re. URQ quirqiness

[Ben Swann]

Dennis,

 

I searched for months - nearly a year to sort out such flakyness.  Replaced
most everything - swapped and sorted.  Replaced all vac lines, injectors,
CIS, etc.

 

Anyway, I finally found the massive airleak - not obvious, untill I found
it.  Was under the clamp of the hose going into the turbo.  

 

Make sure you are not overlooking something like this.  You have the
symptoms!  Take all that turbo plumbing out and inspect it.

 

My UrQ now starts right away everytime and runs great.

 

Ben 

benswann at comcast.net

[Date: Tue, 4 Apr 2006 21:14:21 EDT

From: DGraber460 at aol.com

Subject: URQ quirqiness

To: urq at audifans.com

Cc: quattro at audifans.com

Message-ID: <2f8.23f1277.316473ed at aol.com>

Content-Type: text/plain; charset="US-ASCII"

 

My 83 is still being a bit of a puzzle. That's the nicest way I can put  it.

Symptoms: Frequency Valve operation comes and goes _very_  sporadically.

 

Actions so far:

New hall sender

New O2 sensor

new wire from ECU to FV

3 different FV

3 different (and verified) temp sensors

3 different flywheel sensors

3 different ECU's

Air temp sensor readings within spec

replaced fuel pump

 

For my money, that pretty much covers the bases. No amount of wire wiggling
(including the back of the fuse panel) will re-produce or stop the effect.

Where do I go from here?

TIA

 

Dennis

Denver]