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Question Asked: Trouble code P440. Just changed fuel pump assembly. Where is EVAP purge valve ?
January 09, 2012, 10:15 AM
I purchased a CarMD system and it says it is the purge control valve. Any other ideas ? I have also replaced the gas cap. I can drive the truck several days before the check engine lite comes on. Only seems to happen when the fuel level gets close to 1/4 tank.
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