No Boost Condition - Only Getting 1.0 Bar

[PeterBergin at aol.com]

Forgot to mention there is another test described in the Bentley that will  
fire the injectors one at a time, you will hear the clicking on each one.   
Same test also tests a bunch of other stuff.  Easy to do if you use the  
Bentley.
Pete
 
 
In a message dated 11/5/2011 7:18:03 P.M. Central Daylight Time,  
PeterBergin at aol.com writes:

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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