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Volvo cars are renowned in the market for their long life and incorporation of modern technologies in their models, such as the Variable Valve Timing (VVT) system. This technology controls the timing of the engine’s valves while the engine is running. With this change in timing, the engine can enhance its performance, and fuel consumption, and decrease the emission level.

However, VVT issues can occur, and this will lead to some prominent issues in the operation of your vehicle. Knowing the causes of such problems will help you take measures that could avoid such problems. Below are some of the causes of VVT issues in Volvo vehicles and how to prevent them.

What Makes The VVT In Volvo Become Faulty?

Oil Quality and Maintenance

The VVT uses engine oil to actuate the camshaft actuators and other related parts of the engine. Good quality oil helps in the proper operation of the system while bad quality oil or low levels of oil may lead to improper functioning of the system. As time passes by, oil can degrade and pick up contaminants such as dirt and debris that can plug the small passages in the VVT system.

Failure to change oil or use the wrong oil results in the formation of sludge. This sludge is capable of clogging the oil pathways which are essential in the functioning of the VVT system. Many of the VVT problems can be avoided by using the manufacturer’s recommended oil and changing it frequently.

Faulty VVT Solenoids

The VVT solenoids regulate the flow of oil to the camshaft actuators, and for this reason, they are critical for timing operations. When these solenoids are faulty, the timing adjustments cannot be made accurately, and this results in performance issues. Solenoids may be blocked with some materials or have electrical problems.

Some of the signs that may indicate faulty solenoids include: rough running, less acceleration, and higher fuel consumption. Solenoids may need to be replaced in order to fix the VVT system’s functionality that may have been affected.

Camshaft Sensors

The camshaft position sensors are responsible for detecting the position as well as the speed of the camshaft and relating this data to the VVT system. This information enables the system to determine the correct time at which the valves should be opened and closed. Without these sensors, the VVT system cannot make the right adjustments and the engine becomes uncontrollable and under-performs.

Camshaft sensors should be checked for problems because a faulty one may lead to a rough-running engine, power loss, or engine stall. Also, the check light may turn on to signal you if this sensor fails. Replacing the sensors generally solves these problems.

Wiring and Electrical Issues

The VVT system is among the few systems that rely on electrical signals for its functionality. These signals are sent through wires and if the wiring is damaged or connections are loose or terminals are corroded, the system fails to work properly. The wiring and the electrical connection should be checked often to rectify these problems before they grow out of proportion. Maintaining all electrical components in proper working order is crucial to the proper functioning of the VVT system.

Preventive Measures

Volvo owners should ensure that they do not neglect their car and make sure to follow the manufacturer’s recommended schedule and the correct oil should be used. It is recommended to inspect VVT solenoids, sensors, and wiring periodically to identify any issues that may occur. Maintenance and replacement of damaged parts are necessary for the proper functioning of the VVT system and the engine as a whole.

Come To The Most Reliable Auto Repair Shop In Santa Cruz

If you are looking for an auto Volvo VVT Solenoid workshop that is friendly, professional, and quick to respond when dealing with European cars in Santa Cruz, CA, then Hayes European is the place to be. Established in 1995, we have been helping drivers in the area and our technicians with ASE certification are capable of addressing any issue with your Volvo.

If you have realized that the VVT is experiencing problems or you would like to keep your Volvo in good condition, come to us. We will make sure that only the best hands handle your most prized possession. In addition to the residents of Santa Cruz, we also assist drivers from Aptos, Soquel, and Capitola, CA with Volvo repair and maintenance. Give us a call now at 831-269-5858 if you want to get your Volvo fixed.

* White Volvo SUV image credit goes to: Wirestock.

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