Modern engines are complex machines that rely on a range of systems to operate effectively, including the variable valve timing (VVT) unit. In a Volvo, the VVT unit helps to adjust the timing of the engine’s valves to improve performance and efficiency. However, when the VVT unit malfunctions, it can cause a range of issues that can affect the vehicle’s performance and reliability.
Before we dive into the signs of variable valve timing unit issues, it’s essential to understand what the VVT unit is and how it works. The VVT unit is a mechanism that adjusts the timing of the engine’s valves to optimize performance and fuel efficiency.
In a Volvo, the VVT unit is typically controlled by the engine control module (ECM) and uses a system of solenoids, oil pressure, and camshaft phasers to adjust valve timing.
There are several signs of variable valve timing unit issues that you should be aware of as a Volvo owner. These include:
If you’re experiencing any of the symptoms of VVT unit issues in your Volvo, it’s essential to diagnose the issue correctly to ensure that the necessary repairs are made. The first step in diagnosing VVT unit issues is to have the vehicle inspected by a qualified technician. They will perform a range of tests and inspections to determine the cause of the issue, including:
If your Volvo has VVT unit issues, the necessary repairs will depend on the severity of the issue. In some cases, it may be possible to repair a faulty VVT unit by replacing a single component, such as a solenoid or phaser. However, in most cases, the entire VVT unit will need to be replaced.
Replacing the VVT unit is a complex process that should only be performed by a qualified technician. The technician will need to remove the old unit and install a new one, ensuring that all components are correctly aligned and tightened to the manufacturer’s specifications. Additionally, the technician may need to perform a range of tests and calibrations to ensure that the new VVT unit is functioning correctly.
At Tanner Motors, we understand the frustration that comes with vehicle malfunctions, especially when it comes to variable valve timing unit failure. But have no fear – our team of experts is here to help.
As a trusted source for Volvo repairs, we are dedicated to providing our customers with the best service and information possible. Don’t entrust your beloved vehicle in the hands of just any mechanic. Let us be your go-to when it comes to all things Volvo. From routine maintenance to more serious repairs, we’re here to help keep you safely on the road.
* Volvo V90 Car image credit goes to: Bo Shen.