'04 coupe 6 speed, w/hfp, 9100 miles, 020556 last 6 of vin.

I posted a while back about a hissing noise under light to moderate acceleration between 1500 and 3000 rpm. I brought it in, the dealer ordered the heatshield mentioned in the service news article. It was installed today, no good.

The noise has turned into a screech to a scream at the same speeds, in 3rd to 6th gears. It most does it on smooth, newly paved roads, accelerating moderately in a straight ahead direction, if you rock the wheel, it lessens.

It isn't there all the time, and when it's been at the dealer twice now, it's been quiet for them.

On the way home it was quiet until about 15 miles of a 25 mile ride back to the house.

Anybody with a 6 speed, can you listen really closely while acclerating (ignoring the 2nd gear slight whine) and see if yours has a similar sound?

04 coupe w\out HFP 5200 miles
Although my cars been stored since October, So I can't road test it for you. I've never heard any transmision related whine. The Michelin Pilots sing a bit on flat road and The A piller has rattled. I've also experianced the Sulpher smell others have mentioned. What kind of tires come with the HFP package? Are you running snow tires? Could the sound be speed related and not gear related?. How about the belts? are they all tight? Are you running the heater when this happens? I have noticed a low whine running my heater while under load. I'd be interested to find out the culprit so I know what to attack if it developes on mine keep us updated.

noise sounds to me driveline related.
belt is non adjustable, heat/ac off, radio off. sunroof shade closed.

have winter sport dunlops on now (stock 6speed rims), had michelins (on hfp rims) on until about 2 weeks ago.
Same noise heard with either set.

Has steadily gotten louder.
Today it was screaming nearly constant even at 80 on highway.

Going to dealer tomorrow to have tech come on ride with me.

I am going to bring my digicam to record noise as it happens on way there in case it decides to play quiet on drive.

Went to dealer to have their trans tech go for a ride with me.
It did make the noise, and I described in full, when how loud it was on the ride vs other times I hear it..

He doesn't think it's the trans, but isn't sure exactly what it is.
It may have to involve Honda Engineering as it looks like it's going to be very hard to pin down.

I have nearly 10 minutes of mpeg video/audio I shot with my digital camera this morning, so I hope it'll help too.

It goes back again on the 27th for them to have for the day to try and figure it out.

The car is there, for how long I don't know.
They called today (tuesday) to say that they compared it with 2 lease returns and 1 new 6 speed. No noise from them.

They as of 3pm today, don't have a clue as to where the noise is coming from. The noise over Christmas (was driving all over) got louder and even my mom (senior) heard it and was asking "what's that noise I hear?"

At least I've been proven not to be a nutcase.

They are installing "electronic ears" and calling in Honda Engineering on it.

The loaner I've got (jeep liberty) is a pig on gas. 1/2 tank, 40 miles.

Does the noise go away when you engage the clutch?
Just curious if you may have a bad Though-out bearing:scratch:

I1:)

Noise is continuous now, at any rolling speed of over 20 mph.
Sometimes it's heard at slower speeds.
It increases (louder) with engine load to a point.

It is there with foot on clutch coasting, foot off clutch. It doesn't vary by engine rpm.

No noise in neutral with engine running or revving. Only moving.

Noise is reduced when you turn wheel 15 degrees off center or more. will come back once recentered.