Question about 2004 Honda Accord

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'05 Accord Throttle Body Noise

My '05 Accord 4cyl/auto w/41Kmi. car has developed a very pronounced "humming" type noise that I traced to the throttle body utilizing a stethescope;the noise is always present.Also there is a high pitched "wind" type noise that occurs when the car shifts from 2nd to 3rd gears @2000-2500rpm.Techs have ruled out bad alternator as someone suggested...possibly a tranny issue referred to a "harmonic distortion"...all baffled...I've already incurred over $500. in dealer repairs to no avail.They replaced the belt tensioner,serpentine belt and an exhaust gasket assuring me those were the problems...WRONG!Any ideas?My checking acct. and patience is about tapped out.Thanks!

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  • David Melrose May 11, 2010

    Since you mentioned the dealer, I assume they did a search for relevant "technical bulletins" on your symptoms and didn't find any useful ones. Has the throttle body been removed and inspected? A flexible object like an o-ring or a piece of tape flapping in the throat of a throttle body venturi can produce some weird moaning. I would think a complete inspection of the entire air intake tract would be in order.



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All i can suggest is if you spray some lube oil spray on the suspected areas and the noise stops momentarily then you've found your problem....

Posted on Apr 25, 2009


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