What is an Oil Control Valve (OCV) / VVT Solenoid (VVT Solenoid)? What are the signs that an oil control valve malfunction is? How to spot VVT Solenoid Failure ?….
Variable Valve Timing Solenoid (VVT) can be called camshaft regulator valve, oil control valve OCV or VANOS valve depending upon the vehicle manufacturer. No matter what their name may be, all VVT solenoids perform the same function: apply oil pressure and activate the valve timing adjustment mechanism. This mechanism is often referred to as an actuator or phaser and is located at the end the camshaft. The design of some vehicles, like the Honda VTEC might be different.
Variable valve timing solenoid regulates oil flow according to engine speed and load. A properly functioning VVT solenoid can improve performance and fuel efficiency. How can we tell if it is malfunctioning?
VVT Solenoid Problem Symptoms
VVT solenoid failures are quite common since most modern cars have Variable Valve Timing technology. Failing VVT solenoids can lead to many problems. Let’s look at some of the most common.
Engine Fault Light
The operation of the VVT solenoid(s) is monitored by the powertrain control module (PCM/ECM/ECU). The PCM will illuminate the check engine light if it detects an issue with the solenoid.
Idle Fluctuations
When your vehicle is idle, the VVT solenoid adjusts camshaft timing. The idle speed should be as smooth and predictable as possible. You can add oil to the VVT gears in the event that the system does not work properly. When VVT is running, engine RPM fluctuates. This symptom can lead to premature engine wear if it is not addressed.
Engine Performance Problems
A defective VVT solenoid could cause the valve timing to stop moving or delaying correctly. The engine won’t run properly, and performance will suffer, especially when it is accelerating.
Clicking the Engine to Make Noise
Failing VVT solenoids will not allow the engine to maintain the required oil pressure. This can cause the engine to make a clicking sound. Ford is one of the automakers that has technical service bulletins.
Fuel consumption has increased
The VVT’s function is to regulate the opening and closing of the valves to maximize fuel efficiency. A malfunction in this area can lead to wasted fuel and reduced performance. There is a possibility that the variable timing sensor or another part of the VVT systems has failed, resulting in increased fuel consumption.
Dirty Engine Oil
Dirty oil can lead to a cross-effect. This causes the VVT solenoid failure and is also a sign of a faulty VVT. Clean engine oil gives the VVT solenoid its best performance. The solenoid may clog if the oil’s properties become less desirable.
Can a Vehicle Be Driven With a Faulty VVT Solonoid?
While you technically can continue driving with a malfunctioning VVT solenoid in place, it could cause damage to other components such the VVT positioninger. You should address the issue as soon as you can.
