VVT solenoid, inspection and cleaning: Inspection: Notes

Fig 1: Inspecting VVT Solenoid

Courtesy of VOLVO CARS OF NORTH AMERICA.

Remove VVT solenoid from camshaft cover.

Blow through center hole with compressed air.

Air should emerge from inner hole (1) nearest coil.

Fig 2: Inspecting VVT Solenoid While Is Connected

Courtesy of VOLVO CARS OF NORTH AMERICA.

Connect power to solenoid. Solenoid should click.

Blow through center hole with compressed air.

Air should emerge from outer hole (2).

If plunger is sticking or solenoid fails to operate electrically, the direction of flow will be unchanged from step 1.