1.4 bar low boost and recent owner impressions

auditude at cox.net auditude at cox.net
Wed Jan 28 10:13:48 EST 2004

[sorry if this is a duplicate message]

Hi Ned,

Thanks for the response.  I have yet to pressure/vacuum check the hose, and I'll probably end up replacing it just so I know it's new.

As for being pinched however, there is a tight spot in the metal bracket on the crossover pipe where it appears to be pinched more than it should be.  However, the hose is not binding in there nor is it too short, because I can pull it and move it from either end.  This came in handy to get it out of the way while I swapped the throttle sensor the other day.

Since the car is reasonably fun to drive with 1.4 bar, I am looking forward to 1.8. =)



"Ned Ritchie" <Q at IntendedAcceleration.com> wrote:
> Also check the hose between the bypass valve and the intake manifold.
> Audi even had a non documented fix if found recall for that hose.  The
> hose was too short and would get pinched in going over the bracket on
> the back of the intake manifold.  This in addition to burning through by
> the wastegate.
> Ned Ritchie
> -----Original Message-----
> From: 200q20v-bounces at audifans.com [mailto:200q20v-bounces at audifans.com]
> At 9:40 PM -0700 1/27/04, auditude at cox.net wrote:
> >  Well, the computer display decided to
> >work just as I was almost home tonight, so I took another short trip 
> >to see if it's still 1.4 bar
> >max.  It is.
> >
> >Since the boost gets up to 1.4 bar exactly, I'm thinking it's the 
> >ECU not assisting the WG
> >spring (instead of a leak or bad turbo).  So far I have replaced the 
> >WGFV (it was dead), the
> >BPV (it was leaking), and the IC hoses (they weren't Samco's).  I've 
> >check for fault codes
> >(none currently) and ran the output checks (everything's fine). 
> >I've disconnected the MFTS
> >and it didn't make a difference.
> >  the car
> >makes an audible bypass valve noise when I shift.
> Hmm, that's suspicious (i.e., that you have a "bypass valve noise"). 
> Was the leaking BPV replaced with a brand new, stock (Bosch-type) 
> valve? The several (new, functioning) Bosch valves I've had have not 
> made any distinctive noise when I shift (or any other time). A tear 
> in the valve bellows could be causing that noise. Or some other leak. 
> Have you checked to determine that the vac line to the BPV is intact?
> Phil

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