, then actuator or complete turbo replacement is the only option.