Miata Mailing List: June 1993, Message #62
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   From: tkacik@adtaz.sps.mot.com (Thomas Tkacik)
Subject: Re: re:High Pitch Hissing
   Date: Mon, 21 Jun 1993 10:50:35 -0400




>This may or may not be related, I also have a 91 BRG but with only 30K miles.
>I have recently noticed a high pitched whine or hiss from under the middle to
>middle/front of the car.  Especially when in a fast food line where the sound
>bounces back up.  I have noticed that when I very lightly rest my foot on the
>clutch, the sound goes away leading me to believe it may be the throw-out
>bearing.  Any comments/suggestions before I have what had better be warranty
>work done?

I think that this is the same sound that my Miata makes.  You can really
hear it well when parked in a garage.  Step on the cluch, and the noise
goes away.  It happens at any engine speed.  It is very quiet, and under
normal driving you cannot hear it over the road and engine noise.  But
drive by a wall, and then it becomes noticable.  I think my car has had this
noise from the day I bought it.  It's a '91 with 24K miles.

I never took it to a shop, so I do not know if there is anything wrong,
but I have been autocrossing it, and it seems to be doing just fine.

If anybody has ever taken their car in to be checked for this problem,
I would like to know what the result was.

Tom Tkacik
tkacik@adtaz.sps.mot.com