It sounds like your VGT actuator is bad.

 

I thought that also took one off another truck that I know is good still the same issue

 

Swap turbos I guess if you have one but I think it might be injectors, you can't build boost without them.

Might even try to run it with turbo boost pipe unhooked

 

So I tried that also I plugged the vgt in and disconnected the boost tube and it’s still doing it im going to try tomorrow and swap turbos

 

If you disconnected the boost tube and it's doing it you might have a plugged exhaust, broken turbine or vanes, or it's something with the engine.

I might pull the turbo and put a bottle on the turbo feed and run it for a second to eliminate the turbo or swapping might be better.

 

Try swapping out the pcm with a known good one.

 

I’m going to try that started to look more at the wiring side looks like that last owner started cutting and splicing stuff

 

Do you have the ability to get forscan? If so, reflash the pcm with the as built files. Also, if you don't have access to forscan, try swapping out the pcm with a known good one.

 

Swapped with a good pcm still the same issue I’m kind of stumped here lol

 

You have a snap on scanner. How many pids can you veiw? What are you seeing for EBP, VGT duty cycle, MAP, AIT. Time.to start looking at other sensors to see what's going on.

You can control the vgt solenoid with you scanner. So I would assume that means the vgt solenoid is good,as well as the wiring. It's got to be another sensor causing the problem.

You could even perform a vgt solenoid relearn procedure. Just thinking out loud at this point.

 

You have a snap on scanner. How many pids can you veiw? What are you seeing for EBP, VGT duty cycle, MAP, AIT. Time.to start looking at other sensors to see what's going on.

You can control the vgt solenoid with you scanner. So I would assume that means the vgt solenoid is good,as well as the wiring. It's got to be another sensor causing the problem.

You could even perform a vgt solenoid relearn procedure. Just thinking out loud at this point.

I’m going to check tomorrow to see what the sensors say how would I go about doing the vgt relearn

 

Just start with the basics. Compression, injectors, boost, map baro boost psi......etc

My guess is related to injectors as you cAnt build boost without them but it could be many things

 

Clear the codes and see what happens.

 

They keep coming back

 

I bought this truck the other week the issue it was having is when the vgt is unplugged it’s drives fine just no boost and when I have it plugged in the truck just bogs, smokes white and wants to die. the guy said it had a turbo issue. Vanes were sticking so I cleaned the vanes and got a new unsion ring because it was cracked still the same issue. Also the fuel pump was going out had to tap it with a hammer to get it working so I replaced that too and I’m still having the same issue.








Speed Test

It sounds like your VGT actuator is bad.