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Toyota Sienna Noises, Rattles, and Squeaks
I have a 2007 Sienna LE with 10,000 miles on it.
I have this hum noise (no clicking or rattling) just constant pretty loud noise when accelerating.
It only happens when I am going at lets say 40 mph (about 65 km/hr) and engine is at 2000 rpm and then I accelerate so that the rpm goes to about 2500.
The noise gets lauder as it goes to higher RPM.
But note that when I am at 10 mph and engine at 2500 rpm, noice is not there. Similarly when I am driving at 70 mph and just cruising (rpm at about 2500), noise is not there.
It really only happens when accellerating at 3rd and 4th gear. Radio or any music that can interfere is off and I think the noise is lauder on the passenger side.
I went to the dealer and he told me that every sienna has this and the noise is coming from air intake (engine needs much more air when accelerating and that's the noise). I understand that more air is needed when accelerating but how come it doesn't do that when i am accelerating at 10 mph? and it's pretty laud, to the point where it makes me crazy.
What are your thoughts? Do other 2006/2007 siennas have this?
I will take it to the dealer again but I have a feeling they will say the same thing and I would like to go in with some ideas, more educated
Thanks in advance.