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Variable Valve Timing (VVT) Solenoid

Two aftermarket variable valve timing solenoids by Spectra Premium

The variable valve timing solenoid is a component of the variable valve timing system that manages the oil flow depending on the engine speed and load. A VVT solenoid in good working condition improves performance and fuel efficiency.

Each Spectra Premium VVT Solenoid is built from the ground up using precise manufacturing and quality control
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Other Manufacturer Terms for VVT Solenoid

Auto Manufacturers using VVT Solenoid

Pioneered by Nissan in the early 90s, Electronic Variable Valve Timing is now a near-universal feature on production cars in order to follow stricter emissions regulations.

The VVT technology may be commonplace, but many companies use different brand and patent names for the same system.

Many applications for the Spectra VVT Solenoid bear another original equipment name:

Manufacturer Acronym / Term Definition
Audi Valvelift
BMW VANOS Variable Nockenwellensteuerung
Fiat MultiAir
Ford Ti-VCT / VCT Twin Independent Variable Camshaft Timing / Variable Camshaft Timing
General Motors DCVCP Double Continuous Variable Cam Phasing
Honda, Acura VTEC, i-VTEC Variable Valve Timing and Lift Electronic Control
Hyundai, Kia, Volvo CVVT Continuous Variable Valve Timing
Hyundai, Kia VTVT Variable Timing Valve Train
Mazda S-VT Sequential Valve Timing
Mitsubishi MIVEC Mitsubishi Innovative Valve timing Electronic Control system
Nissan, Infiniti CVTCS / VVEL Continuous Variable Valve Timing Control / Nissan Variable Valve Event and Lift
Nissan N-VCT / VVL Nissan Variable Cam Timing / Nissan Ecology Oriented Variable Valve Lift and Timing
Porsche VarioCam
Toyota, Lexus VVT-i, VVTL-i Variable Valve Timing with intelligence
Subaru AVCS / AVLS Active Valve Control System
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Part Components

Major vvt solenoid components, plunger, coil, spool valve, oil pressure, oil drain

How Does a VVT Solenoid Work?

  • The VVT solenoid works with oil pressure, using directions from the ECU to alter rotation of the camshaft.
  • The solenoid alters the oil flow in the conduit leading to the camshaft phaser(s).
  • Conduits can be “instructed” to hasten or delay intake valve opening depending on which conduit will be called upon by the solenoid.
  • Variation of the intake pressure will be used by the powertrain computer to optimize fuel delivery to the combustion chambers.
A defective VVT solenoid leads to increased gear wear and drastic fuel consumption

Common VVT Solenoid Failure Symptoms

  • Rough Engine Idle
  • Check Engine Light
  • Misfiring engine under loads

More info

Common Causes of Failure

Contaminants in the engine oil are the main cause of failure of the VVT system. A failing unit will lead to rough engine idle and low fuel economy. Failure to replace a dying unit may cause engine gear drive and timing chain failure. Always watch for that “check engine” light

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Variable Valve Timing (VVT) Solenoid marketing material


Variable Valve Timing (VVT) Solenoid warranty