it is like a high pitched whistle and as if some air coming from the same area
May 10, 2012 at 8:32 PM
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JACOBANDNICKOLAS
✓Experienced Mechanic
110,248 POSTS
I agree with CJ. It sounds like a vacuum you are hearing. See if you can determine where it is coming from. If you can't, you need to have the EVAP system fogged. They will force fog into the system and watch for it to come out.