Turbo actuator hacking.
02-14-2022, (Subject: Turbo actuator hacking. ) 
Post: #1
Turbo actuator hacking.
Hello everyone. I have a issue with my engine harness. A few days ago I washed my engine, the truck wash sprayed it with acid and now it has messed up some wiring I can't find.

The issue is that the turbo actuator is opening and closing the vgt constantly. Won't let me drive. A barely get 8 psi boost.

I disconnected the harness to the turbo actuator and I am getting 17 psi. This was okay for the flats but tomorrow I have to drive through the Appalachians. I need more boost.

Heres my problem. There are four wires going to the turbo actuator, red, yellow, green and green with a white stripe.

I want to momentarily feed some current into the actuator so the vgt vanes get opened. Run it like an old school turbo.

Here's the thing? What kind of motor is in the actuator? Dc? Ac? Brushless? Or is it as solenoid? Is their spring in there?

Into which wires should I feed the current?
I am thinking if I momentarily energize the right wires the actuator will open up the turbo.

I know it can be done and the truck can be driven this way. About five years ago I had a vgt part of my turbo fail in the open position. I was able to drive it home over 4000 miles. Lol

I just needed to watch my egt temps and boost.

So if any of you guys know which wires to open the turbo please let me know. I desperately need to deliver this load. Afterwards I can go to a shop.

My other option is take the actuator out and manually adjust the turbo. But it's 21 outside and snowing and I am at a rest area.

The engine is 2008 cummins isx cm871.

Thank you.
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Turbo actuator hacking. - Hush - 02-14-2022



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