What to know about the Variable Valve Timing (VVT) Solenoid:
Variable valve timing (VVT) aids to give smoother idling, better power delivery for everyday needs, improved fuel economy, and superior emissions control. In order to achieve all of these tasks, your VVT system needs a number of different parts including the variable valve timing solenoid. The VVT solenoid is in charge of changing the position of the camshafts in the engine. It works on oil pressure, and can either advance or retard cam position to give the right performance from the engine. Each camshaft is furnished with a VVT solenoid, which is capable of altering the supply of oil pressure to the camshaft depending on the speed and load of the engine. If the VVT solenoid is not working properly, the Check Engine light will come on and your engine will work noticeably worse.
Facts to Note:
The most common cause for VVT solenoid problems is dirty oil, which clogs the screen that sits between the solenoid and the VVT pressure switch.
If the solenoid doesn’t work, the VVT system will remain disengaged, which can adversely impact engine performance, fuel economy and more.
How to Fix:
The defective variable valve timing actuator (VVT) solenoid is located and identified
The variable valve timing actuator (VVT) solenoid is removed
The new variable valve timing actuator (VVT) solenoid is fixed
The engine is tested with a scanner for proper variable valve timing actuator (VVT) solenoid operation
The vehicle is road tested and checked for proper variable valve timing actuator (VVT) sensor operation
Because the solenoid is situated at the camshaft (near the VVT switch), it cannot be checked on a frequent basis. The only time it will be checked is if you are experiencing problems with the VVT system, or the Check Engine light illuminates and the computer provides a camshaft position or VVT system related code. If you do experience variable valve timing issues, have one of your expert mechanics diagnose and repair the issue.
Common symptoms indicating you may need to change the Variable Valve Timing (VVT) Solenoid:
Vehicle gets poor fuel economy
Engine performance is diminished
Check Engine light is on
Importance of this service:
If your vehicle is furnished with a variable valve timing system, it needs to work as designed for proper performance and fuel efficiency. If your vehicle’s VVT solenoid is defective, have it changed as soon as you to regain your lost performance.