No Boost Condition - Only Getting 1.0 Bar

[PeterBergin at aol.com]

Do the boost tester.  When my turbo bypass valve failed (twice over  240k) 
the car would kill at low speed while slowing down, you can test that with  
one of those hand brake bleeder/vacuum pumps.  Should pop open and closed  
while holding pressure in the vacuum line.  Check the vacuum line that  feeds 
it.  They get brittle from manifold heat and brake, may as well check  all 
the little vacuum lines under the hood and the plastic connectors.  I  
finally just replace all of them and had no further problems.  Also check  the 
rubber breather (or what ever it is called) behind the cylinder head.   You 
will find it.  Also there are a couple of O-rings on the dip stick that  
occasionally need replacing.
 
The boost test will make it obvious what is leaking, I would not put more  
the 15 lbs pressure on it.
 
Good Luck!
Pete
 
 
In a message dated 11/5/2011 7:09:21 P.M. Central Daylight Time,  
pl510er at clear.net writes:

Well, I  managed to pull the fault code today for 4411, which appears to
indicate  a
faulty fuel injector (or its circuit) for the No. 1 cylinder. Wonder if  one
bad injector
or its circuit makes ECU to keep the boost to 1.0  maximum?  Not so sure
about it.

Come to think of it, when I  still owned this car in early 2010, it stalled
on me a
couple of times  during a very light throttle or coasting.  That could be
caused  by
a faulty No. 1 cylinder injector, but I didn't have any problem with  turbo
boost then.
So, the next step is to make a home-made boost leak  tester.   Stay tuned.
Shin


Date: Mon, 31 Oct 2011  17:42:08 -0700
From: "Shin Hoshikawa" <pl510er at clear.net>
To:  <200q20v at audifans.com>
Subject: No Boost Condition - Only Getting 1.0  Bar
Message-ID:  <FHENJIPJAJAMOHDNMHOPCEBLCEAA.pl510er at clear.net>
Content-Type:  text/plain;    charset="us-ascii"

Mike:   Thanks  for your suggestion.  I've done that, but absolutely  no
change.

Adam:  I haven't tried to pull codes before, but  will do that this weekend.
I'm going to make a home-made LED lamps for  it.  Hope it works.

Thanks for the heads up.    Shin

> have a code chart? See SJM  autoteck if  not.
>
> Doc-
>
> 1991 20v Avant with tweaker turbo  and  suspension. Parked 5000 miles from
me
> in Hawaii, someone  come get this  beast and drive it before it returns to
> the   earth.

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