Loud hissing sound when pressing the clutch pedal

[Huw Powell]

Sounds like it might be the throwout bearing on its way out?

Andrew wrote:
> Hi folks,
> 
> Greetings from a returning old-timer of this list. I was an active member of
> an old q-list about 10 years ago but uns*bscribed when I had to part with my
> beloved 4kq. Now, I have a technical question not exactly about an Audi but
> still Audi-related.
> 
> My 1999 Passat 1.8 T, is in many ways similar to an A4 and perhaps some of
> the list gurus could help me out.
> 
> It first started with a clutch pedal not returning all the way up after
> being released. So, I had to push up it with the toe. The brakes beeding was
> long overdue anyway, so I bled the brakes and the clutch and the pedal now
> goes all the way up. However, there is now some loud hissing or whistling
> sound heard when I press on the clutch pedal. I would describe the sound to
> be similar to hissing of the worn-out belt. Except it clearly comes from the
> rear (not the front) of the engine. So, it cannot be a belt. The sounds
> starts to be heard as soon as I press the clutch pedal only slightly and
> gets louder when I press it all the way. IIRC, the hissing, although less
> loud, was there before the bleeding but now it is totally outrageous.
> 
> I suppose these may be a very well known symptom but having very little
> experience myself with this type of car, I am asking here for an advise. Any
> suggestions would be greatly appreciated.
> 
> Cheers,
> Andrew
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-- 
Huw Powell

http://www.humanspeakers.com/audi

http://www.humanthoughts.org/