Quote:
Originally Posted by cabmando
As I understand it, the ECM tells the solenoid valve to close periodically. So how do I go about verifying voltage at the solenoid without a diagnostic tool that can send a command to cycle the solenoid?
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Voltage may be there all the time but ECM creates ground when it's to close.
There is also the purge valve probably in the engine compartment. Solenoid on that can fritz. What size engine?