Hello All,

2002 Audi 1.8T Quattro, Auto with Triptronic Transmission

New problem. Just back from having the engine serviced. Notice now
that while in drive (and only in drive - mind you I haven't tried it in
reverse yet) when the RPMs get to just over 2000 - there is a very
high-pitched "whirring" sound emitting from the engine (it is difficult
to pinpoint exactly where as this only happens when the car is in
drive). It seems as though it is emitting from the upper portion of
the engine but again it is very difficult to tell.

The "Whirring" noise increases in pitch and intensity as the RPMs
increase from 2000 to about 3500 (reducing as the gears shift and RPMs
decrease). If the car is in park or neutral this noise does not occur
even when the engine is brought to between 2000 and 3500 RPMs

I have run the car with the radio off - eliminating static interference
on the radio as one culprit. I have shut off all other electrical
components and the noise still persists

I just got the car back from major engine work due to sludge. I would
like to understand what this could be before I get "jammed" by the
dealer.

Thanks

 

Thought about it some more - the noise almost sounds like a vacuum
cleaner motor (but much higher pitch) when the vacuum hose is clogged
or blocked.

 

Thought about it some more - the noise almost sounds like a vacuum
cleaner motor (but much higher pitch) when the vacuum hose is clogged
or blocked.

 

Thought about it some more - the noise almost sounds like a vacuum
cleaner motor (but much higher pitch) when the vacuum hose is clogged
or blocked.

 

Thought about it some more - the noise almost sounds like a vacuum
cleaner motor (but much higher pitch) when the vacuum hose is clogged
or blocked.

 

The sound you describe could be due to low power steering fluid but I do not
know why it would be related to the transmission. Still worth checking.

CDN_THNK_TNK wrote:
> Thought about it some more - the noise almost sounds like a vacuum
> cleaner motor (but much higher pitch) when the vacuum hose is clogged
> or blocked.
>

 

The sound you describe could be due to low power steering fluid but I do not
know why it would be related to the transmission. Still worth checking.

CDN_THNK_TNK wrote:
> Thought about it some more - the noise almost sounds like a vacuum
> cleaner motor (but much higher pitch) when the vacuum hose is clogged
> or blocked.
>

 

The sound you describe could be due to low power steering fluid but I do not
know why it would be related to the transmission. Still worth checking.

CDN_THNK_TNK wrote:
> Thought about it some more - the noise almost sounds like a vacuum
> cleaner motor (but much higher pitch) when the vacuum hose is clogged
> or blocked.
>

 

The sound you describe could be due to low power steering fluid but I do not
know why it would be related to the transmission. Still worth checking.

CDN_THNK_TNK wrote:
> Thought about it some more - the noise almost sounds like a vacuum
> cleaner motor (but much higher pitch) when the vacuum hose is clogged
> or blocked.
>

 

Thanks Tony. I am also puzzled. Incidentally, MIL illuminated as I
was driving home last night. Performance (acceleration) seems "soft" -
noise is still occuring.