[Biturbos4] Biturbos4 Digest, Vol 74, Issue 3

Mon Feb 22 12:59:54 PST 2010

Mike,

Since your gasses are only going to build pressure the higher revs you are, I would say you are more likely to see it during the conditions you describe. Besides, 200k miles is a lot for any pcv system to stay clean, especially our crappy one. 

In my limited experience, blown turbos would smoke all the time. 

Still, could also be your valve seals are going bad. In fact, those will give you a puff of gray smoke during full load and boost because oil is blowing by the seals. 

Joel 
-----Original Message-----
From: biturbos4-request at www.audifans.com
Date: Mon, 22 Feb 2010 12:00:01 
To: <biturbos4 at www.audifans.com>
Subject: Biturbos4 Digest, Vol 74, Issue 3

Send Biturbos4 mailing list submissions to
	biturbos4 at www.audifans.com

To subscribe or unsubscribe via the World Wide Web, visit
	http://www.audifans.com/mailman/listinfo/biturbos4
or, via email, send a message with subject or body 'help' to
	biturbos4-request at www.audifans.com

You can reach the person managing the list at
	biturbos4-owner at www.audifans.com

When replying, please edit your Subject line so it is more specific
than "Re: Contents of Biturbos4 digest..."

Today's Topics:

   1. Unexpected and unwarranted ESP Activity - 2001.5 S4 (Al Smith)
   2. Re: smoke at high revs (Joel)
   3. Re: smoke at high revs (mike)
   4. Rear wheel bearings ... again (Chris Newbold)

----------------------------------------------------------------------

Message: 1
Date: Sun, 21 Feb 2010 16:51:50 -0500
From: Al Smith <awsm123 at gmail.com>
Subject: [Biturbos4] Unexpected and unwarranted ESP Activity - 2001.5
	S4
To: "biturbos4 at www.audifans.com" <biturbos4 at www.audifans.com>
Message-ID:
	<7eb7aa931002211351uc648a56q4a37dc1a23e856b8 at mail.gmail.com>
Content-Type: text/plain; charset=ISO-8859-1

                           I have had a few occasions in the last few months
where the ESP engages the brakes and decelerates the car at inappropriate
times.

                       .  One time in Maine passing a car on two lane road,
possibly down shifting to 4th gear at 50 mph or so, so not really getting on
it, and the brakes/esp light came on intermittently.  Horrible feeling being
out passing and to have the car slow down.  This was on dry straight road.
 Rest of my trip to Maine from RI, just passed cars in 6th gear with no fan
fare.

                       . last week was getting on 195 near Providence, and
was accelerating moderately   in 4th gear at around 55-60 mph, driving more
spirited than say a Camry driver, but not going all out either.  Road
conditions were perfect, dry sunny day.  Again, the ESP light came on and
off, along with the brakes.   *Not* experiencing going into limp mode after
this.

                       .  It is really disconcerting to have this unexpected
behavior.

                           Like probably most of you, I have been aggressive
off the line, only to have the ESP/traction control come on, and feeling
very silly as that Acura TL blows you away.  This is not the case with what
has been happening on the highway on occasion.

                        . I did get the speed sensor wet when I was stupidly
cleaning the engine, and it caused a problem with the reading on the
speedometer, but was dried off, and new o-ring was installed,   Could it
possibly be the speed sensor, but everything has been running excellent
accept for this very intermittent problem.

                         Any suggestion would be appreciated.

------------------------------

Message: 2
Date: Sun, 21 Feb 2010 22:12:02 +0000
From: "Joel" <quickaudi at gmail.com>
Subject: Re: [Biturbos4] smoke at high revs
To: biturbos4 at www.audifans.com
Message-ID:
	<88436735-1266790322-cardhu_decombobulator_blackberry.rim.net-1487544666- at bda2805.bisx.prod.on.blackberry>

Content-Type: text/plain

Mike,

Sent you a picture of the spider hose in a separate email. It is the hose that connects the pcv to both heads and the intake. Anyway, if it is clogged and it happens to be freezing cold in your neck of the woods, you will get smoke out the back end. 

Joel 

------------------------------

Message: 3
Date: Sun, 21 Feb 2010 18:48:51 -0800 (PST)
From: mike <mikemk40 at yahoo.com>
Subject: Re: [Biturbos4] smoke at high revs
To: biturbos4 at audifans.com
Message-ID: <846106.11045.qm at web112710.mail.gq1.yahoo.com>
Content-Type: text/plain; charset=utf-8

Cheers Joel, when you say smoke would that be at full throttle & >4.5k revs or all the time?

Mike

--- On Sun, 21/2/10, Joel <quickaudi at gmail.com> wrote:

> From: Joel <quickaudi at gmail.com>
> Subject: Re: [Biturbos4] smoke at high revs
> To: biturbos4 at www.audifans.com
> Date: Sunday, 21 February, 2010, 22:12
> Mike,
> 
> Sent you a picture of the spider hose in a separate email.
> It is the hose that connects the pcv to both heads and the
> intake. Anyway, if it is clogged and it happens to be
> freezing cold in your neck of the woods, you will get smoke
> out the back end. 
> 
> Joel 
> _______________________________________________
> Biturbos4 mailing list
> Biturbos4 at www.audifans.com
> http://www.audifans.com/mailman/listinfo/biturbos4
> 

------------------------------

Message: 4
Date: Mon, 22 Feb 2010 09:51:34 -0500
From: Chris Newbold <chris at newbold.org>
Subject: [Biturbos4] Rear wheel bearings ... again
To: Bi-Turbo Audi S4 Audi Fan Group <biturbos4 at audifans.com>
Message-ID:
	<46dd55721002220651g7c4a4aema69fa6bc2fc76f95 at mail.gmail.com>
Content-Type: text/plain; charset=ISO-8859-1

The rear wheel bearings on my 2001.5 S4 Avant have given out.... again. The
original set made it to about 75k miles under some very hard driving and
track time, and were replaced no-cost under the Audi extended warranty in
effect at the time. Fast forward to now, a little less than 30k miles later
(current reading is around 102k) and both bearings are making a horrific
racket again. I know these are a weak point on the S4 (as carry-overs from
the less-athletic A4), but 30k miles? And that's all been sedate commuting,
too. Sigh.

I'm also shopping for a new independent mechanic in the greater Boston area;
expertise with the S4 and some idea of what it takes to keep a car in shape
for the track are desired. I gave up on my former independent, who was
honest but couldn't figure out (and refused my advice) that the oil leak
from the valve covers was really the half-moon seals in the camshaft
adjusters that he didn't replace...

-Chris
2001.5 S4 Avant 6spd

------------------------------

_______________________________________________
Biturbos4 mailing list
Biturbos4 at www.audifans.com
http://www.audifans.com/mailman/listinfo/biturbos4

End of Biturbos4 Digest, Vol 74, Issue 3
****************************************