Berndt Naha
Microbiologist | Naperville | United States
I am working as Microbiologist.
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From my recent experience helping a relative: make sure your income proof is latest, preferably for the last financial year. Any mismatch can delay approval. You can also track your application status online using your application ID—super convenient.
On the 6.0L Powerstroke, the VGT actuator position normally ranges between 40% and 60% at idle, and it moves toward 100% under full load. Basically, the actuator adjusts the turbo vanes to control boost pressure and improve efficiency.
If the reading is too low, it can mean the turbo isn’t spooling correctly—maybe the actuator is stuck, there’s exhaust restriction, or the turbo vanes are gummed up.
If the reading is too high, the vanes are staying too closed, which can cause overboost, smoke, or even EGT (exhaust gas temperature) spikes.
A lot of mechanics use an OBD2 scanner to watch VGT duty cycle while running the engine. If you see abnormal numbers under normal conditions, it’s a clue to check the actuator linkage, vacuum (on some units), or the turbo itself.