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2005 Sienna loud noise under hood at 70mph

4 messages,  Last post on Jul 26, 2009 at 9:35 PM

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#1 of 4 2005 Sienna loud noise under hood at 70mph by flyabus Dec 31, 2008 (6:09 pm)
Anyone else had this problem? On our 2005 Sienna, a loud noise comes from the driver's side front quadrant of the vehicle at 70mph. It sounds like it is coming from under the hood. The noise sounds like a leaves or something else light flapping around under the hood. All the trim pieces appear to be secure and I don't see anything loose. Any help or tips appreciated! Replies to this message: manmani (Jul 21, 2009 2:54 pm) flyabus (Jul 26, 2009 9:35 pm)
#2 of 4 Re: 2005 Sienna loud noise under hood at 70mph [flyabus] by manmani Jul 21, 2009 (2:54 pm)
Replying to: flyabus (Dec 31, 2008 6:09 pm) Any luck on this problem yet? I have a similar problem, but couldn't find a solution yet. Please reply to ustennhotmail.com Thanks.
#4 of 4 Re: 2005 Sienna loud noise under hood at 70mph [cycar] by flyabus Jul 26, 2009 (9:35 pm)
The vehicle came with 3 years of oil changes from the dealer. So, they performed all the oil changes during the period this problem started. However, these folks were so incompetent with other issues, it wouldn't surprise me at all if they operated on the discount franchise level.   Where exactly are these baffles, how many should there be, and what do they look like?   It needs to be windy to hear the noise. If I drive 80mph on a calm day, there is no noise. Throw a 10MPH wind in the mix, and the noise is pronounced at high speed. Driving low speed on a very windy day also produces the noise.

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