10 Potential Symptoms Of Bad Turbo Vane Sensor [ Explained & Fixed]

Turbo vanes sensors are important for the overall functioning of the engine. If this component is not working properly, it can lead to performance issues and even damage the engine. You should be aware of some potential bad turbo vanes sensor symptoms. 

This blog post will explain in detail what a turbo vane sensor is, what problems it can cause if it’s not working correctly, and how to fix them. So, if you’re experiencing any of these symptoms, read on!

What Is A Turbo Vane Sensor?

A turbo vane sensor is a device that helps to regulate the airflow in a turbocharged engine. The sensor is mounted on the compressor housing of the turbocharger, and it consists of a vane that is connected to a spring-loaded arm. The arm is connected to an electrical switch, which controls the airflow.

The purpose of the turbo vane sensor is to measure the pressure difference between the inlet and outlet of the turbocharger. When the engine runs at low speeds, the pressure difference is small, so the vane is in the closed position.

What Is A Turbo Vane Sensor

How Does A Turbo Vane Sensor Work?

A turbo vane sensor is a vital component of a turbocharged engine, providing feedback to the engine control unit (ECU) about the position of the turbine vane.

The ECU uses this information to adjust the amount of fuel being delivered to the engine, ensuring optimal performance.

The sensor is a small electromagnetic device mounted on the turbine housing. As the vane moves, it interacts with the sensor, generating a signal sent to the ECU.

Symptoms Of Bad Or Faulty Turbo Vane Sensor

Have the car looked out as soon as possible if you experience these signs? Turbo vane sensors are critical to the proper operation of the engine. Thus a faulty one has to be rectified as quickly as feasible.

1. Engine Misfire

A faulty turbo vane sensor might blame your engine’s misfire. If this sensor isn’t functioning correctly, the engine won’t be able to accurately gauge how much air is being sucked into the combustion chamber.

2. Check Engine Light

When the check engine light comes on, it might mean that the turbo vane sensor is malfunctioning. If this occurs, it’s crucial to get the car checked out as quickly as possible.

Check Engine Light

3. Poor Fuel Economy

Low gas mileage is another sign of a faulty turbo vane sensor. This is because the sensor controls the amount of air and fuel entering the engine. If the engine isn’t functioning correctly, it will use more gas than it should.

4. Engine Hesitation

If your engine hesitates or stalling, it might be due to a defective turbo vane sensor. If this sensor isn’t functioning correctly, the engine won’t be able to accurately gauge how much air is being sucked into the combustion chamber.

5. Rough Idle

A faulty turbo vane sensor may blame your car’s jerky idle. If this sensor isn’t functioning correctly, the engine won’t be able to accurately gauge how much air is being sucked into the combustion chamber.

6. Surging Engine

Having a faulty turbo vane sensor might be the cause of your engine surging or stalling. If this sensor isn’t functioning correctly, the engine won’t be able to accurately gauge how much air is being sucked into the combustion chamber.

Surging Engine

7. Engine Stalls

If your engine repeatedly dies, you may need to replace the turbo vane sensor. If this sensor isn’t functioning correctly, the engine won’t be able to accurately gauge how much air is being sucked into the combustion chamber.

8. Poor Acceleration

A faulty turbo vane sensor might blame your car’s lackluster acceleration. If this sensor isn’t functioning correctly, the engine won’t be able to accurately gauge how much air is being sucked into the combustion chamber.

9. Engine Misfires

A faulty turbo vane sensor might blame your engine’s misfire. If this sensor isn’t functioning correctly, the engine won’t be able to accurately gauge how much air is being sucked into the combustion chamber.

10. Reduced Power

A faulty turbo vane sensor might be to blame if your car performs poorly. If this sensor isn’t functioning correctly, the engine won’t be able to accurately gauge how much air is being sucked into the combustion chamber.

Read Also: What Is The Dodge Ram Engine Replacement Cost?

5 Ways To Fix A Bad Turbo Vane Sensor?

A turbo vane sensor may be problematic, but there are several things you can check if you believe this is the case. If your turbo vane sensor is acting up, try these five things:

1. Check For Loose Connections

First, make sure that the turbo vane sensor is properly connected. Check to see that they are properly fastened. A weak or non-existent signal may result from a connection that isn’t quite secure.

2. Check For Corrosion

To continue, examine the turbo vane sensor and its connections for signs of corrosion. Sensor performance depends on detecting corrosion and when it has been removed.

