EVAP Purge Valve

EVAP Purge Valve:

The EVAP purge valve controls the flow of vapors from the EVAP system to the intake manifold. This normally closed valve is pulse width modulated by the PCM in order to precisely control the flow of the fuel vapor to the engine. The valve will also be opened during some portions of the EVAP testing, allowing the engine vacuum to enter the EVAP system.