What can happen when a VVT system fails?
Interference is often associated with failed timing belts, tensioners, and water pumps, but VVT actuators may also fail with catastrophic consequences. When a VVT system code is exhibited, it is critical that the problem is addressed and rectified as quickly as possible.
How is the variable valve timing ( VVT-i ) implemented?
Like VVT-i, the variable valve timing is implemented by shifting the phase angle of the whole camshaft forward or reverse by means of a hydraulic actuator attached to the end of the camshaft. The timing is calculated by the engine management system with engine speed, acceleration, going up hill or down hill etc. taking into consideration.
When to replace a variable valve solenoid ( VVT )?
Now that you know what all symptoms indicate variable valve timing solenoid failure, you must also know that it is imperative to replace a faulty VVT solenoid. Once you have diagnosed a problem in the variable valve timing solenoid, it is best that you either get it replace or do it yourself.
How does the oil control valve in a VVT work?
It is operated by engine oil pressure and a solenoid-operated oil control valve which is controlled by the engine’s ECU. Furthermore, it moves the camshaft ahead and advances the timing of the opening of the Inlet valves.
What causes a VVT failure on a Chrysler?
The following common failures have been documented for current Chrysler VVT systems: Dirty engine oil clogging the passageway from the solenoid to the VVT chain and gear. Dirty engine oil clogging the oil control solenoid.
What can cause a VVT to go bad?
If your oil is dirty, sludge can clog the screen on the solenoid, causing a failure. If the engine oil level is low, you will also experience problems with VVT operation.
Do you need to delete the VVT system?
If you want high performance from a bigger cam, you will need to delete the VVT system. (More on that in a second.) Engines with VVT will have a camshaft phaser actuator on the timing cover.
Are there any inactive valves in a VVT system?
Using individual valve control, intake and exhaust valves on the four inactive cylinders are closed. Even though there is some loss of energy through additional compression, none is lost by pumping air through those cylinders. The following common failures have been documented for current Chrysler VVT systems: