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International Automotive Technicians Network
Re: Purge valves! Why are so many failing?
Posted to Technical Discussion Forum on 4/7/2021

I would venture a guess that the new way to manage flow is PWM vs open and close. So the valve is shuttling back and forth more often and the parts are not of sufficient quality to handle the duty cycle. We see so many pattern failures on the domestic fleet ve... Login to read more.