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    1. · Super Moderator
      1966 Crown Coupe, 2016 200 S AWD, 1962 Lark Daytona V8.
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      The P0440/P0441 aren't necessarily evaporative system leak codes. Your gas cap is probably fine,
      The 'general evap system failure' and 'incorrect purge flow' for me have usually been a failed NVLD switch.
      Mopar calls it a 'detector', but please continue with your diagnosis to confirm the problem.

      http://www.factorychryslerparts.com...Vacuum-Leak-Detection/4272075/04891525AB.html
      Am I correct that, if the gas cap was indeed loose, then tightened, the fuel tank had to reach full, then below 1/4 before clearing??

      Thanks
      Randy
       
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