Mustang Cobra V8-281 4.6L DOHC VIN V MFI (1997)
Purge Flow Sensor: Description and Operation
PURPOSE
The Purge Flow Sensor (PFS) is used to:
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check purge solenoid function during the OBD II evaporative emissions test.
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monitor vapor flow through the purge solenoid.
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produce a change in sensor output for a given flow/no-flow condition.
The Powertrain Control Module (PCM) monitors PFS output voltage.
