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Old 04-09-2021, 07:04 AM   #9
preppyr6
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Join Date: Dec 2019
Posts: 14
Dealing with the howling noise since last fall. Replaced the fuel filler vent valve...no change. Replaced the purge valve housing and valves (2 cylindrical valves in black plastic housing)...no change. Kind of annoying having to go in and out repeatedly swapping parts to track this down. No consistent CEL codes, but def affecting idle smoothness.
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