I have a 2008 Hyundai Santa Fe GLS, 2.7 L V6, 2WD, 5-speed manual, 113,000 miles.
I recently replaced the Canister Purge Valve, because the solenoid was burned up and check engine light was on for that code. I noticed when I was replacing it that it must have been replaced once before because it was not the OEM part (my new one is the OEM part.)
The purge valve has not worked for probably 20,000 miles.
Problem: Since installation, while the engine is running, I hear the purge valve start opening in rapid succession (5 times a second) for about 2 minutes, then a 30 second break, and repeating this all the time.
I don't know how the purge system determines when to open, how often to open, or how long it should take to relieve 20k miles of vapor storage.... but it seems like removing the valve should have released the vapor.
I've unplugged the solenoid for now, because that constant pumping seems like it would just burn the coil up again! Am I wrong for thinking something is wrong with the evap system? Or is this normal behavior?