3. Check The Wiring Harness

You should inspect the wire harness to see if there is no corrosion on the sensor or its connections. Verify there are no frayed or broken cables and that all wires are in excellent working order.

4. Replace The Turbo Vane Sensor

If you’ve already done everything on that list and the sensor is still malfunctioning, it’s time to get a new one. You can get turbo vane sensors at any discount auto parts shop for a reasonable price.

5. Take It To A Mechanic

Take it to a professional if you aren’t confident diagnosing the problem or making the necessary repairs to the turbo vane sensor. They will readily be able to identify the issue and implement a solution.

Types Of Turbo Vane Sensor

There are two main types of turbo vane sensors: those that use a variable reluctance sensor and those that use a hall effect sensor.

  • Variable reluctance sensors are the more common type and rely on the change in magnetic flux as the vane moves to generate a signal.
  • On the other hand, Hall effect sensors use the interaction between a magnet and an electric field to generate a signal.
  • Both types of sensors are highly accurate and can provide the ECU with real-time information about the position of the vane.
  • The ECU uses this information to make the necessary adjustments to fuel delivery, ensuring that the engine is operating at peak performance.

Symptoms Of Duramax Turbo Vanes Sticking

There are a few things to check if you suspect that the vanes on your Duramax turbocharger are stuck.

  • Inspect the turbocharger itself first. Indicators of stuck vanes include blades that remain in a single position. Elevated exhaust back pressure is another indicator.
  • To confirm this, remove the turbo intake hose and blow through it to check for increased resistance. Sticking vanes will cause a dramatic rise in back pressure.
  • Black smoke coming from the tailpipe is another sign of stuck turbo vanes. Because the turbo isn’t pressurizing the intake air enough, the engine is running richer than usual.
  • Checking the exhaust smoke when the engine is running at full throttle is a good way to see whether this is the case. The turbo vanes may be stuck if the exhaust is dark and dingy.

How To Unstick Duramax Turbo Vanes?

  • The first thing you need to do is remove the turbocharger from the engine.
  • Once the turbocharger is removed, disassemble it and inspect the turbine blades for damage.
  • If the blades are damaged, they will need to be replaced.
  • When the blades are replaced, reassemble the turbocharger and reinstall it on the engine.
  • Start the engine and allow it to idle for a few minutes to ensure the turbocharger is working properly.

How To Clean Turbo Vanes Duramax Without Removing?

  • Use a soft cloth to remove any dirt or debris from the turbo vane.
  • Be careful not to damage the vane while cleaning it.
  • Once the turbo vane is clean, you can inspect it for any damage.
  • If there is any damage, you will need to replace the vane.
  • To install the new vane, reverse the process.
    • First, remove the old vane from the turbocharger.
    • Next, install the new vane in its place.
    • Finally, reattach the turbocharger to the engine.

How Do I Free Up My Turbo Vanes?

If your turbo vanes are sticking, it can cause a loss of power and decreased fuel efficiency. Here are a few ways to free up your turbo vanes:

  • Use a commercial diesel injector cleaner. This will help clean out the turbocharger’s build-up and help the vanes move more freely.
  • Remove the turbocharger and clean it with a soft brush. Be careful not to damage the vanes.
  • Use compressed air to blow out any debris that may be stuck in the turbocharger.

If you’re still having trouble, you may need to replace the turbocharger.

Can You Move A Turbo Actuator By Hand?

Yes, you can move a turbo actuator by hand. This is because the turbo actuator is connected to the turbocharger via a shaft. By manually moving the actuator, you also turn the turbine shaft that rotates inside the turbocharger. This can help dislodge debris that may block the turbine from rotating properly.

Finally, Learn How To Replace Duramax Turbo Vane Sensor?

  1. Park your vehicle on a level surface and engage the emergency brake. Place a block of wood behind the back tires to prevent the car from rolling while you work.
  2. Raise the hood and disconnect the negative battery cable using a wrench.
  3. Locate the turbocharger vane position sensor on the driver’s side of the engine. The sensor is mounted on the turbocharger.
  4. Disconnect the electrical connector from the sensor by depressing the locking tab and pulling the connector off the sensor.
  5. Remove the sensor from the turbocharger using a wrench.
  6. Install the replacement sensor in the reverse order of removal. Reconnect the negative battery cable. Start the engine and check for proper operation.

Related Post:

Video Ref: 

  1. https://www.youtube.com/watch?v=B1jS8UsMXDc
  2. https://www.youtube.com/watch?v=Ja8LjVwJWHw

Leave a Comment