Boost stuck at 0.8 bar?!

alan cordeiro alancordeiro at
Mon Feb 6 06:38:27 EST 2006

most other failures would result in the boost gauge showing
some variation between idle and throttle positions other than

I would almost suspect your MAP (manifold input pressure)
sensor is not properly connected to the manifold...
pipe broke, large leak, etc.

On the outside chance, your MAP sensor is bad, but
this is highly unlikely based on all the list experience 
I have seen so far.


Is there any way you can add a simple boost gauge
----- Original Message ----- 
From: "Kneale Brownson" <kneale at>
To: "Kevin McCalla" <xamped at>; <200q20v at>
Sent: Monday, February 06, 2006 5:22 AM
Subject: Re: Boost stuck at 0.8 bar?!

> See Scott Mockry's information on low boost in a 20-valve engine:
> If you need parts to fix what his info helps you diagnose,  remember that
> he can supply any part.
> At 07:13 PM 2/5/2006 -0800, Kevin McCalla wrote:
> >My boost seems to be limited somehow.  As soon as i
> >feel the power come 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 fall
> >off.  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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