re. Boost stuck at 0.8 bar?!
benswann at comcast.net
Mon Feb 6 09:40:15 EST 2006
Lemme guess - you have a leak somewhere in the manifold pressure line to the
ECU. I also guess you also have a 2.5 bar modified ECU, which would read
around .8 bar at normal atmospheric pressure, as the 2.5 bar P.T. voltage
output skew the digital readout.
So trace the connecton to the ECU inside and outside the car. Also check
that clar plastic pressure damper - they can crack.
Another thing that may be wrong is you have developed a leak in one of your
intake tract hoses and the system is miraculously compensating - but since
you did not indicate the car was nearly undriveable, I'll put odds on the
vaccum line to the ECU.
Let us know what you find.
[Date: Sun, 5 Feb 2006 19:13:53 -0800 (PST)
From: Kevin McCalla <xamped at yahoo.com>
Subject: Boost stuck at 0.8 bar?!
To: 200q20v at audifans.com
Message-ID: <20060206031353.56249.qmail at web36811.mail.mud.yahoo.com>
Content-Type: text/plain; charset=iso-8859-1
My boost seems to be limited somehow. As soon as I feel the power come
on...it drops off. The factory
boost gauge constantly reads 0.8bar, even if I'm at idle. I know the turbo
itself is fine because it will
build boost (power) abruptly and then immediatly falloff. I have a fault
code that I can't get rid of that
indicates my throttle switch is bad, but I replaced it last year, and the
code was there when the car ran
fine. Any ideas? Thanks--]
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