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Discussion Starter · #1 ·
2006 Dodge Durango 4.7

Anyone know what a Purge Valve Fraction is? It shows failed on the scanner.
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C'mon Dodge - NEW DAKOTA
2003 Dakota Club Cab Sport 4.7L
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Most purge valves are not on/off devices -- rather they can open part way, variable in nature. I'm not familiar with that error but it occurs to me that the valve may not be opening as much or as little as the controller commands it, and the controller has detected that. It's not a terribly expensive part to replace.
 

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I will replace it since its cheap...hopefully it will solve a p0300 random misfire that is random. Anything I learn I will update this post to help others.
 

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C'mon Dodge - NEW DAKOTA
2003 Dakota Club Cab Sport 4.7L
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502 Posts
It's an emissions related component. I doubt it'll affect your misfires.
 
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