No codes, low boost, no exhaust break

[Gcstubbs01]

Low boost but no diesel break. Mechanic is saying needs a new turbo. I have no codes. I also have alpha OBD and check codes there but still no codes. Anything else to check before I change turbo?

 

[lpennock]

Probably just the VGT actuator. How old is your truck and how many miles? City Diesel makes a better than stock actuator that doesn't require calibration like the stock actuator does.

 

[Gcstubbs01]

Probably just the VGT actuator. How old is your truck and how many miles? City Diesel makes a better than stock actuator that doesn't require calibration like the stock actuator does.

2018 with 300k. Wouldn’t the actuator be throwing codes?

 

[lpennock]

Sometimes they throw code but not always. The normal indication of the failed actuator is the lack of an exhaust brake. If you were at 100K I would say replace the actuator, at 300k it is a harder choice since it is possible worn vains caused the actuator to fail.

 

[Ozymandias]

You can easily calibrate new Actuator with a Alfa.
300K is fairly good by the way.