2006 Explorer 4.0 vacuum leak | Ford Explorer Forums - Serious Explorations

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2006 Explorer 4.0 vacuum leak

Line82

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Joined
May 22, 2013
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Year, Model & Trim Level
2006 Explorer XLT 4x4
Hello all,

I have a 2006 Ford Explorer with a faint vacuum leak heard while engine is driving/under load. Sounds like it could be coming from under hood or floor board area. I can hear it with the windows open, too. Unfortunately at idle, it doesn't make the whistling noise. So it's hard to diagnose. Any ideas where this can be coming from? Check engine light is on. P0442 Small Evap Leak detected. Any vacuum lines known for rotting/going bad?

Thank you all for the info and advice.
 






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