![]() Once the code is generated, it will signal the driver by flashing a warning about the specific zone. When one part starts to fail, the ECU stores a specific trouble code that lets the mechanic using the scanner know there is a problem. Since modern cars are controlled by the engine control unit (ECU), virtually all individual components are controlled by the ECU. Here are a few signs of a worn or broken VVT solenoid. To reduce the chance of these serious situations occurring, here are a few warning signs that may indicate a problem with the VVT solenoid. There are several other problems that can occur when the VVT solenoid wears out or breaks, which can lead to complete engine failure. If the VVT solenoid fails or is blocked, lack of proper lubrication can cause premature wear or complete failure of the timing chain and gear. When the VVT solenoid is activated, oil is directed to lubricate the variable valve timing chain and gear assembly. ![]() Some examples of this include when the vehicle is carrying extra weight, driving uphill, or when acceleration is accelerated by throttle control. This system is usually activated when the engine is heavily loaded. Each car manufacturer has their own unique VVT system, but most of them rely on a fully functional variable valve timing solenoid valve to control the flow of oil into the VVT system when it is turned on. ![]()
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