1.4 bar low boost and recent owner impressions

[Ned Ritchie]

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]
On Behalf Of Phil Rose
Sent: Tuesday, January 27, 2004 9:30 PM
To: auditude at cox.net
Cc: 200q20V mailing list
Subject: Re: 1.4 bar low boost and recent owner impressions

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


-- 

Phil Rose
Rochester, NY
mailto:pjrose at frontiernet.net
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