How do I know if my turbo vane sensor is bad?

Premium Member. If your truck at idle is having a normal exhaust note, then a hiss, followed by normal exhaust note then a hiss and it keeps doing that, plus excessive smoke, loss of power, then your turbo vane sensor needs replacing.

What does the turbo vane position sensor do?

The Turbo Vane Position Sensor is what allows your diesels ECU/ECM unit to properly control the variable geometry turbo vanes on your turbo.

Where is the turbo boost sensor on a Duramax?

This is your Boost sensor. The manifold pressure sensor is located in the intake manifold and measures pressure delivered by the turbocharger. It is a three wire sensor that provides an analog voltage signal. It is primarily used for diagnostic purposes in the first LB7 Duramax engine.

How does a vane position sensor work?

The vane position sensor relays a signal to the ECM which then sends a signal to the VGT actuator telling it what position the vanes should be in. When this sensor fails, the ECM provides incorrect signals to the solenoid, which creates turbo issues and therefore performance issues.

How do you clean a vane sensor on a Duramax?

Percieved vane sticking might actually be caused from a bad vane position sensor. The easiest way to clean out the turbo vanes is to floor the go pedal and blow it out….work it and get it hot! I do this at least once a day to make sure it stays clean.

How do you clean turbo vanes without removing them?

How To Clean a Turbo Without Removing It

1. Park your car outside.
2. Get a turbo cleaner and gloves.
3. Warm up your engine.
4. Disconnect the air inlet pipe.
5. Spray the whole turbo cleaner.
6. Leave the engine idling for 5 minutes.
7. Rev up the engine.
8. Reconnect the air inlet pipe.

Can you clean a vane position sensor?

Can I spray WD40 in my turbo?

The turbo is just raw iron. It will rust, period. Don’t spray any WD40 or anything else on it. That stuff is very flammable.