Fw: lost power, no boost..long

[Nicholas Lawrence]

This is a multi-part message in MIME format.
--
[ Picked text/plain from multipart/alternative ]

----- Original Message -----
From: Nick Lawrence
To: Nick Lawrence
Sent: Thursday, September 18, 2003 4:03 PM
Subject: Fw: lost power, no boost..long



----- Original Message -----
From: Nick Lawrence
To: audifans
Sent: Thursday, September 18, 2003 3:25 PM
Subject: RE: lost power, no boost..long


Car is 200 turbo,mac 14, 2 knock sensor, and "Charlie spring"
On another car set up the same I once experienced a code, (defective closed=
 throttle position switch), that reduced boost, but it still would give som=
e boost.

Are there any ECU controls that won't allow any boost at all, I can only ge=
t .8~.9 on the dash gauge?

Has anyone experienced a waste gate stuck open?
How much could this condition reduce boost?
Background...
I lost power while driving, I did see 1.8  a few times then much reduced po=
wer. No sudden cut off, no whoosh of hose coming off, car still starts, idl=
es, stalls with oil cap removed, drives ok except for reduced power.
Things I have investigated:
-check for leaks with a stethoscope
-removed and inspected air hoses,  I have blue silicone in place of MM hose=
 and a new lower hose
-the compressor side of the turbo turns with finger pressure
-checked timing, (crank,cam,dist)
-visually looked into catalytic converter, intact, no rattles
-remove waste gate cap and inspect diaphragm
-swapped fuel pump relay
Any more ideas are appreciated.
Nick
--