A supply of oil is actually directed from the block. Through a banjo bolt, oil is pumped directly from the camshaft center to the phaser. The center vane assembly controls the direction that the inside unit turns towards the outside unit. And a banjo bolt attaches the inner component with the camshaft. In a phaser, a chain joins an outer component with a sprocket. The phasers are held in an advanced position with oil flowing into the advance side when in the default off position. Solving the Problem of Electric Motor Overheating: Causes, Prevention, and Troubleshootingĭamage to the parts and low oil pressure can slow the mechanical and hydraulic process once the VCT solenoids are energized. Multiple timing changes can be made by changing the PCM several times per second. This is controlled by the PCM via pulse width modulation and is referred to as PWM. It is essentially a spool valve controlled by an electronic circuit.īased on the spool valve’s position, oil pressure is allowed to retard camshaft timing or go into the phaser to advance. In this article, we are going to tell you everything that you should know before you decide on changing your VCT solenoid.Ī VCT solenoid allows oil pressure to enter the camshaft phaser, which controls the timing of the camshafts through the PCM. It increases the miles per gallon ratio over traditional vehicles that use fixed, or stationary, camshafts. Engine performance and efficiency can be improved by using this technology.īesides improving fuel economy, the variable camshaft timing can also reduce emissions.

Ford is the biggest manufacturer of VCT solenoid. VCT stands for variable camshaft timing that plays a major role in determining the oil pressure.

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