Solenoid, Variable Valve Timing: Description
The Double Overhead Camshaft (DOHC) engine is equipped with variable valve timing on both intake and exhaust camshafts. A variable valve timing solenoid is used to direct engine oil to the camshaft mounted phasers. The solenoid receives pulse width modulation signal and the current is controlled within 0 ma to 1000 ma. The solenoid spool position is controllable at any position to control the supply of oil between the advance and retard ports of the phaser.
The V-6 engine is equipped with Variable Valve Timing (VVT). This system adjusts the timing of all four camshafts independently using solenoids and oil control valves to direct oil pressure into the camshaft phaser assemblies. The camshaft phaser assembly advances and/or retards camshaft timing to improve engine performance, mid-range torque, idle quality, fuel economy, and reduce emissions. The four VVT solenoids are located on the front of the cylinder head covers. The pintle should move freely within the solenoid body. Do not attempt to disassemble the solenoids, they are not serviceable. The solenoids are identical but should be installed in the same location as removed.