Avant stalling

Brandon Rogers brogers at terrix.com
Fri Mar 12 11:45:41 EST 2004

I'm still not totally clear which symptoms point to BPV failure vs ISV failure.

Any help appreciated.



  ----- Original Message ----- 
  From: Ben Swann 
  To: Brandon Rogers 
  Cc: TM ; 20020v at spymac.com ; 200q20v at audifans.com 
  Sent: Friday, March 12, 2004 9:40 AM
  Subject: RE: Avant stalling

  I have not had any problems with my stock bypass and am running 2.5 bar boost.

  I had the problem as you describe and it was remedied by repair/replace the Idle Stabilizer Valve.

  I sa r/r because I cleaned the original ISV once and the problem resolved for a time.  Cleaned it with throttle body cleaner.  Eventually I had to replace it, and the  problem has not recurred.

  You may want to verify operation of both, or at least BPV since this is the easier to test, before replacing anything.


  [Date: Thu, 11 Mar 2004 12:41:01 -0500
  From: "TM" <t44tq at mindspring.com>
  Subject: RE: Avant stalling
  To: "'Brandon Rogers'" <brogers at terrix.com>, <20020v at spymac.com>,
  <200q20v at audifans.com>
  Message-ID: <002d01c40790$06318450$0400a8c0 at TAKA1>
  Content-Type: text/plain; charset="US-ASCII"

  Typical bypass valve failure creates the exact symptoms you describe-
  I've had two stock valves fail on me- the engine stalls when you cut
  the throttle and coast to a stop. Replacement of the valve fixed it
  time. I'm running a Bailey, no problems since.


  -----Original Message-----
  From: Brandon Rogers [mailto:brogers at terrix.com] 
  Sent: Thursday, March 11, 2004 12:35 PM
  To: TM; 20020v at spymac.com; 200q20v at audifans.com
  Subject: Re: Avant stalling

  OK-why does it seem like the BPV, not the ISV?  Is it because the clutch
  is engaged and failing BPV causes compressor stall..then engine stall?
  And symptoms of a ISV failure would be pushing in the clutch and engine
  stalling instead of falling to idle?

  Thanks for the edumacatin'


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