Craig,

Your timing belt sounds overtightened, which might manifest itself worst
when you rev it up, then take your foot OFF the gas, and as the rpm
falls you hear a new 'swoosh' noise that wasn't there before.

When the timing belt gets too tight, it 'sings' to itself, a bit like
when the wind makes suspension cables / rigging sing at the right
frequencies.

I'd insist an a new belt while they're in there, since your belt was
accustomed to working at the old tension, now they've increased it way
beyond spec. A new belt might have stretched a bit to accomodate your
installer's mistake, but your belt was already pre-stretched, and soon
to be post-stretched if you don't replace it.

'Curly'

P.S. Start looking for another dealer, if possible.

---------------------------




Craig Harris wrote:
> I have a 2002 Odyssey EX that is approaching 60,000 miles. When we
> started it up the day before yesterday in the garage we noticed what
> sounded like a whining sound coming from the engine compartment. The
> vehicle is kept in a heated garage (55 deg F). It is not extremely
> loud, but is most noticeable when the engine is revved and is
> decelerating to idle from about 1800 RPM.
>
> My fist thought was that it sounded like a power steering pump that is
> low on fluid. Fluid level was fine. Using a stethoscope could not
> hear any abnormal noise from pump.
>
> Could also not hear any abnormal noise from alternator or A/C
> compressor. Cycled compressor on and off with no change.
>
> It's difficult to actually pinpoint source of noise, but it sort of
> sounds to me like it is lower in the engine or possibly transmission.
> Noise level seems to be the same on either the driver or passenger
> side of engine.
>
> Engine oil and transmission fluid were both very clean and at correct
> levels.
>
> Entire vehicle has been serviced at all recommended intervals by the
> dealer. Dealer offered a 100K drivetrain warranty if all service was
> performed by them at recommended intervals.The timing belt tensioner
> TSB was done the first week of November.
>
> I called the dealer on Saturday and was instructed to bring it in.
> The van drove fine, but I can still hear the noise when in gear or in
> neutral. When I dropped it off, the people that checked it in did not
> think anything sounded abnormal. I asked them to have the mechanic do
> a side by side comparison with another Odyssey when they actually have
> the mechanics look at it during the week.
>
> A couple of questions I have is:
>
> 1.) Is it possible that something associated with the belt tensioner
> TSB work could be causing this noise?
>
> 2.) Is it possible that a bearing in the transmission could be on the
> verge of failing?
>
> I guess I'm just curious if anyone has had a similar experience.
>
> Thanks in advance.
>
> Craig Harris
> ccharris@earthlink.net