VGT Actuators

Variable geometry turbochargers (VGTs) are different from other turbos because they can adjust their A/R ratio to accommodate changing conditions, maximizing their performance and efficiency.  The key piece that allows this to happen is the VGT actuator, also known as VGT turbo actuator, that is designed to dynamically adjust the vanes within the turbocharger to control the amount of exhaust gases.  If there is a problem with the actuator within VGT turbos, it will need to be repaired or replaced to ensure the efficiency of the turbocharger.

HD Turbo is a diesel turbocharger remanufacturing company serving customers across the nation.  We provide remanufactured as well as parts including VGT actuators.  If you need a new actuator for your VGT, we offer remanufactured VGT actuators and repair services to fix your turbo actuator.

What is a VGT Actuator?

VGTs are turbochargers that have adjustable vanes to help control the amount of exhaust flowing towards the turbine wheel.  The VGT actuator is the part that controls this mechanism by moving the vanes or a sliding sleeve inside the turbocharger to increase or decrease the flow of exhaust gases that drive the turbine wheel, thereby increasing or decreasing the turbo boost.

The VGT actuator dynamically adjusts the vanes for the best airflow depending on the conditions of the engine, like RPM and load.  For example, vanes are closed to restrict exhaust airflow at low speeds and they are opened to allow more flow at higher RPMs. 

Symptoms of a Failing VGT Actuator

The VGT actuator must be functional to control the variable geometry mechanism within a VGT turbocharger.  It is important to recognize when the VGT actuator is failing so you can have the part repaired or replaced.

The following are common symptoms of a failing VGT actuator:

• Loss of power
• Turbo boost that is too high or too low
• Unusual noise
• Flashing engine management light or fault codes appearing
• Performance issues such as compromised engine power or reduced boost pressure due to the actuator being stuck
• Circuit issues such as issues with the CAN wires or a short to ground on the 12-volt power supply wire

About HD Turbo

HD Turbo is an independent, heavy-duty turbocharger remanufacturing company that sells rebuilt and remanufactured turbos and parts and offers turbocharger rebuild, calibration, and repair services.  Our desire for high quality, durable turbochargers made us the most advanced turbocharger remanufacturer in the Midwest with a state-of-the-art facility capable of balancing turbo components and whole rotating assemblies.  We use only top-of-the-line parts and follow strict quality controls to ensure that our remanufactured turbos and parts are durable with optimal performance.