so its the differential??

if i can get my dealer to change a new differential, will the niose be there again?

 

No, don't get me wrong. I see it as normal operation of the vehicle. It's easier to hear this faint noise on some cars over others, but I don't see this as a problem. My ex-miata had that noise, too. I have had 3 diffs on that car: 1) the original I swapped out for 2) the 2nd one with LSD and without that noise (or I never paid attention to it) but unknown previous driving condition and eventually broke so I got 3) my 3rd one which had very very little mileage before I acquired it. I definitely had the noise in that 3rd diff and have used it on the stickiest tires I've ever had with most abuse and most mileage of all 3 diffs yet the last diff didn't break.

Let's get together for a drive and see how yours sounds like.

 

** Updated June 2. 2006 **

Fixed the noise by replacing 3 of the bolt from cat to exhaust...


the noise is no more..!! :_)

finally!~!!!

 

explain to me what u did.....bc i think i have the same problem..was it like a buzz rattling sound...

 

the noise you described is very common among the s2000.

 

imn pretty sure i have the same thing, light throttle cruising at 3.5-5k rpms in any gear its almost like a gargling or rumbling. it goes away when i give it more gas. ive had this for over 20k miles. I got the car with 25k on it. Diff fluid changes have shown nothing out of the ordinary. Ive just accpeted it it. If the tranny grenades, its upgrade time

 

by the way, it does not fix the noise at all by replacing 3 of the bolt from cat to exhaust...

so its very gay and weird.. however i test drove the 2004 and 2005.. they dont have this issue...

 

I have this same noise at ~3,000rpm except when "floating the throttle" as you described and to me sounded like an exhaust related sound. Just a certain speed gives the tone needed to create this sound. Maybe mines different. Nvidia exhaust (not loose) Maybe its the diff/clutch/idk I do know that ive driven the car and not heard it AT ALL...and other times its particularly loud...Operating temp perhaps?

 

pulled out the tranny today by the dealer and photo some pics

i saw alots alots of rush spot

i will post pics today and hopefully you guys can see how is the condition of my tranny and bearing...

not sure this will related to the noise issue...