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Evaporative Emission Control Canister > < EVAP System - Engine Sags On Acceleration|Page 2836
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Canister Purge Solenoid: Description and Operation

    The purge solenoid is energized by the logic module when engine temperature is below 145° F.  This prevents vacuum from reaching the charcoal
canister valve.  When engine temperature exceeds 145° F, the solenoid is de-energized and vacuum will flow to the canister purge valve and purge
vapors through the throttle body.

Evaporative Emission Control Canister > < EVAP System - Engine Sags On Acceleration|Page 2836