P0497 code on a V6 - Pontiac G8 Forum: G8 Forums - G8Board.com
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post #1 of 4 (permalink) Old 12-22-2018, 10:26 AM Thread Starter
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P0497 code on a V6

I have this low purge flow code setting soon after erasing it. Previously I had the code for excessive flow and replacing the purge valve near the engine (which tested bad) and it took care of that. I assume for this code I need to check on the canister itself and the vent valve? How are they accessed?
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post #2 of 4 (permalink) Old 12-22-2018, 10:57 AM
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In the service manual it reads an looks like all models were assembled the same way (in that area). So all the problems others have posted in the past, in getting to and or replacing any components back there, looks to be the same for you.
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post #3 of 4 (permalink) Old 12-22-2018, 11:22 AM Thread Starter
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Just started in on reading this post detailing the operation. https://www.g8board.com/forums/115-i...d-fix-diy.html I want to run some tests with the scan tool first to make sure this is the problem.
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post #4 of 4 (permalink) Old 12-22-2018, 02:45 PM Thread Starter
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Just realized I put on a gas cap from a Chevy Cruze to address the P0455 large evap emissions leak I had before. That code is gone but this cap might not be fully compatible and could be causing the current low purge flow code from different venting specs within the cap? Think I'll get a new original cap first.
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