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Old 08-14-2010, 10:29 AM   #1
boxsterblack
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Join Date: Aug 2010
Location: Wisconsin
Posts: 1
CEL codes PO447 & PO453

97 Boxster - Anyone have an idea of what to check for on these codes? I can't pass emissions test and am running out of time. So far it is not the gas cap.
I have seen some references on these codes saying the possibility of a bad Eval purge valve or vent valve. Does anyone know where these are?
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