Viper V10-488 8.0L (1992)
Canister Purge Solenoid: Description and Operation
EVAP Canister Location
FUNCTION
The EVAP Purge solenoid controls vacuum to the charcoal canister. The PCM regulates purge solenoid operation.
OPERATION
The PCM controls purge solenoid by switching the ground path on and off based on engine operating conditions. When solenoid is energized,
vacuum is prevented from reaching the charcoal canister. When solenoid is de-energized, vacuum is allowed to reach the charcoal canister.
CONDITIONS
The PCM will not allow vapors to be purged until the engine has reached a predetermined temperature and a time delay interval has elapsed. The
PCM, under certain idle conditions, energizes the solenoid to update fuel calibration.
