ES 300 V6-3.0L (3VZ-FE) (1992)
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Fuel Pressure Vacuum Switching Valve: Description and Operation
Fuel Pressure Control
PURPOSE
The fuel pressure up VSV is used to raise fuel pressure during hot restart conditions.
LOCATION
The VSV is mounted near the rear fuel rail.
OPERATION
During a hot restart, the ECM energizes the VSV which redirects the vacuum supply for the fuel pressure regulator to the atmosphere. When the
vacuum is vented, the fuel pressure regulator raises fuel pressure accordingly.
